Nervous Tissue: structure and function

Question 1

define the CNS

Answer 1

Bain and spinal cord, contains relay neurone ( interneurons)

Question 2

define the PNS

Answer 2

Cranial nerves, Spinal nerves, Peripheral nerves.

contains: sensory neurons motor neurons.

Question 3

Describe the structure of grey matter in the CNS

Answer 3

peripheral in brain and in areas called the nuclei.

central in the spinal cord in a H or butterfly shape.

consists of nerve cell bodies, dendrites, axon terminals, non myelinated icons and neuroglia(support cells)

Question 4

Describe the structure of grey matter in the PNS

Question 5

Describe the structure of white matter in the CNS

Answer 5

central in the brain, peripheral in spinal cord.

consists of myelinated material

Question 6

Describe the structure of white matter in the PNS

Question 7

differentiate between

Question 8

what is the Pia mater

Answer 8

a layer containing a ventral fissure,

Question 9

location and function of a motor neurone

Answer 9

CNS to periphery
to send signals to effector tissues

large motor neurons
interneurons ( within the CNS)

Question 10

Sensory

Answer 10

periphery towards the CNS
to send environmental signals to integrative centre

pseudo unipolar neuron
bipolar neuron

Question 11

Integrative

Answer 11

CNS
collate all information

pyramidal cell(only CNS)
interneurons
purkinje cells( only in CNS )

Question 12

Axonic

Answer 12

retina ( some parts of the CNS)
acts as relays.