T cells or B cells that are capable of responding to a specific antigen by binding to it with antigen-specific receptors that appear on the lymphocyte's surface are considered ________
A) clones
B) complement
C) self-tolerant
D) immunocompetent
D
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A mouth ______________is used to better visualize the oral cavity
Fill in the blank(s) with correct word
Which of the following is NOT true of the relaxation of a muscle fiber?
A. Calcium release channels in the sarcoplasmic reticulum close. B. Ca2+ moves from the sarcoplasm to the sarcoplasmic reticulum. C. Calcium moves from troponin to tropomyosin. D. ATP is needed to fuel the calcium pumps.
The lymphatic system is made out of the following except the:
(a) lymph (b) lymph nodes (c) isolated nodules of lymphatic tissue, tonsils, thymus and spleen (d) liver
On the lateral surface of the wrist, at the base of the thumb, the readily palpated "bump" is the
A) head of the radius. B) head of metacarpal five. C) scaphoid bone. D) styloid process of the radius. E) lunate bone.