Which of the following statements about larger lymphatics is incorrect?
A. They have thicker walls than veins.
B. They have valves.
C. The tunica media has smooth muscle and elastic fibers.
D. The tunica externa is relatively thin.
E. The endothelium of the tunica interna is similar to that of veins.
A. They have thicker walls than veins.
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What is the function of pancreatic polypeptide?
A. To inhibit somatostatin and digestive enzyme secretion B. To inhibit secretion of insulin and glucagon C. To promote somatostatin secretion D. To decrease the blood glucose level E. To increase the blood glucose level
Death following a head injury is MOST often the result of:
A) an epidural hematoma. B) trauma to the brain. C) airway compromise. D) spinal cord transection.
What is the reflexive movement of both eyes medially to view objects close to us?
A) emmetropia B) convergence C) accommodation D) inversion
Which of the following is known as "center-seeking" force?
A. momentum B. acceleration C. centrifugal force D. centripetal force