Biopsychology: structure and function of neurons

Question 1

What are the 3 types of neurons?

Answer 1

.sensory
.relay
.motor

Question 2

What is the structure of the sensory neuron?

Answer 2

.cell body (soma) on the side
.long dendrites
.long axons
.myelinated sheath

Question 3

What is the function of a sensory neuron?

Answer 3

Carry nerve impulses from the peripheral nervous system to the central nervous system

Question 4

What is the structure of the relay neuron?

Answer 4

.short dendrites
.short axons -so not myelinated

Question 5

What is the function of the relay neuron?

Answer 5

.allow the sensory and motor neurones to communicate with each other
.within the brain and spinal chord (CNS)

Question 6

What is the structure of a motor neuron?

Answer 6

.short dendrites
.long axons
.myelinated sheath

Question 7

What is the function of a motor neuron?

Answer 7

Conducts signals from the CNS to muscles or glands

Question 8

What is the purpose of a myelin sheath?

Answer 8

Insulates the axon, protects the cell and speeds up transmission of electrical impulses