Autonomous Nervous System Basics

Question 1

What is the major component of the autonomous nervous system?

Answer 1

Motor function

Question 2

What are the two opposing systems of the autonomic motor system?

Answer 2

Sympathetic and parasympathetic

Question 3

Where do sympathetic pre-ganglionic neurons live?

Answer 3

In the spinal cord

Question 4

Where do sympathetic ganglion live?

Answer 4

Outside the CNS but close to the CNS (usually just outside spinal segment)

Question 5

What receptors exist in ganglions?

Answer 5

Nicotinic (ACh-activated)

Question 6

Is the pre- or post-ganglionic neuron usually longer in the sympathetic system?

Answer 6

Post-ganglionic

Question 7

Which system is the “fight or flight” system?

Answer 7

Sympathetic

Question 8

Dilated pupils, increase HR, open bronchi

Answer 8

Sympathetic system

Question 9

Vasoconstrict blood vessels to skin and visceral organs and vasodilate blood vessels to skeletal muscles

Answer 9

Sympathetic system

Question 10

Increase secretion rate of adrenal medulla (secretes adrenalin)

Answer 10

Sympathetic system

Question 11

What receptors allow for the vasodilation of one type of muscle while also vasoconstricting a different type of muscle via the same substance (norepinephrine)?

Answer 11

Alpha and beta norepinephrine receptors (and subgroups)

Question 12

Which system is often called the cranio-sacral system?

Answer 12

Parasympathetic system

Question 13

Where do parasympathetic pre-ganglionic neurons live?

Answer 13

Brainstem and sacral segments of spinal cord

Question 14

Which cranial nerves are the parasympathetic pre-ganglionic neurons in the brainstem assoc. with?

Answer 14

3, 7, 9, 10 (and sometimes 11)

Question 15

Which part of the hypothalamus controls parasympathetic innervation?

Answer 15

Rostral region

Question 16

Where are parasympathetic ganglion located?

Answer 16

Very close to or within the organ they intend to affect

Question 17

Are parasympathetic pre- or post-ganglionic neurons longer?

Answer 17

Pre-ganglionic neuron

Question 18

Which parasympathetic receptor works to transmit information?

Answer 18

Muscarinic (still ACh-activated)

Question 19

Contraction of pupil to accommodate for near vision

Answer 19

Parasympathetic system

Question 20

Decreased HR

Answer 20

Parasympathetic system

Question 21

Increased digestion and contraction of the bladder wall

Answer 21

Parasympathetic system

Question 22

What are actions of the parasympathetic system?

Answer 22

SLUDD (salivation, lacrimation, urination, digestion, defecation)

Question 23

Controls cardiac muscle, smooth muscle, and glands

Answer 23

Autonomic nervous system

Question 24

UMN of the autonomic nervous system lives where?

Answer 24

Hypothalamus and brain stem

Question 25

Preganglionic neurons for this half of the autonomic nervous system live in the lateral grey from T1-L4/5

Answer 25

Sympathetic

Question 26

Postganglionic synapse of the sympathetic system is achieved via which receptors?

Answer 26

Adrenergic

Question 27

Postganglionic synapse of the parasympathetic system is achieved via which receptors?

Answer 27

Muscarinic