Hypersensitivity is only a B cell-mediated response
Indicate whether the statement is true or false
F
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If prosecretin, the inactive form of the hormone secretin, is produced improperly and cannot be converted to the active form as a result, how will this affect the intestine and the pancreas during digestion?
A. Cholecystokinin will not be released from the intestinal wall, so the acid of the chyme will not be neutralized. The duodenum will form peptic ulcers due to acid erosion. B. Acute pancreatitis will occur, as secretin will form within the pancreas and cause pancreatic juices to begin to digest pancreatic tissues. C. Enzyme-rich pancreatic juice will not be released from the pancreas as chyme is emptied into the duodenum. Proteins, fats, carbohydrates, and nucleic acids will not be digested. D. Alkaline pancreatic juice will not be released from the pancreas as chyme is emptied into the duodenum. Peptic ulcers may result.
Drugs called calcium channel blockers may be used to lower blood pressure by causing arteries to vasodilate. How do you suppose these drugs work?
A. They prevent calcium from entering cardiac muscle, thus slowing down the heart rate. B. They prevent calcium from entering the sarcoplasmic reticulum of smooth muscle. C. They stimulate the calcium pump in smooth muscle, thus removing calcium from the calmodulin. D. They prevent calcium from entering smooth muscle, thus allowing the muscle to relax. E. They prevent calcium from exiting the sarcoplasmic reticulum in skeletal muscle.
The ________ muscle is located on the front of the lower leg.
A. gastrocnemium B. latissimus dorsi C. tibialis anterior D. hamstring
The instrument used to record the electrical events of the heart is an ________
A) EOG B) EEG C) EMG D) ECG