Which is the function of the keratinocytes, a type of skin cell?
To serve as sensory receptors and transmitters for the sense of touch.
To anchor the epidermis to the dermis skin layer.
To provide skin pigmentation as protection from the sun's ultraviolet rays.
To produce a tough, fibrous structural protein for skin protection.
The Correct Answer is D
A. To serve as sensory receptors and transmitters for the sense of touch. Merkel cells, not keratinocytes, function as sensory receptors in the skin, particularly for touch perception.
B. To anchor the epidermis to the dermis skin layer. Hemidesmosomes and basement membrane proteins help anchor the epidermis to the dermis, not keratinocytes.
C. To provide skin pigmentation as protection from the sun's ultraviolet rays. Melanocytes, not keratinocytes, produce melanin, which provides skin pigmentation and protects against UV radiation.
D. To produce a tough, fibrous structural protein for skin protection. Keratinocytes are the primary cells of the epidermis and produce keratin, a strong, fibrous protein that provides structure, durability, and waterproofing to the skin. They also play a role in wound healing and immune defense.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B,D,C,A
Explanation
- Inspect head for trauma. Head injuries can be life-threatening, so the nurse must first assess for signs of skull fractures, concussions, or intracranial bleeding that could explain the headache.
- Perform a neurological exam. If head trauma is suspected, a neurological exam is essential to assess for altered mental status, coordination deficits, or signs of increased intracranial pressure.
- Evaluate range of motion of all joints. After ruling out life-threatening conditions, the nurse should assess for musculoskeletal injuries, fractures, or soft tissue damage from physical abuse.
- Provide a safety plan to prevent further violence. Once the client is medically stable, the nurse should provide resources, assess risk for further harm, and develop a safety plan to prevent future abuse.
Correct Answer is ["3.8"]
Explanation
3.8 mL per dose
Calculation:
- Convert 35 pounds to kilograms: 35÷2.2=15.9kg
- Determine the correct dosage:
- 15 to 23 kg → 45 mg BID
- Calculate the volume to administer: 45mg÷12mg/mL=3.75mL
- Round to the nearest tenth:
- 3.75 ≈ 3.8 mL
Thus, the nurse should administer 3.8 mL per dose.
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