Chpt 13 Flashcards Preview

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Flashcards in Chpt 13 Deck (16):
1

Below L 2, the vertebral canal is occupied by a bundle of spinal nerves called

the caudal equina

2

The brachial plexus give rise to all of the following nerves except

The obturator nerve

3

Nerve fibers that adjust the tension in a muscle spindle are called

gamma motor neurons

4

A stretch reflex requires the action of _______ to prevent an antagonistic muscle from interfering with the agonist.

reciprocal inhibitions

5

A patient has a gunshot wound that caused a bone fragment to nick the spinal cord. The patient now feels no pain or temperature sensations from that level of the body down. Most likely the _____ was damaged.

spino-thalamic tract

6

Which is not a region of the spinal cord

pelvic

7

In the spinal cord, the somas of the lower motor neurons are found in the

the anterior horns

8

The outermost connective tissue wrapping of the spinal nerve is called the

epineurium

9

The intercostal nerves between the ribs arise from which spinal nerve plexus?

thorasic

10

All somatic reflexes share all of the following properties execept

They are monosynaptic

11

Outside the CNS the somas of the neurons are clustered in swellings called

Ganglia

12

Distal to the inter vertebral foramen, a spinal nerve branches into an anterior and posterior

Ramus

13

The cerebellum receives feedback from the muscles and joints by way of the _____ tracts of the spinal cord.

spinocerebellar

14

In the _____ reflex, contraction of the flexor muscles in one limb is accompanied by the contraction of extensor muscles in the contralateral limb

Cross extension

15

Modified muscle fibers serving primarily to detect stretch are called

Intrafusal fibers

16

The ______ nerve arises from the cervical plexus and innervates the diaphram

Pherinic