During contraction of a sarcomere,
a. the Z discs move farther apart
b. the A bands become thicker
c. the I bands become narrower
d. the thin filaments become shorter
e. events c and d occur
C
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Which statement regarding the azygos vein is not true?
A. The azygos is a continuation of the right ascending lumbar vein. B. The azygos drains some of the deoxygenated blood from below the level of the heart. C. The hemizygos drains into the azygos. D. The azygos drains into the IVC. E. All of the above statements are true.
The intervertebral discs that separate parts of the backbone are composed of ________.
Fill in the blank(s) with the appropriate word(s).
Pulmonary ventilation is another name for the mechanical act of ____________________
Fill in the blank(s) with correct word
Which cells are found in the gray matter of the cerebral cortex, have numerous dendrites, receive sensory input, and process information on a local level?
A. Astrocytes B. First-order motor neurons C. Purkinje cells D. Pyramidal cells E. Stellate cells