The exocrine portion of the pancreas is composed of which cells?
A. Acinar
B. Alpha
C. Beta
D. Islet
A. Acinar
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Which nervous system primarily controls and increases salivation?
A) submucosal nervous system B) parasympathetic nervous system C) enteric nervous system D) sympathetic nervous system
Receptive relaxation refers to relaxation of the
a. pharyngoesophageal sphincter during swallowing. b. pyloric sphincter when the duodenum is prepared to receive the chyme. c. external anal sphincter when the individual is receptive to the defecation reflex. d. stomach as it starts to fill, thereby allowing an increase in volume with very little increase in pressure. e. none of these answers.
Which of the following statements about the refractory period of a membrane is TRUE?
A. The absolute refractory period refers to the period of time during which another action potential cannot be initiated in that part of the membrane that is undergoing an action potential, no matter how great the strength of the stimulus. B. The relative refractory period refers to the period of time during which another action potential can be initiated in that part of the membrane that has just undergone an action potential if a stronger than normal stimulus is applied. C. The refractory period prevents the action potential from spreading back over the part of the membrane that just underwent an action potential. D. The refractory period places an upper limit on the frequency with which a nerve cell can conduct action potentials. E. All of the above choices are correct.
The pelvic pain line:
A) characterizes pelvic pain referral areas based on the inferior limit of peritoneum. B) is at the level of the first sacral segment. C) refers to the vertebral level at which the pain associated with parturition is most severe. D) is only relevant during childbirth. E) relates to the referred pain felt in the midsagittal plane after hysterectomy.