Which is not characteristic of the endocrine system?
A. Effects: causes metabolic activity changes in target cells
B. Response time: slow reaction time = seconds to hours
C. Duration of response: long-lasting = minutes to weeks
D. Recovery time: rapid, immediate return to prestimulation level
E. Communication method: hormones in the bloodstream
D
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Which of the following is NOT a function of the kidneys?
A. Maintaining volume, pH, and composition of body fluids within normal ranges B. Removal of metabolic wastes C. Synthesis of plasma proteins D. Removal of excess chemicals
Which of the following is true about hormones?
a. are released from exocrine glands. b. interact with receptors at target-cell sites. c. are synthesized in the lymph nodes. d. interact with receptors in the blood. e. are all similar chemically.
The enteric plexus is found in the
A) submucosa layer. B) muscularis layer. C) serosa layer. D) both a and b. E) all of the above.
Which one of the following is NOT a component of semen?
A) sperm B) seminal fluid C) prostatic fluid D) bulbourethral fluid E) epididymal fluid