KA1- ANS

Question 1

1) ANS regulates… 9 This control is… 12

Answer 1

internal environment by controlling structures and organs
involuntary because it works automatically without requiring conscious thought

Question 2

2) ANS is controlled… 5

Answer 2

by medulla

Question 3

3) ANS consists of… 7

Answer 3

sympathetic and parasympathetic systems

Question 4

4) They are… , meaning they… in order to… 22

Answer 4

antagonistic, meaning they effect many of the same structures in opposite ways in order to maintain a stable internal environment

Question 5

5) Sympathetic system speeds… while… 16 Parasympathetic does… 6

Answer 5

up heart rate and breathing rate while slowing down peristalsis and intestinal secretions
the opposite of this

Question 6

6) Sino-atrial… controls… but… 12

Answer 6

autorhythmic node controls heart rate but is controlled by ANS

Question 7

7) Sympathetic system… , impulses… by… 12

Answer 7

speeds up heart rate, impulses leaving SAN by releasing noradrenaline

Question 8

8) Parasympathetic… , impulses… 12

Answer 8

slows down heart rate, impulses leaving SAN by releasing acetylcholine

Question 9

9) The sympathetic nervous system arouses… 18 After this… , … to… 15

Answer 9

the body in preparation for activity and expenditure during ‘fight or flight’ response
situation is over, the parasympathetic system takes over briefly to calm you down