Nerve gen

Question 1

What is a neuron?

Question 2

Describe neuron

Answer 2

All neurones have a similar structure. They have a cell body one longnerve fibre called the axon and several small nerve fibres calleddendrites.

Question 3

axon

Question 4

Dentries

Question 5

Synapse

Question 6

Myelin Sheath

Question 7

Neurilemma

Question 8

Nodes of Ranvier

Question 9

End Feet/Axon Terminals

Question 10

White matter is found?

Question 11

Grey Matter is found?

Question 12

Hormones associated with nerves

Answer 12

Acetylcholine and Noradrenaline

Question 13

Acetylcholine

Answer 13

facilitates the passage of an impulse, it is found in the synapse between a nerve and muscle fibre i.e. the neuro muscular junction

Question 14

Noradrenaline

Answer 14

sympathetic nerve endings produce noradrenaline which has a similar effect to adrenaline which speed up actions in response to stress

Question 15

What does CNS consist of

Answer 15

brain and spinal cord

Question 16

Peripheral Nervous System consist of?

Answer 16

12 pairs of cranial nerves arising from the brain
31 pairs of spinal nerves arising from the spinal cord

Question 17

Three types of nerves

Answer 17

Sensory nerve / neurone
Motor nerve / neurone
Mixed nerve /neurone

Question 18

Sensory nerve / neurone

Question 19

Motor nerve / neurone

Question 20

Mixed nerve /neurone