Which of the following combining forms means duct?
A. crypt/o
B. semin/o
C. orchi/o
D. vas/o
Answer: D
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A night-shift worker experiences extreme difficulty falling asleep due to being exposed to bright lights during both night and day. The unusual pattern of light exposure is disturbing their ________, which controls the release of the hormone ________.
A. circadian rhythm; melatonin B. metabolic rate; thyroxine C. circulatory system; dopamine D. limbic system; thymosin
The aortic baroreceptor senses stretching of the aorta. How will the nervous system respond?
A. Parasympathetic signals will be sent to decrease heart rate. B. Parasympathetic signals will be sent to increase heart rate. C. Sympathetic signals will be sent to increase heart rate. D. Sympathetic signals will be sent to decrease heart rate.
Which type of muscle tissue has cells that branch?
A. skeletal muscle B. smooth muscle C. cardiac muscle D. both skeletal and cardiac muscle E. both cardiac and smooth muscle
Aldosterone from the adrenal cortex causes sodium ions to be
A. conserved and potassium ions to be excreted. B. excreted and potassium ions to be conserved. C. conserved and potassium ions to be conserved. D. excreted and potassium ions to be excreted.