Which is not considered to be a change associated with aging in males?
A. Erectile dysfunction
B. Prostate enlargement
C. Decreased testosterone levels
D. Impotence
E. Termination of spermatogenesis
Answer: E
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The wall of the digestive tract contains different types of sensory receptors that:
a. respond to chemical changes b. respond to mechanical changes c. respond to temperature changes d. both (a) and (b) e. both (a) and (c)
The Frank-Starling law of the heart states that stroke volume is proportional to ________.
A. the end-diastolic volume B. the end-systolic volume C. the afterload D. contractility E. the heart rate
Due to dual innervation of the heart,
A. the autonomic nervous system and somatic motor system control heart function. B. heart rate can increase due to sympathetic regulation and voluntarily through cerebral activity. C. heart rate can decrease due to parasympathetic regulation and voluntarily through cerebral activity. D. heart rate can increase under sympathetic regulation or decrease under parasympathetic regulation, meeting the demands of the body.
The primary structure found within the medulla is the ________.
a)loop of Henle b)minor calyces c)portal system d)ureter