All of the following are functions of bones except
A) to protect certain internal organs.
B) to store inorganic salts.
C) to provide a set point for the control of blood pressure and body temperature.
D) to provide a source for red and white blood cells.
Ans: C) to provide a set point for the control of blood pressure and body temperature.
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Hormone secretion from the anterior pituitary gland is controlled
a. by hypophysiotropic hormones from the hypothalamus. b. directly by neural innervation of anterior pituitary cells. c. by negative-feedback action of target-tissue hormones. d. both (a) and (c) above. e. all of these answers.
Which nervous system division controls muscle contraction and secretion in the digestive system?
A. Afferent nervous system B. Sympathetic nervous system C. Enteric nervous system D. Somatic motor nervous system
Which statement is incorrect?
a. Salivation is entirely under neural control. b. Parasympathetic stimulation and sympathetic stimulation both increase salivary secretion. c. The acquired salivary reflex occurs upon stimulation of chemoreceptors and/or pressure receptors in the mouth. d. Parasympathetic stimulation produces a watery saliva rich in enzymes. e. The salivary center is located in the medulla.
At which point is the osmotic concentration of filtrate highest?
A) as it leaves the glomerular capsule B) as it enters the proximal convoluted tubule C) as it enters the descending limb of the nephron loop D) at the deepest point of the nephron loop between the descending and ascending limbs of the nephron loop E) as it blends with tubular fluid in the distal convoluted tubule