The figure illustrates the autonomic reflexes and the heart. What does "C" represent?
A. sympathetic nerve
B. increase in blood pressure detected by carotid baroreceptors
C. glossopharyngeal nerve
D. decrease in blood pressure detected by carotid baroreceptors
E. vagus nerve
B
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Impotence occurs when
A. sperm cell production decreases. B. an erection cannot be achieved or maintained. C. semen moves out of the urethra. D. the erectile tissues of the penis fill with blood. E. semen accumulates in the urethra.
A tissue that has a fluid matrix is
A. bone. B. blood. C. cartilage. D. adipose tissue. E. areolar tissue.
Explain how epinephrine can cause intestinal blood vessels to constrict and cause skeletal muscle blood vessels to dilate.
Fill in the blank(s) with the appropriate word(s).
Which type of cartilage is associated with the external ear?
A) elastic B) hyaline C) fibrocartilage D) areolar tissue