Which portion of a reflex arc is most likely to be located entirely within the central nervous system?
A. sensory neuron
B. motor neuron
C. effector cell
D. interneuron
E. receptor cell
D
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Swallowing is initiated when a(n) _____ is voluntarily forced by the tongue to the rear of the mouth and into the pharynx.
a. esophagus b. bolus c. larynx d. duodenum e. none of the above
Natural killer (NK) cells are a type of granular leukocyte.
Answer the following statement true (T) or false (F)
Arterial flow to the lower limb comes from the external iliac artery.
Answer the following statement true (T) or false (F)
What two plexuses are termed the enteric nervous system?
a. thoracic plexus and myenteric plexus b. submucosal plexus and myenteric plexus c. submucosal plexus and gastric plexus d. gastric plexus and enteric plexus e. enteric plexus and intestinal plexus