The beating of the cilia of the respiratory passages in the direction of the pharynx forms a ________.
Fill in the blank(s) with the appropriate word(s).
mucociliary escalator
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Lymph nodes occur in groups throughout the body except in the_____
Fill in the blank(s) with the appropriate word(s).
Which of these sensory pathways carries afferent impulses that DON'T produce perceptions?
spinothalamic pathway fasciculus gracilis spinocerebellar pathway posterior column pathway
The normal level at which a physiological variable is maintainied is known as its
A. stimulus.?B. control center.?C. negative feedback.?D. set point.?E. effector.
The most important baroreceptors involved in the moment-to-moment regulation of blood pressure are located in the:
a. medulla and glossopharyngeal nerve b. internal carotid and vagus nerve c. carotid sinus and aortic arch d. glossopharyngeal nerve and vagus nerve e. medulla and carotid sinus