The cerebral arterial circle (circle of Willis) is comprised of the
A) basilar artery.
B) internal carotid artery.
C) Both A and B.
D) Neither A nor B.
Answer: C) Both A and B.
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The sympathetic division of the ANS generally
A) is called the "fight or flight" division. B) increases alertness. C) prepares the body to deal with emergencies. D) stimulates tissue metabolism. E) All of the answers are correct.
Which of the following is not seen in Addison's disease?
a. Marked Na+ loss in the urine b. Lowered blood glucose levels c. K+ retention d. Protein mobilization e. Poor response to stress
The ventral respiratory group sends impulses through an integrating center in the spinal cord, and then to the intercostal nerves, which stimulate contraction of the diaphragm.
Answer the following statement true (T) or false (F)
The inferior esophageal sphincter is also known as the
A. cardiac sphincter. B. pyloric sphincter. C. pharyngoesophageal sphincter. D. pharyngealgastric sphincter. E. esophageal hiatus.