The movement of molecules from an area of high concentration to an area of low concentration is known as
a. passive diffusion.
b. facilitated diffusion
c. active transport.
d. pinocytosis/phagocytosis.
.A
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The names of muscles often indicate the action of the muscle. What does the term levator mean?
A) The muscle flexes and rotates a region. B) The muscle is a fixator and stabilizes a bone or joint. C) The muscle elevates and/or adducts a region. D) The muscle functions as a synergist.
The ________ valve regulates the flow of blood between the right ventricle and the vessels leading to the lungs.
A. pulmonary B. mitral C. left atrioventricular D. aortic E. right atrioventricular
The pectoralis major and minor and subclavius muscles are part of the anterior thoracic region group of muscles.
Answer the following statement true (T) or false (F)
Cytotoxic T cells ________.
A) are the only T cells that can directly attack and kill other cells B) require the double recognition signal of I MHC plus II MHC on the target cell in order to function C) function mainly to stimulate the proliferation of other T cell populations D) self-destruct once the antigen has been neutralized