Neurons

Question 1

What are the role of dendrites?

Answer 1

Carry nerve impulses to cell body

Question 2

What is the soma?

Answer 2

Cell body

Question 3

What is the role of the nucleus?

Answer 3

Controls the centre of the cell

Question 4

What is the role of an axon?

Answer 4

Carries nerve impulses from cell body to axon terminal

Question 5

What is the insulation of a neuron called?

Answer 5

Myelin sheaths

Question 6

What is the role of the node of ravier?

Answer 6

Gaps that speed up action potential

Question 7

What are axon terminals?

Answer 7

Connects neurons to other neurons

Question 8

What is the order of neurons in the reflex arc process?

Answer 8

Sensory - relay - motor

Question 9

Describe the process of reflex arc from receptor to relay neuron

Answer 9

Sensation detected at sensory receptors
Electrical signal along dendrite- axon terminal

Question 10

Describe process of reflex arc from axon terminal to motor neuron.

Answer 10

Electrical signal reaches axon terminal
Converts into chemical signal
Crosses synaptic cleft detected my relay neuron
Reflex responses immediately passed to motor neuron.

Question 11

Describe reflex arc process from relay neuron to effector.

Answer 11

Reflex responses immediately passed from relay to motor neuron
Relay sends signal to cns
Signal reaches effector