The ________ is the space between the dura mater and the bone of the vertebra
A) epidural space
B) arachnoid space
C) subarachnoid space
D) subdural space
Answer: A
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During pregnancy, smooth muscle cells in the myometrium increase in size and number.
Answer the following statement true (T) or false (F)
One of the reasons you might struggle to lift a heavy object with your arm fully extended is because
A. in extension, the proximity of Z discs to thick filaments restricts the sliding movement within sarcomeres. B. full extension results in decreased overlap between thick and thin filaments in the muscle. C. in that posture, some myosin heads overlap actin in the wrong orientation and tug actin in the wrong direction. D. motor neurons cannot release as much ACh in that posture.
Which of the following is not true of cardiac myocytes?
A. They are joined by intercalated discs. B. They have T tubules that admit extracellular calcium. C. Mitochondria make up about 2% of the cell volume. D. They are striated. E. They usually have one nucleus.
The left ventricle has a thicker wall than the right ventricle because the left ventricle has to pump blood against a higher pressure
Indicate whether the statement is true or false.