Chapter 9: Problem 10
The two subtypes of cholinergic receptors are a. adrenergic and nicotinic. b. dopaminergic and muscarinic. c. nicotinic and muscarinic. d. nicotinic and dopaminergic.
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Imagine yourself at the starting block of the 100 -meter dash of the Olympics. The gun is about to go off in the biggest race of your life. What is the autonomic nervous system doing at this point? How are your organs responding?
A fall in cyclic AMP within the target cell occurs when norepinephrine binds to which adrenergic receptors? a. \(\alpha_{1}\) b. \(\alpha_{2}\) c. \(\beta_{1}\) d. \(\beta_{2}\)
When a visceral organ is denervated, a. it ceases to function. b. it becomes less sensitive to subsequent stimulation by neurotransmitters. c. it becomes hypersensitive to subsequent stimulation. d. no change occurs.
Distinguish between the different types of adrenergic receptors and state where these receptors are located in the body.
Atropine blocks parasympathetic nerve effects. It would therefore cause a. dilation of the pupils. b. decreased mucous secretion. c. decreased movements of the digestive tract. d. increased heart rate. e. all of these.
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