Chapter 16 - Animal Responses

Question 1

CNS

Answer 1

Brain and spinal chord and relay neurones

Question 2

PNS

Answer 2

sensory and motor neurones that connect the CNS to the rest of the body

Question 3

Parts of the PNS

Answer 3

somatic and autonomic nervous systems

Question 4

Somatic nervous system

Answer 4

Conscious control eg. Impulses to muscles

Question 5

Autonomic nervous system and the parts it’s split into

Answer 5

• subconscious control eg. Impulses to glands and cardiac muscle
  Sympathetic and parasympathetic

Question 6

Sympathetic

Answer 6

Fight or flight

Question 7

Parasympathetic

Answer 7

Rest and digest

Question 8

Function of cerebrum

Answer 8

Control voluntary action and conscious thought

Question 9

Cerebellum

Answer 9

Controls unconscious function

Question 10

Function of medulla oblongata

Answer 10

Autonomic control eg. Heart and breathing rate

Question 11

Function of hypothalamus

Answer 11

Regulatory centre of water balance and temperature

Question 12

Function of pituitary gland

Answer 12

Store and release hormones that’s regulate bodily functions

Question 13

Difference between a reflex arc and normal action potential

Answer 13

Reflex arc is faster as it misses out the conscious part of the brain

Question 14

Why are reflexes important

Answer 14

• involuntary; brain can focus on more complex responses, not
• not learnt; present at birth providing immediate protection
• fast; don’t involve many synapses