Autonomic Nervous System

Question 1

Fight/flight response

Answer 1

Cardiac output increase
BLood diverted to skeletal muscle (Quads
Body temp rises so sweating must increase
Peripheral vasodilation to allow heat loss

Question 2

Describe ANS

Answer 2

Connection between CNS and peripheral organs
Involuntary
Sympathetic/parasympathetic
Opposing effects on a tissue
Two neurone system

Question 3

Length of parasympathetic/sympathetic
FIRST nerves

Answer 3

Parasympathetic - Long
Symapthetic - short

Question 4

What is a ganglia

Answer 4

Gap between two nerves

Close to spine for sympathetic
In target organ for parasympathetic

Question 5

Origins of parasympathetic/sympathetic nerves

Answer 5

Para - Cranial saccral
Symp - Thoracic lumbar

Question 6

Motor nerves vs para/sympathetic nerves

Answer 6

Motor nerves heavily myelinated
Para/sympathetic lightly myelinated

Question 7

Parasympathetic nerves

Answer 7

Come out of the face

Cranial nerve 3 Pupil
Cranial nerve 7 Submaxillary, sublingual, lacrimal glands
Cranial nerve 9 Parotid glands
Cranial nerve 10 - Heart kidneys bronchi GI tract colon
Sacral nerves - Remainder of GI tract, bladder, genitalia

Question 8

Chemical at terminal of second nerves

Answer 8

Acetylcholine - Parasympathetic
Noradrenaline - Sympathetic

One exception - Sympathetic - Sweat gland - Acetylcholine

Question 9

Where is nicotinic receptor

Answer 9

Ganglia

Question 10

ACetylcholine broken down by

Answer 10

Cholineesterase

Question 11

Noradrenaline metabolised by

Answer 11

Monoamine oxidase
Catechol-O-methyl transferrase

Question 12

Where is noradrenaline metabolised

Answer 12

In the neurone

Question 13

Nitric oxide

Answer 13

Erection