Which of the following is not a component of the overall ejaculatory response?
a. Arterioles supplying the penis dilate, causing erection
b. Smooth muscles of the prostate, ducts, and seminal vesicles contract, causing emission.
c. The sphincter at the neck of the bladder tightly closes.
d. Semen is expelled from the penis by rapid contractions of skeletal muscles at the base of the penis.
e. Rhythmical contractions and accompanying systemic responses are associated with a pleasant sensation known as orgasm.
A
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Inhibition of neural activity can result from
A) presynaptic events only. B) presynaptic events and postsynaptic events. C) postsynaptic events only.
The region of the pharynx at the tip of the arrow in the figure shown is the ________
A) laryngopharynx B) oropharynx C) nasopharynx
In a similar manner as the kidney, the lung demonstrates functional unity; that is, each unit is structurally and functionally identical. The basic physiological unit of the lung is the respiratory unit, which consists of:
A. nonrespiratory and respiratory bronchioles, and alveolar ducts and sacs B. respiratory bronchioles and alveolar ducts and sacs C. bronchi, nonrespiratory bronchioles, and respiratory bronchioles D. conducting airways and alveolar ducts and sacs
Another name for urination is
A. defecation. B. mastication. C. peristalsis. D. micturition.