Which of the following will respond to a threshold stimulus with an all-or-none contraction?
A. A single muscle fiber
B. A whole muscle
C. Both a single muscle fiber and a single motor unit are correct.
D. A single muscle fiber, a single motor unit, and a whole muscle are all correct.
E. A single motor unit
Answer: C
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Which of the following is not correctly matched?
A) commissural fibers: interconnect the cerebral hemispheres B) arcuate fibers: short association fibers C) projection fibers: pass through the diencephalon D) association fibers: interconnect areas within a single cerebral hemisphere E) internal capsule: bands of association fibers
In the heart, the ________________________________________ layer is the serous layer that lines the fibrous pericardium
Fill in the blank(s) with correct word
During cellular respiration, decarboxylation occurs when
A. a carboxyl group is released from pyruvate. B. a carbon atom is removed from glucose. C. a carbon dioxide molecule is removed from the cytosol. D. a carbon atom is removed from and an oxygen atom is added to fructose. E. all carbon and oxygen atoms are released from a high-energy molecule.
After having the flu, a patient starts making anti-flu virus antibodies. This is an example of
A. artificial active immunity. B. natural active immunity. C. artificial passive immunity. D. natural passive immunity.