Histology Of The Nerve Cell

Question 0

Dendrites

Answer 0

Tree like branches that bring information into the nerve cell body

Question 1

Nerve cell body is found where?

Answer 1

Spinal cord

Question 2

Single myelinated axon

Answer 2

Carries motor impulses away from the Nerve cell body to the skeletal muscle.

Question 3

Mode of transmission

Answer 3

Arriving (afferent) messages are carried by the dendrites.

Exiting (efferent) message are transmitted by the axon

Question 4

Nissle substance is….

Answer 4

Densely concentrated rough endoplasmic reticulum found in the nerve cell cytoplasm, Dendritic branches and axon.

Question 5

Axon hillock

Answer 5

Clear initial region in between nissl substance

Question 6

Myelin sheath

Answer 6

Surround the axon produced by Schwann cells.

Composed of phospholipids in the cytoplasm of the Schwann cells.

Question 7

Nodes of Ranvier

Answer 7

Small gaps in the Myelin present between adjacent Schwann cells.
Increase the speed of nerve impulses.

Question 8

Saltatory conduction

Answer 8

Mechanism practiced by nodes of Ranvier to increase speed of nerve impulses.

Question 9

Layers of peripheral nerve

Answer 9

Endoneurium
Perineurium
Epineurium
Comparable to the connective tissue layers associated with the skeletal fibers.

Question 10

Endoneurium

Answer 10

Innermost layer of peripheral nerve composed of delicate fibers that surround individual axons.

Question 11

Perineurium

Answer 11

Layer of peripheral nerve that Encloses bundled of axons.

Question 12

Epineurium

Answer 12

Outermost layer of peripheral nerve that is composed of tough fibrous sheath around the entire peripheral nerve.