Which of the following is a normal skin change associated with aging?
Increased number of hair follicles
Decreased sebum production
Increased elasticity
Decreased epidermal permeability
The Correct Answer is B
A. The number of hair follicles does not increase with age. In fact, there is a gradual decrease in the number of hair follicles as one ages.
B. Decreased sebum production is a common skin change associated with aging. Sebum helps keep the skin moisturized, and as its production decreases with age, the skin tends to become drier.
C. Skin elasticity actually decreases with age due to the breakdown of collagen and elastin fibers, leading to wrinkles and sagging.
D. Epidermal permeability tends to increase with age, as the skin becomes thinner and more fragile, making it easier for substances to pass through.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. The superior and inferior vena cava carry deoxygenated blood from the body to the right atrium, not oxygenated blood to the left atrium.
B. The aorta carries oxygenated blood away from the left ventricle to the rest of the body but does not return it to the heart.
C. The pulmonary arteries transport deoxygenated blood from the right ventricle to the lungs for oxygenation, not the other way around.
D. The pulmonary veins are responsible for transporting oxygenated blood from the lungs to the left atrium, completing the pulmonary circulation.
Correct Answer is C
Explanation
A. A vesicle is involved in the transport of substances within or out of the cell via processes like endocytosis or exocytosis but does not directly permit ion passage across the membrane.
B. An enzyme catalyzes chemical reactions and is not directly involved in the transport of ions across the cell membrane.
C. A channel protein facilitates the passage of ions across the cell membrane, allowing specific ions to move in and out of the cell based on concentration gradients.
D. A lysosome is an organelle responsible for digesting and breaking down waste materials within the cell, not for ion transport across the membrane.
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