Nervous system: spinal cord and spinal nerves

Question 1

spinal cord is made up of _____________

Answer 1

100 million neurons

Question 2

spinal cord is the pathway for sensory input to brain and __________ from the brain

Answer 2

motor output

Question 3

spinal cord provides __________ to stimuli

Answer 3

quick reflexes

Question 4

spinal cord is _____ in shape

Answer 4

oval

Question 5

spinal cord starts at the _______ and ends at the _______ as the film terminale

Answer 5

medulla oblongata, conus medularis

Question 6

elongation of the spinal cord stops at age ____ while vertebral column continues

Answer 6

4 or 5

Question 7

conus medullar is (terminal part of spinal cord) ends ar the level of intervertebral disc between ______

Answer 7

L1 and L2

Question 8

filum terminal is an extension of

Answer 8

conus medullaris

Question 9

the central nervous system is protected by (4)

Answer 9

vertebral column

meninges, 3 layers that lie between the norms tissues and the bones

CSF which lies between the meningeal layers, shock absorbent

denticulate ligament

Question 10

all roots make plexus expect the thoracic ____

Answer 10

2-12

Question 11

cervical plexus

C__ - C___ with contribution from C5

Answer 11

C1 - C4

Question 12

cervical plexus

supplies the ___, ____ and _____

Answer 12

head, neck and superior border of shoulder and chest

Question 13

cervical plexus

deep to ____ and anterior to _____ and ______

Answer 13

SCM
middle scalene
levator scapulae

Question 14

cervical plexus

sensory branches:

Answer 14

C2-C4

Question 15

cervical plexus

muscular branches C1-C5
phrenic nerve:

Answer 15

C3-5

Question 16

Brachial plexus

arises from

Answer 16

C5-C8 and T1

Question 17

Brachial plexus

supplies the whole ____, _____ and _____

Answer 17

upper limb, lateral chest wall and superficial muscles of the back

Question 18

Brachial plexus

root unite to form _____

Answer 18

trunks (superior, middle and inferior)

Question 19

Brachial plexus

trunks diverge into

Answer 19

divisions (anterior and posterior)

Question 20

Brachial plexus

divisions in the axilla unite to form _____

Answer 20

cords (medial,, lateral and posterior

Question 21

Brachial plexus

cords end up with ______

Answer 21

terminals (peripheral nerves)

Question 22

Lumbar plexus

roots of spinal nerves ___

Answer 22

L1-L4

Question 23

Lumbar plexus

____ muscle is a landmark (embedded in this muscle)

Answer 23

Psoas

Question 24

Lumbar plexus

supplies the anterolateral ______ , ____ and part of ____

Answer 24

abdominal wall, external genitalia and part of lower limb

Question 25

Lumbar plexus

largest is _______ which innervates anterior compartments of lower limb

Answer 25

femoral nerve

Question 26

Lumbar plexus

5 trunks combine to form

Answer 26

-lateral femoral
-cutaneous nerve
-femoral nerve
-obturator nerve

Question 27

Sacral plexus

the roots of spinal nerves ______

Answer 27

L4-L5 and S1-S4

Question 28

Sacral plexus

supplies ___, ___ and ____

Answer 28

buttocks, perineum and lower limbs

Question 29

Sacral plexus

the _____ arises from the sacral plexus

Answer 29

sciatic nerve

Question 30

Sacral plexus

sciatic nerve through greater sciatic notch branches to

Answer 30

tibial nerve
common fibular nerve

Question 31

tibial nerve: innervate the flexors of the _____ and _____ of the ankle and _____ of the toes.

Answer 31

knee, plantar flexors and flexors

it runs along with posterior tibial artery and vein

Question 32

common fibular nerve: innervates the short head of _____

Answer 32

biceps femoris

Question 33

common fibular nerve is further subdivided into:

Answer 33

superficial fibular nerve
deep fibular nerve

Question 34

superficial fibular nerve innervates

Answer 34

fibulas longus and fibulas breves

Question 35

deep fibular never innervates

Answer 35

anterior tibial muscles and run along with anterior tibial artery and vein

Question 36

coccygeal plexus

small plexus by _____ and coccygeal nerves

Answer 36

S4-S5

Question 37

coccygeal plexus
supplies small area of the skin in the _____

Answer 37

coccygeal region