The binding of ________ to a nicotinic receptor of a muscle fiber will ________ it
A) monoamine oxidase; inhibit
B) norepinephrine; excite
C) acetylcholine; inhibit
D) acetylcholine; excite
E) acetylcholinesterase; excite
D
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A connective tissue is composed of cells and a(n) __________ that consists of fibers and ground substance.
Fill in the blank(s) with the appropriate word(s).
What can cause the depolarization at synapses?
a. activation of ionotropic glutamate receptors b. activation of voltage gated Na+ channels c. activation of ligand gated K+ channels d. release of Na+ ions from pre?synaptic membrane
Isotopes have different numbers of ________; thus they also have different ________
A) protons; atomic numbers B) neutrons; atomic masses C) electrons; atomic numbers D) protons; atomic masses E) neutrons; atomic numbers
Which one of the following is continuous with the esophagus?
A) nasopharynx B) oropharynx C) linguopharynx D) laryngopharynx E) esophagopharynx