The ability of lymphocytes to recognize an antigen is called
A) activation.
B) presentation.
C) immunocompetence.
D) immunopotential.
E) None of the answers are correct.
C) immunocompetence.
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The __________ nerve carries motor fibers for pupil constriction.
Fill in the blank(s) with the appropriate word(s).
Which center bears the primary responsibility for generating the respiratory rhythm, but is influenced by several other centers?
A. PRG B. DRG C. VRG D. SRG
The myocardium receives its blood supply from the coronary arteries.
a. true b. false
An EPSP:
A. is a direct result of the opening of ligand-gated channels permeable to both Na+ and K+ ions. B. is a direct result of the opening of voltage-gated channels permeable to both Na+ and K+ ions. C. stabilizes the membrane to remain at its resting potential. D. opens voltage-gated Ca2+ channels in the presynaptic membrane. E. occurs when voltage-gated Cl- channels open in a postsynaptic cell membrane.