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

Anatomy & Physiology

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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

Anatomy & Physiology

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.

Anatomy & Physiology

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.

Anatomy & Physiology

In the heart, the ________________________________________ layer is the serous layer that lines the fibrous pericardium

Fill in the blank(s) with correct word

Anatomy & Physiology