The heart lies in the __________ cavity about midline between the __________ anteriorly and the vertebrae posteriorly
Fill in the blank(s) with correct word
thoracic (chest); sternum
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Which is not correct regarding the perineum?
A. It includes the urogenital triangle and the anal triangle. B. It is circumscribed by the coccyx, ischial tuberosities, and pubic symphysis. C. It contains the urethral orifice in males. D. It contains the urethral and vaginal orifices in females. E. It is a diamond-shaped area between the thighs.
Why is the zone of overlap an important region of the sarcomere?
A) The zone of overlap is important because it is where actin filaments are anchored to and overlap nebulin proteins. B) The zone of overlap is important because it is where myosin filaments are anchored to and overlap titin proteins. C) The zone of overlap is important because it is where the myosin heads can interact with the thin filaments. D) The zone of overlap is important because it is where one sarcomere ends and another sarcomere begins. E) The zone of overlap is important because it is where the troponin proteins bind acetylcholine to generate an action potential that can cause muscle contraction to occur.
What are the immune defense cells of the CNS called?
a. astrocytes b. interneurons c. oligodendrocytes d. microglia e. ependymal cells
The hypothalamohypophysial tract carries
A. neurons from the hypothalamus to the posterior pituitary. B. neurohormones from the hypothalamus to the posterior pituitary. C. neurons from the hypothalamus to the anterior pituitary. D. neurohormones from the hypothalamus to the anterior pituitary. E. neurons from the anterior pituitary to posterior pituitary.