Reflexes

Question 0

3 types of neurone

Answer 0

Motor neurone, sensory “, relay “

Question 1

Reflexes

Answer 1

Involuntary and almost immediate reaction to a stimulus

Question 2

Motor neurone

Answer 2

Transmits impulses from the CNS to the effectors

Question 3

Sensory neurone

Answer 3

Transmits impulses from receptors/sense organs to the CNS

Question 4

Relay neurone

Answer 4

Within the CNS, transmits impulses from neurone to neurone

Question 5

Cell body

Answer 5

Part of a neurone which contains the nucleus

Question 6

Dendrites

Answer 6

Extensions which receive nerve impulses from other cells; the nerve impulses are then transmitted towards the cell body

Question 7

Axon

Answer 7

Carries nerve impulses to an effector organ

Question 8

Myelin sheath

Answer 8

Fatty sheath which insulates the axon(preventing shirt circuits of electrical impulses) and speeds up the conduction of nerve impulses

Question 9

Reflex arc

Answer 9

The pathway through the nervous system that a reflex takes

Question 10

Describe the spinal cord

Answer 10

• long, thin, tubular bundle of nerves
• extension of CNS from the brain
• enclosed by the vertebral column

Question 11

Dorsal root ganglion

Answer 11

Nodule on dorsal root containing cell bodies