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Flashcards in nervous tissue Deck (26):
1

- MADE UP OF MULTIPOLAR CELLS WHICH ARE BASOPHILIC IN STAINING
- PRESENCE OF NERVE PROCESSES
- PRESENCE OF FISH-EYE NUCLEUS

nervous tissue

2

Layers of the Cerebellar Cortex

Outer molecular layer

Middle ganglionic layer

Inner granular layer

3

types of neuroglia

Ependymal cells
Protoplasmic astrocytes
Fibrous astrocytes
Oligodendroglia (perineuronal, interfascicular and perivascular)
Microglia

4

functions of neuroglia

Control environment within the CNS

Shuttle nutritive molecules from blood vessels to neurons

Remove waste products

Maintains the electrochemical surroundings of neurons

Metabolism of neurotransmitters

Guide developing neurons to correct locations in early development; in adult, provide structural support for nerve cells

5

Pseudounipolar
Fine Nissl bodies uniformly dispersed in cytoplasm
Presence of numerous satellite cells/amphicytes
Associated with myelinated fibers

Sensory

dorsal root ganglion cell

6

Multipolar
Intermediate sized Nissl bodies at periphery
Few satellite cells
Associated with unmyelinated nerve fibers
Motor

Autonomic ganglion

7

Types of Nerve Fibers according to ensheathement

Myelinated with neurolemma
Myelinated without neurolemma
Nonmyelinated with neurolemma
Nonmyelinated without neurolemma

8

dense material
Postsynaptic membrane only

Gray Type I (ACH)

9

dense material
Both pre and postsynaptic membrane

Gray Type II
( GABA)

10

synaptic cleft
30 nm wide

Gray Type I (ACH)

11

synaptic cleft
20 nm wide

Gray Type II
( GABA)

12

Synaptic vesicles
Round and large

Gray Type I (ACH)

13

Synaptic vesicles
Oval, flattened or pleomorphic

Gray Type II
( GABA)

14

Synaptic region
1-2 micrometer

Gray Type I (ACH)

15

Synaptic region
Less than 1 micrometer

Gray Type II
( GABA)

16

spinal cord protion
Basophilic
Contains nerve cell bodies and proximal processes
Protoplasmic astrocytes

inner gray

17

spinal cord portion
Non basophilic
Myelinated nerve fibers

Fibrous astrocytes and oligodendroglia

outer white

18

Layers of the Cerebellar Cortex

Outer molecular layer

Middle ganglionic layer

Inner granular layer

19

Layers of Cerebral Cortex

Molecular layer
External granular layer
External pyramidal layer
Internal granular layer
Internal pyramidal layer
Multiform cell layer

20

INJURY TO NEURONS (CNS)

Neurons unable to regenerate except at hippocampal region
Area of injury filled up with astrocytic scar
Astrocytes proliferate in a random fashion and do not form a pathway to guide axonal sprouts

21

INJURY TO NEURONS (PNS)

Axonal regeneration possible with compression injury and neuronal cell body survive
Schwann cells proliferate and form bands of Bungner to guide distally growing axonal sprouts

22

TYPES OF SYNAPSE

Axo-dendritic
Axosomatic
Axo-axonicA

23

Type of neurons according to length of processes

Golgi cell type I

Golgi cell type II

24

Axonal Transport by Microtubules

Anterograde or orthograde transport-
Retrograde transport-

25

Axonal Transport by Microtubules
from cell body to terminals; fast and slow transport; based on action of protein kinesin

Anterograde or orthograde transport-

26

Axonal Transport by Microtubules
from terminals to nerve cell body; driven by protein dynein; rabies virus and Clostridium tetani

Retrograde transport-

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