검증된 단계별 안내
1:21
2:30
04:20Many chemical warfare agents, such as the poisonous gas sarin, block the enzyme acetylcholinesterase in the synaptic cleft. What effects will this poison have on muscle contraction? What effects will it have on the autonomic nervous system? What symptoms would you expect to see from this poison?
Which of the following actions would you expect when sympathetic neurons release norepinephrine onto β1 receptors?
a. Decreased sweat production
b. Constriction of blood vessels serving the digestive, urinary, and integumentary systems
c. Adjustment of the shape of the lens
d. Increase in the rate and force of contraction of the heart.
Differentiate between adrenergic and cholinergic receptors.
Mark each of the following as an effect of the sympathetic nervous system or the parasympathetic nervous system.
a. ________ Bronchodilation
b.________ Bronchoconstriction
c. ________ Constriction of pupil
d. ________ Vasoconstriction of blood vessels serving organs of digestive, urinary, and integumentary systems
e. ________ Increased metabolic rate
f. ________ Dilation of pupil
g.________ Contraction of smooth muscle of digestive tract
Explain what happens when sympathetic neurons stimulate the adrenal medulla. What purpose does this serve?
The poison curare (kyoo-RAH-ray) blocks the binding of acetylcholine to its receptors at the neuromuscular junction. What effects would you predict from such a poison? Can you think of any useful applications for it? Why might an overdose of it be lethal?
