nervous tissue

Question 1

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

Answer 1

nervous tissue

Question 2

Layers of the Cerebellar Cortex

Answer 2

Outer molecular layer

Middle ganglionic layer

Inner granular layer

Question 3

types of neuroglia

Answer 3

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

Question 4

functions of neuroglia

Answer 4

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

Question 5

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

Sensory

Answer 5

dorsal root ganglion cell

Question 6

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

Answer 6

Autonomic ganglion

Question 7

Types of Nerve Fibers according to ensheathement

Answer 7

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

Question 8

dense material

Postsynaptic membrane only

Answer 8

Gray Type I (ACH)

Question 9

dense material

Both pre and postsynaptic membrane

Answer 9

Gray Type II

GABA

Question 10

synaptic cleft

30 nm wide

Answer 10

Gray Type I (ACH)

Question 11

synaptic cleft

20 nm wide

Answer 11

Gray Type II

GABA

Question 12

Synaptic vesicles

Round and large

Answer 12

Gray Type I (ACH)

Question 13

Synaptic vesicles

Oval, flattened or pleomorphic

Answer 13

Gray Type II

GABA

Question 14

Synaptic region

1-2 micrometer

Answer 14

Gray Type I (ACH)

Question 15

Synaptic region

Less than 1 micrometer

Answer 15

Gray Type II

GABA

Question 16

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

Answer 16

inner gray

Question 17

spinal cord portion
Non basophilic
Myelinated nerve fibers

Fibrous astrocytes and oligodendroglia

Answer 17

outer white

Question 18

Layers of the Cerebellar Cortex

Answer 18

Outer molecular layer

Middle ganglionic layer

Inner granular layer

Question 19

Layers of Cerebral Cortex

Answer 19

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

Question 20

INJURY TO NEURONS (CNS)

Answer 20

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

Question 21

INJURY TO NEURONS (PNS)

Answer 21

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

Question 22

TYPES OF SYNAPSE

Answer 22

Axo-dendritic
Axosomatic
Axo-axonicA

Question 23

Type of neurons according to length of processes

Answer 23

Golgi cell type I

Golgi cell type II

Question 24

Axonal Transport by Microtubules

Answer 24

Anterograde or orthograde transport-

Retrograde transport-

Question 25

Axonal Transport by Microtubules

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

Answer 25

Anterograde or orthograde transport-

Question 26

Axonal Transport by Microtubules

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

Answer 26

Retrograde transport-