lecture 7

Question 1

The sympathetic division of the ANS is called the thoracolumbar division because

Answer 1

its preganglionic neurons’ cell bodies are located in the gray matter of the thoracic and lumbar segments of the spinal cord

Question 2

name an effect of the sympathetic division

Answer 2

increased heart rate

Question 3

Acetylcholine binds to

1. nicotinic receptors
2. muscarinic receptors
3. alpha receptors

Answer 3

1 and 2 are correct

Question 4

Release of acetylcholine by postganglionic cells will

Answer 4

increase digestion

Question 5

In the heart muscle itself, norepinephrine binds to

Answer 5

beta 1 receptors

Question 6

The cell bodies of sympathetic preganglionic neurons are located in the

Answer 6

spinal cord

Question 7

Cholinergic neurons release ____________ while adrenergic release _______________.

Answer 7

acetylcholine, norepinephrine

Question 8

A postganglionic neuron in the ANS

Answer 8

releases neurotransmitter that binds to the effector cell

Question 9

Acetylcholine is always released by _____ postganglionic neurons and is removed from the synaptic cleft at a _____ rate than norepinephrine.

Answer 9

parasympathetic, faster

Question 10

Cholinergic receptors include

Answer 10

nicotinic and muscarinic receptors

Question 11

Jennifer is at a stoplight and begins to accelerate into traffic when the light turns green. She stops suddenly as a truck runs the red light and is only a few inches away from her front bumper. What effect would you NOT expect to see in Jennifer’s body?

Answer 11

increased secretion of digestive juices

Question 12

what neurotransmitter is released at the adrenal gland by the preganglionic neuron in the sympathetic pathway?

Answer 12

acetylcholine

Question 13

In a parasympathetic division motor pathway, which neurotransmitter is released at the effector?

Answer 13

acetylcholine

Question 14

Cholinergic neurons release _____ and adrenergic neurons release _____.

Answer 14

ACh; NE

Question 15

Thoracolumbar is another name for which division of ANS?

Answer 15

sympathetic nervous system

Question 16

Which of the following types of adrenergic receptors are only found in brown adipose tissue where their activation stimulates heat production?

Answer 16

B3 adrenergic

Question 17

describe a common response of an autonomic effector during the “fight-or-flight” response?

Answer 17

pupils dilate

Question 18

Which neuron is most likely to be adrenergic?

Answer 18

sympathetic postganglionic

Question 19

Beta blockers are used to

Answer 19

prevent a rise in heart rate

Question 20

If a doctor administers atropine IV, a muscarinic antagonist, followed by a high dose of ACh, you still see an increase in heart rate. Where is the ACh acting?

Answer 20

nicotinic receptors of the postganglionic sympathetic neuron causing NE release to the heart, increasing heartrate