Neurohisto

Question 1

3 types of neurons

Answer 1

1. bipolar - 1 axon and 1 dendrite
2. pseudounipolar - single process
3. multipolar - single axon, multi-dendrites

Question 2

name of collection of rough ER in axon

Answer 2

nisel substance

Question 3

feature of neuron nucleus

Answer 3

owl’s eye nucleus

Question 4

two substances that can be released on post-synaptic cleft and what happens

Answer 4

1. Na - excitation

2. Cl - inhibition

Question 5

2 types of matter and where

Answer 5

1. grey - perikarya (body), fibres, glia, vessels

2. white = fibers, glia, vessels

Question 6

4 different types of glia

Answer 6

1. ogliodendrites - form myelin sheaths
2. astrocytes - support and create blood brain barrier
3. ependyma - line ventricles and central canal
4. microglia - phagocyte cleanup

Question 7

breaks where no myelin is present

Answer 7

nodes of ranvier

Question 8

feature of ependyma

Answer 8

• cover choroid plexuses

- produce and circulate CSF

Question 9

where are cell bodies located in PNS

Answer 9

in ganglia

Question 10

3 different types of fibers in PNS

Answer 10

1. sensory gang. - pseudounipolar
2. autonomic gang. - multipolar - angular profiles
3. nerves - both myelinated and not - sinuous course

Question 11

cells that fibers sit in

Answer 11

schwann cells

Question 12

3 different nerve covering and what they surround

Answer 12

1. endoneurium - surrounds schwann cell and fiber
2. perineurium - surrounds bundle called fascicles
3. epineurium - surrounds whole group of fascicles