Set of flashcards Histology Written Exam MC 3

Flashcards	20
Language	English
Category	Medical
Level	University
Created / Updated	28.01.2018 / 28.01.2018
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Which of the following ranges encompasses the length of a typical myelin segment (internode), between two nodes of Ranvier?

20 to 200 nm

0.2 to 2 μm

2 to 20μm

20 to 200μm

0.2 to 2mm

Which of the following ranges encompasses the diameter of most myelinated axons?

10 to 200 nm

0.1 to 2 mm

0.1 to 2μm

1 to 20μm

10 to 200μm

Peripheral axons which are enveloped by Schwann cell cytoplasm but are not wrapped by several layers of membrane are called:

motor nerve fibers

myelinated nerve fibers

unmyelinated nerve fibers

sensory nerve fibers

postganglionic nerve fibers

A group of nerve cell bodies located outside the central nervous system is called a:

nerve

ganglion

nucleus

column

commissure

Small cells closely associated with neurons in peripheral ganglia may be called:

satellite cells

pyramidal cells

postganglionic cells

autonomic cells

preganglionic cells

Cell bodies of the peripheral receptor neurons associated with spinal sensory nerve roots are located:

near the peripheral receptor organ

in spinal gray matter

in dorsal root ganglia

two of the above

all of the above

Cell bodies of motor neurons associated with spinal motor nerve roots may be located:

within the epimysium of the muscle they innervate

in spinal gray matter

in dorsal root ganglia

at any point along a motor nerve

in the cerebral cortex

Dorsal root ganglia contain:

cell bodies of peripheral skin and muscle receptor neurons

spinal motor neurons

sympathetic neurons

parasympathetic neurons

all of the above