Spinal cord and spinal Nerves Flashcards Preview

Anatomy & Physiology - Kuntzman > Spinal cord and spinal Nerves > Flashcards

Flashcards in Spinal cord and spinal Nerves Deck (45)
1

nerve block

loss of sensation in a region due to injection of local anesthetic

2

neuralgia

attacks of pain along the entire course of branch of a sensory nerve

3

neuritis

inflammation of one or several nerves that result from irritation to nerve - direct blows, bone fractures, etc

4

What are the 3 menegies which cover the spinal cord and the brain

dura matter, arachnoid mater & pia matter

5

The spinal cord begins as a continuation of the _______________ and ends at about the ____________ as an adult

medulla oblongata; second lumbar vertebra

6

What on the spinal cord serves as points of origin for nerves to the limbs

cervical and lumbar enlargements

7

the tapered inferior portion of the spinal cored is the ___________, from which arise the_____________ and ____________

conus medullaris, filum terminale and cauda erquna

8

How may roots do the spinal nerves connect to each segment of the spinal cord

2

9

the posterior root contains _____________ and the andterior or vental root contains ______________

sensory axons, motor neuron axons

10

conus medullaris

tapered portion of the spinal cord inferior to the lumbar enlargement between L1-L2

11

filum terminale

non nervous fibrous tissue of the spinal cord that extends inferior from the conus medullaris to the coccyx

12

cauda equina

a tail like array of roots of spinal nerves the the inferior end of the spinal cord L2-coccxy

13

posterior root

have 2 roots, anterior and posterior - where it exits or enters the spinal cord.
structure composed of sensory axons lying between a spinal nerve and the dorsolateral aspect of the spinal cord

14

posteior root ganglion

cluster of nerve cells
a group of cell bodies of sensory neurons and their supporting cells located along the posterior root for a spinal nerve

15

anterior root

the structure composed of axons of efferent neurons that emerges from the anterior aspect of the spinal cord and extends laterally to join a posterior root forming a spinal nerve, also called a ventral root

16

dura matter

most superficial of the 3 spinal meninges, composed of dense irregular connective tissue

17

arachnoid matter

the middle menix, avascular covering delicate collagen fibers and elastic fibers, deep to dura mater

18

epidural space

between the dura mater and the wall of the vertebral canal

19

subdural space

between dura mater and the arachnoid mater which contains interstitial fluid

20

subarachnoid - where is it

between the arachnoid mater and the pia mater is the subarachnoid space, which contains the cerebral spinal fluid

21

denticulate ligaments

triangular shaped m. extension of the pia mater suspend the spinal cods

22

anterior median fissure

deep wide groove on the ventral side, groove

23

posterior median sulcus

shallow narrow groove

24

grey and white commissures

grey is the crossbar inside of the spinal cord,

25

central canal

in the center of the gray commissure, sm. space. Extends entire lengh of the spinal cord and is filled with cerebrospinal fluid

26

anterior, posterior and lateral gray horns

know where they are

27

anterior, posterior and lateral white columns

know where they are

28

plexus

a group of nerves branching

29

how many pairs of cervical nerves are there

8

30

Where do nerves exit in relation to their vertebrae

superior

31

which side of the spinal column will the sensory info arrives

posterior

32

descending tracts what kind of info travels along this route

motor

33

ascending tracts what kind of info travels along these tracts

sensory

34

In what order do the subuits for the brachial plexus go?

Roots -> Trunk-> Divisions -> Cords -> Branches

35

Which plexus does the sciatic nerve arrive from

Sacral plexus

36

Dermatome

Dermatorme is the area of the skin that provides sensory input to the CNS via one pair or spinal nerves or the trigeminal nerve

37

Where do we have no plexi

T2-T12

38

The diaphragm nerves are supplied from where

Cervical plexus

39

Does white matter contain both sensory and motor tracts

Yes

40

Muscle spindle

Stretch receptor

41

Golgi tendon organ

Stretch reception in tendons

42

Reflex

Automatic, sudden, involuntary response to a stimulus

43

What is integration

Part of the reflex via the inter-neuron

44

What is a reflex arc

The pathway followed by a nerve impulse that produce the reflex arc

45

What is the chain of events in a reflex arc

Sensory reception, sensory neuron, integrating centre, motor neuron, effector