Many drugs used to treat migraine headaches contain caffeine. What mechanism does caffeine have that can help with migraine headaches?
What will be an ideal response?
Migraine headaches are caused by dilation of blood vessels in the brain. Caffeine is a drug that mimics the sympathetic nervous system. Since the sympathetic nervous system causes vasoconstriction in the brain, it will counteract the effects of migraine headaches.
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Curare blocks the action of ACh at receptor-channels. Therefore, it is considered a(n) ____
a. antagonist b. agonist c. protagonist d. synergist e. beta blocker
the protrusion of the eyeballs, exophthalmos, is caused by edema in the tissues behind the eye
a. true b. false
If a bioactive drug undergoes a significant first pass metabolism and is administrated orally, the drug is more likely:
a. Absorbed through the GI tract, delivered to the liver through the portal vein, and inactivated by liver enzymes b. Absorbed through the GI tract, delivered to the liver through the hepatic artery, and inactivated by liver enzymes c. Absorbed through the GI tract, delivered to the liver through the hepatic vein, and inactivated by liver enzymes d. Absorbed through the GI tract, delivered to the brain through the circle of Willis, and affecting the brain function e. Absorbed through the GI tract, stored in the gallbladder and released in the small intestines to help digest food
What regions of the hip bones articulate to form a symphysis?
A. Right and left pubic tubercles B. Ischial tuberosities C. Right and left Iliac fossa D. Right and left pubic bodies