Functions of the ANS

Question 1

The sympathetic system activates _____ receptors on _____ muscle, causing it to _____. The pupil _____.

Answer 1

1 - alpha1.
2 - radial.
3 - contract.
4 - dilates.

Question 2

The parasympathetic system activates _____ receptors on _____ muscle, causing it to _____. The pupil _____.

Answer 2

1 - muscarinic.
2 - sphincter.
3 - contract.
4 - constricts.

Question 3

The sympathetic system activates _____ receptors on the ciliary muscle, causing it to _____. The eye _____.

Answer 3

1 - beta2.
2 - relax.
3 - focuses far away.

Question 4

The parasympathetic system activates _____ receptors on the ciliary muscle, causing it to _____. The eye _____.

Answer 4

1 - muscarinic.
2 - contract.
3 - focuses close up.

Question 5

The sympathetic system activates _____ receptors on _____ cells, causing heart rate to _____.

Answer 5

1 - beta1.
2 - pacemaker.
3 - increase.

Question 6

The parasympathetic system activates _____ receptors on _____ cells, causing heart rate to _____.

Answer 6

1 - muscarinic.
2 - pacemaker.
3 - decreases.

Question 7

The sympathetic system activates _____ receptors on _____, causing contraction strength to _____.

Answer 7

1 - beta1.
2 - myocytes.
3 - increase.

Question 8

What effect does the parasympathetic system have on myocytes?

Answer 8

Very little.
Little effect on contraction strength.

Question 9

The sympathetic system activates _____ receptors on the smooth muscle of airways, causing it to _____ and _____ airways.

Answer 9

1 - beta2.
2 - relaxes.
3 - dilates.

Question 10

The parasympathetic system activates _____ receptors on the smooth muscle of airways, causing it to _____ and _____ airways.

Answer 10

1 - muscarinic.
2 - contract.
3 - constricts.

Question 11

The sympathetic system activates _____ receptors on the smooth muscle of vessels, causing it to _____ and _____ blood flow.

Answer 11

1 - alpha1.
2 - contract.
3 - decreases.

Question 12

The sympathetic system activates _____ receptors on the smooth muscle of vessels, causing it to _____ and _____ blood flow.

Answer 12

1 - beta2.
2 - relax.
3 - increases.

Question 13

What effect does the parasympathetic system have on blood vessels?

Answer 13

Usually no effect.

Question 14

What is activity in the blood vessels described as?

Answer 14

Tonic - small amounts of noradrenaline at all times (sympathetic).

Question 15

The sympathetic system activates _____ receptors that stimulates _____ in the salivary glands.

Answer 15

1 - beta.
2 - thick secretion that is rich in enzymes.

Question 16

The parasympathetic system activates _____ receptors that stimulates _____ in the salivary glands.

Answer 16

1 - muscarinic.
2 - watery secretion.

Question 17

What are the salivary glands an example of?

Answer 17

Dual innervation with non-antagonistic actions.

Question 18

The sympathetic system activates _____ receptors on the smooth muscle of the bladder, causing it to _____ and _____ pressure.

Answer 18

1 - beta2.
2 - relax.
3 - reduces.

Question 19

The parasympathetic system activates _____ receptors on the smooth muscle of the bladder, causing it to _____ and _____ pressure.

Answer 19

1 - muscarinic.
2 - contract.
3 - increases.

Question 20

The sympathetic system activates _____ receptors on the smooth muscle of the sphincter, causing it to _____ and urination _____.

Answer 20

1 - alpha1.
2 - contract.
3 - stops.

Question 21

The parasympathetic system activates _____ receptors on the smooth muscle of the bladder, causing it to _____ and urination _____.

Answer 21

1 - muscarinic.
2 - relax.
3 - occurs.

Question 22

The sympathetic system activates _____ receptors on the smooth muscle of the urethra, causing it to _____ and causes _____.

Answer 22

1 - alpha1.
2 - contract.
3 - ejaculation.

Question 23

The parasympathetic system activates _____ receptors on the smooth muscle of corpus cavernosum, causing it to _____ and causes _____.

Answer 23

1 - muscarinic.
2 - relax.
3 - erection.

Question 24

What is the reproductive tract an example of?

Answer 24

Dual innervation with complementary effects.

Question 25

Where are most autonomic responses integrated?

Answer 25

Mainly the hypothalamus, thalamus and brainstem.