Tarsal glands situated between the eyelashes release an oily secretion that lubricates the eye
Indicate whether the statement is true or false
TRUE
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Each gustatory cell extends ________ (called taste hairs) into the surrounding fluids through a narrow taste pore
A) microvilli B) villi C) papillae D) palpebra E) G proteins
Which layer of the arterial wall is responsible for vasoconstriction?
a) tunica interna b) tunica media c) tunica externa d) tunica albuginea e) tunica fascia
Which of the following is involved in the gradation of muscle contraction?
a. variation in the number of motor units activated b. variation in the frequency of action potentials initiated in each muscle fiber c. variation in the size of the action potentials initiated in each muscle fiber d. both (a) and (b) above. e. all of these answers.
Elevated blood pressure under resting conditions results in increased urinary output because
A. aldosterone levels increase. B. baroreceptors signal the hypothalamus to decrease ADH secretion. C. baroreceptors signal the hypothalamus to increase ADH secretion. D. elevated blood pressure stimulates renin secretion. E. the amount of angiotensin II formed is increased.