According to the sliding-filament mechanism of muscle contraction, the

a. A bands slide in closer between the I bands.
b. thin filaments slide inward toward the center of the A band.
c. Z lines slide in between the T tubules.
d. contractile proteins contract, thus shortening the sarcomere.
e. filaments slide into the lateral sacs of the sarcoplasmic reticulum.


B

Anatomy & Physiology

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The absolute and relative refractory periods of an action potential determine other parameters of action potentials such as causing unidirectional conduction and limiting their frequency. Describe what is happening during each of the refractory periods

Then use this information to describe how the different periods affect conduction and frequency. What will be an ideal response?

Anatomy & Physiology

Chemotherapy and Radiation can often lead to autoimmune deficiency.

a. true b. false

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the inside of the membrane becomes more negative than the resting potential

A. Depolarization B. Repolarization C. Hyperpolarization

Anatomy & Physiology

Misalignment of adjacent vertebrae can result in many pain symptoms and functional impairment because of compression of the ________ that exit between vertebrae.

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology