The sympathetic branch of the autonomic nervous system has its cells of origin in the brain stem as well as the spinal cord
Indicate whether the statement is true or false
F
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Why is it so difficult to localize sound with only one ear? How does having two ears help to localize sound?
What will be an ideal response?
Once an SA nodal cell reaches threshold, the depolarization phase occurs during which
A. potassium moves out through fast voltage-gated channels. B. potassium comes in through fast voltage-gated channels. C. calcium comes in through fast voltage-gated channels. D. calcium moves out through slow voltage-gated channels. E. sodium moves out through slow voltage-gated channels.
Chronic infections can lead to _____. Select one:
a. lymphadenopathy b. splenopathy c. lymphopathy d. all choices
Which vein drains blood from the left side of the thorax and esophagus into the left brachiocephalic vein?
A. Accessory hemiazygos vein B. Hemiazygos vein C. Internal thoracic vein D. Left azygos vein