What extrinsic eye muscle is controlled by the trochlear nerve?
A. Inferior oblique
B. Lateral rectus
C. Medial rectus
D. Superior oblique
Ans: D. Superior oblique
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Explain why the citric acid cycle is called a cycle
What will be an ideal response?
A neuron ________
A) can generate another action potential during the time Na+ permeability is changing and immediately following this change, but only if stimulus strength is increased B) will generate an action potential every time it is stimulated C) is absolutely refractory to stimulation during the time Na+ permeability is changing, and immediately following this change
In which phase of the cell cycle is DNA replicated?
A. G2 B. S C. Telophase D. Anaphase E. G1
Curare causes paralysis ________
A) by blocking the action potential in the nerve that serves a muscle B) by blocking receptors on the postsynaptic cell C) by blocking the release of neurotransmitter from the presynaptic cell D) by blocking the action potential directly in the postsynaptic cell