The stratum corneum just under the free-edge of a nail is the
Rationale:
The hyponychium is the stratum corneum located just under the free-edge of a nail. This layer serves as a protective barrier against pathogens and assists in the overall health of the nail structure, ensuring that the nail remains intact and functional.
B: Lunula This term refers to the crescent-shaped area at the base of the nail, not the stratum corneum beneath the free-edge, thus representing a different part of the nail anatomy.
C: Eponychium The eponychium is the tissue at the base of the nail plate, often confused with the cuticle, but does not refer to the area beneath the free-edge of the nail.
D: Nail root The nail root is the area where the nail originates beneath the skin, differing significantly from the hyponychium, which is specifically under the free-edge of the nail.
A radiographer needs to x-ray the urinary bladder. To image the bladder the camera must be focused on which of the following regions?
Rationale:
C: Hypogastric region. The urinary bladder is primarily located in the hypogastric region, which is situated below the umbilical region. Focusing the camera here ensures optimal imaging of the bladder area for accurate diagnosis.
A: Right hypochondriac region. This area primarily contains the liver and gallbladder, making it unsuitable for imaging the urinary bladder, which lies further down in the abdominal cavity.
B: Left lumbar region. This region is associated with the kidneys and portions of the intestines, not the bladder, which is located in the lower abdominal area, requiring focus elsewhere.
D: Umbilical region. While this region is central in the abdomen, the bladder is positioned lower, in the hypogastric region, rendering the umbilical area ineffective for proper bladder imaging.
Pigmentation of the skin is by the secretions of-
Rationale:
Melanocytes are responsible for the pigmentation of the skin. These specialized cells produce melanin, the pigment that gives skin its color and provides protection against ultraviolet radiation from the sun.
A: Monocytes are a type of white blood cell involved in immune response, not in producing skin pigment. Their primary role is to fight infections and aid in inflammation.
B: Neutrophils, another type of white blood cell, primarily respond to infections and do not contribute to skin pigmentation. Their function centers on phagocytosis and inflammatory responses.
D: Eosinophils are also white blood cells, mainly involved in combating parasitic infections and allergic reactions. They do not play a role in the pigmentation of the skin.
Vitamin D is synthesized by ....in the presence of sunlight
Rationale:
Skin synthesizes Vitamin D in the presence of sunlight. This process occurs when UV rays from the sun interact with a cholesterol derivative in the skin, converting it into Vitamin D3, which is then activated in the body.
B: Liver. While the liver plays a role in metabolizing Vitamin D, it does not synthesize it directly; that function occurs in the skin under sunlight exposure.
C: Kidney. The kidneys are involved in the conversion of Vitamin D to its active form, but they do not synthesize it; this occurs first in the skin.
D: Stomach. The stomach does not participate in Vitamin D synthesis; its primary role is digestion, with no connection to the production of vitamins from sunlight exposure.
To clean a wound, it is best to use:
Rationale:
C: Saline. Saline is the most effective choice for cleaning a wound as it is isotonic, gentle on tissues, and helps to flush out debris without causing irritation or damage to the healing process.
A: Hydrogen peroxide to bubble away the debris. While hydrogen peroxide may remove debris, its effervescence can harm healthy cells and delay healing due to its oxidative properties.
B: Tap water. Tap water might introduce contaminants or bacteria, which can increase the risk of infection and compromise the wound’s healing environment, making it less suitable for wound care.
D: It is best not to disturb a healing wound. While minimal disturbance is important, cleaning a wound appropriately is essential for preventing infection and promoting proper healing, thus requiring some intervention.
Bill Jones is a 24-year-old mechanic who sustained a 25% burn injury cleaning his engine with gasoline. Currently he is in his room with all the lights out. He has refused to see his girlfriend. He requires his mother to stay at the hospital and refuses to eat unless she feeds him. When asked any question, he replies negatively with vulgar language. On the basis of this data what is your nursing diagnosis of his problem?
Rationale:
B: Inability to cope with alteration in body image.
The context indicates that Bill is experiencing significant emotional distress following his burn injury, which has likely altered his perception of self. His refusal to see his girlfriend and dependence on his mother demonstrate a struggle to adapt to these changes, highlighting difficulties in managing his altered body image.
A: Regression related to pain.
While Bill exhibits some regressive behaviors, his refusal to eat and negative responses suggest deeper emotional issues linked to body image rather than solely a reaction to pain.
C: Fear due to hospitalization.
Although fear may contribute to his behavior, the primary issue revolves around his response to the burn injury and how it impacts his self-image and interpersonal relationships.
D: Depression related to inability to work.
Bill's current emotional state does not primarily stem from work-related concerns but from his struggle with the psychological impact of his injuries and changes to his body image.
Primary function of sweat glands is
Rationale:
A: Thermoregulation
Sweat glands primarily function in thermoregulation by releasing sweat, which cools the body through evaporation. This process is crucial for maintaining a stable internal temperature during physical activity or in hot environments.
B: Osmoregulation
Osmoregulation involves maintaining fluid balance and electrolyte concentrations, which is not the primary role of sweat glands. They mainly focus on cooling the body rather than regulating osmotic pressure.
C: Excretion
While sweat does contain waste products, the primary purpose of sweat glands is not excretion. Their main role is to regulate body temperature through the evaporation of sweat.
D: None of the above
Claiming none of the options accurately describe sweat glands overlooks their essential role in thermoregulation, which is a fundamental function clearly associated with these glands.
Which layer of the skin is made up of dead keratinized cells?
Rationale:
The epidermis is made up of dead keratinized cells. This outermost layer of skin serves as a protective barrier, composed primarily of keratinocytes that lose their moisture and become hardened as they rise to the surface.
B: Dermis This layer contains connective tissue, blood vessels, and hair follicles, serving as the foundation for the epidermis, but it does not consist of dead keratinized cells.
C: Hypodermis The hypodermis, or subcutaneous layer, consists mainly of fat and connective tissue, providing insulation and cushioning, without any keratinized cells present in its structure.
D: None of the above This option implies that no layer contains dead keratinized cells, which contradicts the established fact that the epidermis specifically fulfills this role in the skin.
The nurse is caring for a 32-year-old with circumferential full-thickness burns to the right arm and trunk. Which nursing intervention has the highest priority in the plan of care?
Rationale:
Assessing radial pulses several times a day is the highest priority intervention for this patient. It is crucial to monitor circulation and detect any signs of compartment syndrome that may arise from circumferential burns.
B: Enforce airborne infection control procedures. While infection control is important, it is not the immediate priority compared to monitoring circulation in burn patients.
C: Perform range-of-motion exercises several times per day. Although mobility is essential for recovery, ensuring adequate blood flow and preventing complications takes precedence in acute burn treatment.
D: Remove blisters from the burn area. Blister care is important but does not address the immediate life-threatening concerns related to compromised circulation seen in circumferential burns.
A patient who was burned at 10:00 AM reports a pre-burn weight of 154 lb (70 kg). The estimated total body surface area (TBSA) burned is 60%. Using the Parkland/Baxter formula, the nurse verifies that the total amount of intravenous lactated Ringer solution to be infused by 6:00 PM on the day of the burn is which of the following?
Rationale:
8,400 mL. The Parkland/Baxter formula estimates fluid resuscitation based on burn extent and patient weight. For 60% TBSA in a 154 lb patient, the calculation yields 8,400 mL to be infused within 24 hours.
A: 5,200 mL. This volume underestimates the necessary fluid replacement for a significant burn, failing to account for the extensive body surface area affected.
B: 7,470 mL. While closer, this amount still does not meet the calculated requirement based on the Parkland formula for a patient with 60% TBSA burned.
D: 16,800 mL. This excessively high volume exceeds the recommended resuscitation guidelines, which could pose serious risks of fluid overload and complications in burn management.
The receptors for touch present in mammalian skin are known as -
Rationale:
Touch receptors in mammalian skin are known as Meissner's corpuscles. These specialized nerve endings are highly sensitive to light touch and vibrations, primarily located in the dermal papillae, enhancing the tactile perception in areas like fingertips and palms.
A: Pacinian corpuscles Detect deep pressure and vibration rather than light touch, making them less relevant for the specific sensitivity to touch described in the question.
C: Krause's bulbs Primarily associated with cold sensation detection, they do not function as the main receptors for touch, thus failing to meet the question's criteria.
D: Corpuscles of Ruffini Primarily sense skin stretch and sustained pressure, which does not align with the primary function of receptors specifically for light touch, as asked in the question.
A client is admitted to the floor and has symptoms of nausea, vomiting, and diarrhea as well as immobility due to a fractured femur. Which of the following are risk factors for pressure ulcers in this client?
Rationale:
Dehydration. In the context of immobility and gastrointestinal symptoms, dehydration significantly heightens the risk for pressure ulcers by reducing skin turgor and impairing blood flow, ultimately compromising tissue integrity.
B: Hypokalemia. While hypokalemia can affect muscle function and overall health, it does not directly contribute to skin integrity or the development of pressure ulcers in the same manner as dehydration.
C: Hypernatremia. Elevated sodium levels may indicate fluid imbalance but do not inherently impact skin health or increase susceptibility to pressure ulcer formation in patients with immobility.
D: Fluid overload. Although fluid overload can lead to other complications, it does not specifically relate to the development of pressure ulcers, especially in a client who is already dehydrated and immobile.
Metachrosis is
Rationale:
Metachrosis is the capability of amphibians to change the intensity of their skin colour. This phenomenon allows these animals to adapt visually to their environment, enhancing camouflage and communication.
B: Capability of vertebrates to cast off stratum corneum pieces. This describes a process of shedding skin, not the dynamic colour-changing ability associated with metachrosis in amphibians.
C: Capability of thermoregulation. This refers to the ability to maintain body temperature, which is unrelated to the colour-changing characteristic unique to amphibians.
D: Change of a larva into adult. This describes metamorphosis, a different biological process that pertains to developmental stages rather than the colour adaptation seen in metachrosis.
Which statement is NOT true of the glands of the skin?
Rationale:
C: Stressful situations increase the secretions of apocrine glands. Apocrine glands are primarily stimulated by emotional factors; however, their activity doesn't necessarily correlate with stress, making this statement inaccurate regarding gland function.
A: The inner ear contains ceruminous glands. Ceruminous glands are indeed found in the ear canal, producing earwax, which serves a protective function against debris and microorganisms.
B: The sebum of sebaceous glands prevents drying of the skin. Sebum, produced by sebaceous glands, acts as a moisturizer for the skin, helping to maintain hydration and prevent dryness effectively.
D: An eccrine gland is a simple coiled tube with a duct to the skin surface. Eccrine glands are characterized by their coiled structure and direct duct connection to the epidermis, facilitating sweat secretion.
Leather for shoes is obtained from dermis because-
Rationale:
Leather for shoes is obtained from dermis because it is compact and elastic. This unique combination provides durability and flexibility, making it an ideal material for footwear, ensuring both comfort and longevity in use.
A: It is cellular. While the dermis contains cells, this characteristic does not specifically contribute to its suitability for shoe leather compared to its density and elasticity.
B: It becomes harder. Although dermis can harden through tanning, the primary attributes of compactness and elasticity are what truly enhance its functionality for footwear.
D: It is naturally cast off by ecdesis. The shedding process in ecdesis relates to other biological functions and does not pertain to the qualities needed for producing durable and flexible shoe leather.
What is the role of the integumentary system in homeostasis?
Rationale:
D: The integumentary system plays a multifaceted role in homeostasis, encompassing temperature regulation, fluid balance, and vitamin D synthesis, while also providing essential protection against infections and environmental threats.
A: The integumentary system helps to regulate body temperature, fluid balance, and blood pressure. While these functions are essential, they do not encompass the full range of the system's roles.
B: The integumentary system protects the body from infection and other harmful environmental factors. Although this is vital, it overlooks the system's contributions to temperature regulation and vitamin D production.
C: The integumentary system is involved in the production of vitamin D. While significant, this function alone does not capture the comprehensive responsibilities of the integumentary system in maintaining homeostasis.
A client has been bedridden for several days after major abdominal surgery. What action does the nurse delegate to the UAP for deep vein thrombosis (DVT) prevention?
Rationale:
A: Apply compression stockings. Applying compression stockings is a delegated task suitable for a UAP, as it directly aids in preventing DVT by enhancing venous return, which is crucial for bedridden patients.
B: Assist with ambulation. While ambulation is beneficial for DVT prevention, it requires more assessment and judgment than a UAP can provide, making it inappropriate for delegation.
C: Encourage coughing and deep breathing. This action necessitates patient education and assessment of respiratory function, which are responsibilities that should remain with the nurse, not the UAP.
D: Offer fluids frequently. Fluid management often involves monitoring intake and output, which requires nursing judgment to assess patient needs accurately, making it unsuitable for UAP delegation.
Which skin condition would be treated with laser surgery?
Rationale:
D: Fine wrinkle reduction or facial lesion removal. Laser surgery is specifically designed for cosmetic enhancements, effectively targeting fine wrinkles and removing facial lesions, thereby improving skin texture and appearance.
A: Preauricular lesion. This refers to a specific anatomical area where lesions may occur, but it does not necessarily indicate a treatment involving laser surgery, which is more cosmetic-focused.
B: Redundant soft tissue conditions. While these may require surgical intervention, they typically involve more invasive procedures rather than laser surgery, which is geared towards surface-level skin issues.
C: Obesity with subcutaneous fat accumulation. This condition is primarily addressed through weight loss techniques and surgical methods like liposuction, rather than laser treatments, which are unsuitable for fat reduction.
Substance secreted by sebaceous gland is called -
Rationale:
Substance secreted by sebaceous gland is called sebum. Sebum functions as an oily substance produced by sebaceous glands, providing moisture to skin and hair, preventing dryness, and offering protection against microbial infections.
A: Cerumin A waxy substance found in the ear canal, cerumin serves to trap debris and prevent infection, but it is not produced by sebaceous glands.
B: Sweat This fluid is produced by sweat glands primarily for thermoregulation and does not originate from sebaceous glands, which focus on lipid secretion instead.
C: Mucous Mucous is a viscous fluid secreted by mucous membranes to lubricate and protect surfaces, not related to the sebaceous glands’ function in skin oil production.
In mammals, the scent glands may be modified-
Rationale:
In mammals, the scent glands may be modified both sudorific glands and sebaceous glands. The context indicates that these glands can adapt to produce specific scents, serving various ecological and social functions in mammals, thereby enhancing communication and interaction within species.
A: Sudorific glands Adaptation in these glands primarily relates to thermoregulation and moisture, lacking a significant role in scent production compared to the modified glands.
B: Sebaceous glands While these glands contribute to skin lubrication, their primary function does not involve scent modification, making them less relevant in the context of scent gland adaptation.
You have just received change-of-shift report for the burn unit. Which client should you assess first?
Rationale:
B: A client who has just arrived from the emergency department with facial burns associated with a house fire. This client requires immediate assessment due to the potential for airway compromise and the severity of facial burns, which can lead to significant complications if not addressed promptly. Timely intervention is crucial for their safety and recovery.
A: A client with deep partial-thickness burns on both legs who is complaining of severe and continuous leg pain. While this client is experiencing significant pain, the potential airway issues in option B take precedence over pain management.
C: A client who has just been transferred from the post-anesthesia care unit (PACU) after having skin grafts applied to the anterior chest. Although this client is recovering from surgery, they are stable and not in immediate danger compared to the newly admitted client with facial burns.
D: A client admitted 3 weeks ago with full-thickness leg and buttock burns who has been waiting for 3 hours to receive discharge teaching. This client’s situation is stable and does not necessitate urgent assessment compared to the critical condition indicated by facial burns.
Which tissue is located in the region labelled '2'?
Rationale:
Areolar connective tissue is located in the region labelled '2'. This tissue is characterized by a loose arrangement of fibers and cells, providing support and flexibility, and is commonly found beneath epithelial layers, facilitating nutrient and waste exchange.
A: Reticular connective tissue exhibits a network structure primarily found in lymphoid organs, lacking the loose arrangement typical of areolar connective tissue, making it unsuitable for the specified area.
C: Stratified squamous epithelium consists of multiple layers of cells primarily serving protective functions, which does not align with the location's requirement for a connective tissue type like areolar.
D: Cartilage and blood represent specialized connective tissues. Cartilage provides structural support, while blood functions in transport; neither matches the loose, versatile characteristics of areolar connective tissue.
As charge nurse, you are observing a newly hired RN. Which action by the new RN requires your most immediate action?
Rationale:
Administration of tetracycline with a glass of milk to a client with cellulitis requires immediate action. Tetracycline's absorption is significantly impaired by calcium, leading to reduced effectiveness and potential worsening of the infection.
A: Obtaining an anaerobic culture of a superficial partial-thickness arm burn lacks urgency compared to medication administration, as this procedure does not directly impact the patient's immediate health status.
C: Debridement of a deep partial-thickness burn wound using wet-to-dry dressings is a standard practice and does not present an urgent concern that needs immediate intervention or oversight.
D: Teaching a newly admitted burn client about the use of pressure garments is valuable but not critical at the moment, as it does not address any immediate medical needs.
Study of mammary glands are called
Rationale:
Mastology. This term specifically refers to the study of mammary glands, encompassing their anatomy, physiology, and associated diseases. Understanding mastology is essential for diagnosing and treating conditions related to breast health, such as cancer and other disorders.
B: Stomatology focuses on the study of the mouth and its diseases, not related to mammary glands or breast health.
C: Hepatology investigates liver functions and diseases, which bears no relevance to the study of mammary glands.
D: Angiology is the study of blood vessels and lymphatic systems, unrelated to mammary gland research or disorders.
What is the function of melanin?
Rationale:
To protect the skin from UV radiation. Melanin serves as a natural defense mechanism, absorbing harmful ultraviolet rays that can lead to skin damage and increase the risk of skin cancers, thereby safeguarding overall skin health.
B: To give skin its color. While melanin contributes to skin pigmentation, its primary role encompasses protection against UV damage rather than solely providing color.
C: To regulate body temperature. Melanin does not play a significant role in thermoregulation; its main function is related to UV protection and pigmentation rather than temperature control.
D: All of the above. This option suggests multiple functions which misrepresents melanin's primary role. Its main purpose is UV protection, not encompassing all the listed functions simultaneously.
Merocrine sweat glands
Rationale:
Merocrine sweat glands secrete a watery fluid directly onto the surface of the skin. This secretion helps regulate body temperature and keeps the skin hydrated, highlighting their essential role in thermoregulation and overall skin health.
B: are compound alveolar glands. This description inaccurately categorizes merocrine sweat glands, which are tubular rather than compound alveolar, thus not fitting this gland type classification.
C: increase in number and activity with aging. Contrary to this statement, merocrine sweat gland function often declines with age, leading to reduced sweat production and temperature regulation efficiency.
D: produce organic secretions that are metabolized by bacteria to produce body odor. This characteristic pertains primarily to apocrine glands, not merocrine glands, which primarily secrete a clear, odorless fluid.
The tough 'horny' superficial layer of the epidermis is known as the
Rationale:
The tough 'horny' superficial layer of the epidermis is known as the stratum corneum. This outermost layer comprises dead keratinized cells that provide a protective barrier against environmental damage, pathogens, and water loss, thereby playing a crucial role in skin health and resilience.
B: stratum spinosum. This layer contains living keratinocytes and is primarily involved in providing strength and flexibility, but it is not the outermost protective layer.
C: stratum basale. This deepest layer is responsible for the generation of new skin cells but does not serve as the tough outer layer of the epidermis.
D: stratum granulosum. While this layer contributes to the process of keratinization, it is situated beneath the stratum corneum and does not represent the tough outermost layer.
The substance called sebum is commonly known as
Rationale:
Sebum is commonly known as skin oil. This oily substance, produced by sebaceous glands, plays a crucial role in maintaining skin hydration, protecting against bacteria, and ensuring overall skin health.
A: regular sweat. Regular sweat primarily consists of water and salts, serving mainly to cool the body, while sebum has distinct properties that nourish and protect the skin.
B: milk. Milk is a nutrient-rich liquid produced by mammals for feeding their young, unrelated to sebum's function or composition in skin biology.
D: odiferous sweat. Odiferous sweat refers to perspiration that emits a strong odor, typically due to bacteria, contrasting with sebum's role in moisturizing and protecting the skin without unpleasant scents.
Which of the following structures forms part of the integumentary system?
Rationale:
Epidermis. The epidermis is the outermost layer of skin, essential to the integumentary system, which serves to protect the body, regulate temperature, and provide sensory information, making it vital for overall health.
A: Myocardium. This muscle tissue forms the heart's wall and is integral to the circulatory system, not the integumentary system, which focuses on skin and related structures.
C: Lymphatic glands. These glands are part of the lymphatic system, playing a key role in immune response and fluid balance, rather than serving any function within the integumentary system.
D: Cartilage. This flexible connective tissue supports and cushions joints, but it does not belong to the integumentary system, which primarily involves skin and its associated components.