The function of the root hair plexus is to ________.
A) serve as a source for new epidermal cells for hair growth after the resting stage has passed
B) bind the hair root to the dermis
C) cause apocrine gland secretion into the hair follicle
D) allow the hair to assist in touch sensation
D) allow the hair to assist in touch sensation
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The stomach mucosa is thrown into folds known as villi
Indicate whether the statement is true or false
When the body's metabolic rate decreases:
A) the thyroid gland secretes thyroxine. B) oxygen demand increases accordingly. C) the kidneys excrete more sodium and water. D) thyroid-stimulating hormone secretion is reduced.
Which of the following is not a neurotransmitter?
A. Acetylcholine B. Lipofuscin C. Glutamate D. Serotonin E. Gamma-aminobutyric acid (GABA)
The term systole means
a. closure. b. conduction. c. contraction. d. opening. e. relaxation.