Histology Nervous Tissue

Question 1

Components of CNS

Answer 1

Brain, brainstem, spinal cord, eye

Question 2

Components of PNS

Answer 2

Spinal and cranial nerves, autonomic nervous systems, enteric (gut) nervous system)

Question 3

What kind of axons does white matter have?

Answer 3

myelinated axons

Question 4

What kind of axons does gray matter have?

Answer 4

unmyelinated axons and nerve cell bodies

Question 5

CNS Glia

Answer 5

Oligodendrocytes make myelin, Astrocytes protect cell bodies, Dendrites are unmyelinated axons and surround blood vessels. Microglia are phagocytic cells (like macrophages). Ependymal line the ventricles.

Question 6

PNS Glia

Answer 6

Neurolemmacyte or Schwann cells (both myelinate)

Question 7

Multipolar cell

Answer 7

Single axon, multiple dendrites

Question 8

Bipolar cell

Answer 8

Retinal, 2 extensions each of 1 axon and 1 dendrite

Question 9

Unipolar cell

Answer 9

No dendrites around soma

Question 10

Pseudounipolar cell

Answer 10

Found in dorsal root ganglion, sensory (axon splits into two branches)

Question 11

Depolarizations will pass through which cell bodies?

Answer 11

Cell bodies of every neuron except for pseudounipolar

Question 12

Axon hillock location

Answer 12

Between cell body and axon

Question 13

Bouton

Answer 13

Axon terminal, contains synaptic vesicles

Question 14

Function of neurotransmitter determined by…

Answer 14

The receptor

Question 15

Axodendritic

Answer 15

Weakest connection (connects with other dendrites)

Question 16

Axosomatic

Answer 16

A little louder connection than axodendritic (connects with soma)

Question 17

Axoaxonic

Answer 17

Strongest connection, connects with axon, can stop a signal in its path or completely start a new one

Question 18

Golgi Type I

Answer 18

Large, projection neurons

Question 19

Golgi Type II

Answer 19

Small, Interneurons, more abundant

Question 20

Cerebellar neurons

Answer 20

looks like 1/4th of a circle. Purkinje cells are only intrinsic Golgi type I cells, the rest are interneurons.

Question 21

Endoneurium

Answer 21

Loose CT around nerves and Schwann cells

Question 22

Perineurium

Answer 22

Around bundles of axons

Question 23

Fascicle

Answer 23

Each bundle of axons

Question 24

Epineurium

Answer 24

Around multiple fascicles (part you see upon dissection)

Question 25

Neuropil

Answer 25

stuff between the actual cell and cell bodies. Assortment of things.

Question 26

CNS Gray Matter

Answer 26

Nuclei

Question 27

CNS White Matter

Answer 27

Tract

Question 28

PNS Gray Matter

Answer 28

Ganglia

Question 29

PNS White Matter

Answer 29

Nerve