Overview

Question 1

All neurons have at least 1 axon and 1 or more dendrites EXCEPT 2

Answer 1

amacrine cells of retina

granule cells of olfactory bulb

Question 2

axons are covered with myelin sheaths from supporting cells: namely

Answer 2

Schwann cells - PNS

Oligodendroglia - CNS

Question 3

Largest of the neurohlia
stain poorly
nuclei are ovoid and centrally located
cytoplasm contain small round granules and glial filaments composed of glial fibrillary acidic protein

Answer 3

Astrocytes

Question 4

During development, these supporting cells provide a framework which provides neuronal migration

Answer 4

Astrocytes (radial glia)

Question 5

Type of astrocytes found primarily in the white matter, concerned with metabolite transference and the repair of damaged tissue

Answer 5

Fibrous astrocytes

Question 6

Aka as satellite cells
in close association with neurons and may partially envelop them
located primarily in the gray matter
serve as metabolic intermediary for nerve cells

Answer 6

Protoplasmic astrocytes

Question 7

Nuclei are round, condensed stainable (heterochromatin) nuceloplasm
cytoplasm is densely filled with mitochondria, micrtubules, ribosomes but devoid of neurofilaments

Answer 7

Oligodendroglia

Question 8

Line the central canal of the Spinal Cord and ventricles of the brain
vary from cuboidal to columnar in shape and may possess cilia
Involved in the formation of the CSF

Answer 8

Ependymal Cells

Question 9

These cells are mesodermal in origin
Cell bodies are small, little cytoplasm, densely staining and flat elongated nuclei
in the presence of destructive lesion, these cells enlarge and become mobile and phagocytic, thus they become macrophages, or scavenger cells

Answer 9

Microglia

Question 10

collections of nerve cell bodies located outside the CNS

Answer 10

Ganglia

Question 11

2 types of ganglia

Answer 11

Craniospinal

Autonomic

Question 12

Craniospinal composed of

Answer 12

31 pairs pf spinal nerves

CN V, VII, VIII, IX, X

Question 13

Spinal Group are what type of neurons

Vestibular and cochlear nerves are of what type

Answer 13

Spinal group - pseudounipolar

Vestibular and cochlear - bipolar neurons

Question 14

Location of
Sympathetic Ganglia
Parasymathetic

Answer 14

Sympathetic - adjacent to vertebral bodies

Paraympathetic - located within the organ they innervate

Question 15

type of neurons in the autonomic ganglia

Answer 15

multipolar

Question 16

Nerve Fiber Sizes
A alpha
A beta
A gamma
A delta
B
C

Answer 16

A alpha (Ia and Ib) - 12-22 um
A beta (II) - 5-12 um
A gamma (II) - 2-8 um
A delta (III) - 1-5 um
B <3 um
C (IV) 0,1 - 0.3 um

Question 17

function and source of which type of Nerve Fibers

proprioception, stretch and motor to skeletal muscle fibers (extrafusal)

Answer 17

A alpha Ia

Question 18

function and source of which type of Nerve Fibers

contractile force Golgi tendon organ

Answer 18

A alpha Ib

Question 19

function and source of which type of Nerve Fibers

pressure, strech, touch, vibratory sense

Answer 19

A beta

Question 20

function and source of which type of Nerve Fibers

Motor to muscle spindle (intrafusal)

Answer 20

A gamma

Question 21

function and source of which type of Nerve Fibers

some nerve endings, serving pain, temp, touch

Answer 21

A delta

Question 22

function and source of which type of Nerve Fibers

sympathetic preganglionic axons

Answer 22

B

Question 23

function and source of which type of Nerve Fibers

other pain, temp, mechanical receptors, sympathetic ganglion, postganglionic axons (motor to smooth muscle and glands)

Answer 23

C

Question 24

characeteristic proteins involved in fast anterograde trasnport and fast retrograde transport

Answer 24

fast anterograde trasnport - kinesin

fast retrograde transport - dynein

Question 25

True or False

microglia is derived from neuroepithelium

Answer 25

FALSE

mesoderm