Path - Micro Of NS Tissue

Question 1

Nervous tissue - neurons

Answer 1

Structural and function unit of NS
Sensory, motor & Interneurons
Perikaryon (cell body) contains nucleus, nissl bodies & organelles

Question 2

Axon vs dendrites

Answer 2

Axon - transmits impulses away from cell body
Dendrites - transmits impulses toward cell body
Communicate through synapse

Question 3

Supporting cells of CNS

Answer 3

Astrocytes - physical and metabolic support for neurons
Oligodendrocytes - produce/maintain myelin sheath
Microglia - phagocytic
Ependymal cells - form lining of ventricles

Question 4

CNS

Answer 4

Susceptible to injury and protected by bony structures

Question 5

PNS

Answer 5

Less susceptible to injury and not protected by bony structures

Question 6

PNS nervous tissue

Answer 6

Axons
Ganglia
Supportive cells are neuroglia
- Schwann cells produce myelin
- satellite cells maintain controlled micro environment

Question 7

Location of grey and white matter in brain

Answer 7

Grey is outer
White in inner

Question 8

Cells /layers in cerebellum

Answer 8

Molecular layer
Prukinje cell layer
Granular layer
White matter

Question 9

Choroid plexus

Answer 9

Produces CSF
Located in lateral 3rd/4th ventricles

Question 10

Location of grey and white matter in spinal cord

Answer 10

White in outer
Grey in inner - dorsal and ventral horns

Question 11

Anatomy of spinal cord

Answer 11

Grey and white matter
Dorsal nerve roots
Meninges (pia)
Blood vessels

Question 12

Location of motor neurons in PNS

Answer 12

Cell bodies in CNS
Axons project into the PNS

Question 13

Location of sensory neurons in PNS

Answer 13

Cell bodies in dorsal root ganglia or sensory ganglia of cranial nerves
Axons project into CNS

Question 14

Layers in peripheral nerves

Answer 14

Endoneurium - surrounds each nerve fiber & Schwann cells
Perineurium - surrounds each nerve fascicle
Epineurium - surrounds a peripheral nerve