Which of the following is true of receptors?
A) The most complex, specific, and sensitive receptors are free nerve endings.
B) Each has a characteristic sensitivity.
C) They are evenly distributed over all surfaces of the body.
D) Each receptor is equally sensitive to several different types of stimuli.
E) None of the answers are correct.
B) Each has a characteristic sensitivity.
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The three hamstring muscles are ___________________, ___________________, and ___________________. ________________________________________
Fill in the blank(s) with the appropriate word(s).
Which of these is a flexible , gelatinous structure having embedded kinocilia and stereocilia?
A. Utricle B. Vestibule C. Ampullary cupula D. Ampullary crest
Explain the decreased fertility commonly found in males with anabolic steroids use.
A. Exogenous testosterone will trigger a decrease in GnRH. B. Positive feedback will occur as a result of exogenous testosterone, leading to reduced sperm production. C. LH and FSH levels will increase in response to the exogenous testosterone. D. The adrenal cortex will increase production of endogenous testosterone, therefore decreasing sperm production.
Which type of nephron is essential for water conservation and concentrated urine production?
A) juxtamedullary nephrons B) cortical nephrons C) medullary nephrons D) pyramidal nephrons E) pelvic nephrons