Nervous Tissue

Question 1

nerve cells

Answer 1

conducting cells specialized to conduct electrical activity that can be sensory, motor, interneurons

Question 2

What is the function of the neuroglia cells ?

Answer 2

nonconducting cells providing physical support, metabolic activity, insulation

Question 3

What type of nervous tissue cells can become cancerous

Answer 3

neuroglial cells

Question 4

Where does the nerve tissue develop from

Answer 4

embryonic ectoderm

Question 5

The pseudounipolar cells are

Answer 5

sensory found in spinal and most cranial sensory gangia

Question 6

the bipolar cells are

Answer 6

sensory and found in retina, cochlear, and vestibular ganglia

Question 7

Multipolar clles are

Answer 7

motor and interneurons and found in MOST cells

Question 8

giemsa stain

Answer 8

a nissle stain showing some of the 6 cortical layers

Question 9

What are the layers of cortical cells

Answer 9

molecular
external granular layer
external pyramidal cell layer
internal granular layer
ganglionic layer
multiform cell layer

Question 10

nissle bodies

Answer 10

RER and ribosomes, high level of metabolism

Question 11

axon hillock

Answer 11

origin of the axon from the perikaryon, free of cell organelles

Question 12

schwann cells

Answer 12

provide myelin for PNS

Question 13

satellite cells

Answer 13

surround neuron cell bodies of spinal ganglia

Question 14

oligodendroglia

Answer 14

provide myelin found in CNS

white matter in CNS

Question 15

astrocytes

Answer 15

most numerous of glial cells
contain GFAP
fibrous type in white matter, protoplasmic found in grey matter

Question 16

microglia

Answer 16

smallest, phagocytic cells, derived from bone marrow

Question 17

where are glial cells except microglial derived from

Answer 17

neural tube

Question 18

ependyma

Answer 18

line the ventricles and central cord

Question 19

Function of myelin sheath

Answer 19

electrically isolates the axon from the surroundings

composed of multiple layers of cell membrane around the axon

Question 20

junction between segments devoid of myelin

Answer 20

node of ranvier

Question 21

inernodal segment

Answer 21

myelin between two ranvier nodes

Question 22

what is the function of the ranvier node

Answer 22

allows fast conduction (saltatory cnduction of nerve impulse)

Question 23

inner and outer lamellae of myelin sheat contains_________-

Answer 23

cytoplasm

Question 24

small islands of the membrane that contain cytoplasm are called

Answer 24

schmidt laterman clefts

Question 25

Function of satellite cells

Answer 25

electrical and metabolic insulation

Question 26

dorsal root ganglion contains

Answer 26

cell bodies of psuedounipolar sensory innervation

Question 27

_______oligodendrocytes can myelinate several axons simultaneousl

Answer 27

single

Question 28

difference between schwann cells and oligodendrocytes

Answer 28

don't have external lamina and fewer schmidt laterman clefts

Question 29

Where are the nodes of ranvier larger

Answer 29

CNS

Question 30

protoplasmic astrocyte

Answer 30

mainly in the gray matter, short branching processes

Question 31

fibrous astrocyte

Answer 31

mainly in the white matter-longer straight processes

Question 32

Ependymal cells

Answer 32

form the simple epithelial lining of CSF filled cavities of CNS, tight junctional complexes, cuboid or columnar, microvilli or cilia cover the choroid plexus (formation of CSF)

Question 33

anterograde transport

Answer 33

molecules synthesized in soma | can be slow or fast

Question 34

retrograde transport

Answer 34

brings regulatory proteins from the bouton to the soma only fast rate mediated by dynein bound microtubules

Question 35

axodendritic

Answer 35

classical synapse

Question 36

axosomatic

Answer 36

axon to cell body

Question 37

axoaxonic

Answer 37

axon to axon

Question 38

dendrodendritic

Answer 38

dendrite to dendrite

Question 39

electrical synapses

Answer 39

mechanism of synaptic transmission

Question 40

endoneurium

Answer 40

circular and longitudinal collagen fibrils around each nerve fiber probably secreted by schwann cells

Question 41

perineurium

Answer 41

specialized connective tissue (contractile cells) | tight junctions between the cells in the same layer-BBB

Question 42

epineurium

Answer 42

dense irregular connective tissue surrounds the nerve and the fascicles contains blood vessels