During swallowing the arytenoid cartilages move:
a. medially
b. laterally
c. superiorly
d. both a and c
Answer: a. medially
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The reflex that complements a withdrawal reflex by making compensatory adjustments on the opposite side of the body receiving the stimulus is the
A) tendon reflex. B) crossed extensor reflex. C) stretch reflex. D) flexor reflex. E) reciprocal reflex.
Skeletal muscle is composed of very hard working cells. Which organelles do you expect to find in abundance in skeletal muscle cell?
What will be an ideal response?
What electrolyte does the heart rely on most in order to keep a rhythmic beat?
a. potassium b. phosphorus c. magnesium d. iron e. sodium
Lymphocyte activation can occur in several ways. However, in all cases
A. helper T cells are activated first and they then stimulate other cells. B. antigen-presenting cells process the antigen and present it to the lymphocytes. C. antigens must be able to recognize the lymphocytes. D. lymphocytes must recognize an antigen. E. cytokines released by the antigen stimulate the lymphocyte response.