DUMS powerpoint

Question 1

CNS- whats in it?

Answer 1

brain and spinal cord

Question 2

PNS- whats in it?

Answer 2

12 CNs and 31 spinal nerves

31 Spinal nerves:
C1-C8
T1-T12
L1-L5
S1-S5
C0

Question 3

name the spinal nerves

Answer 3

31 spinal nerves
C1-C8
T1-T12
L1-L5
S1-S5
C0

Question 4

what is a dermatome?

Answer 4

-Area of skin supplied with sensory innervation from a single nerve
-also supplies sensory innervation to deeper structures
-innervation of skin by adjacent spinal nerves shows overlap

Question 5

what is a myotome?

Answer 5

-the skeletal muscles supplied with motor innervation from a single nerve
-may be deep to dermatome of some spinal nerve, but not always

Question 6

dermatome of nipple

Answer 6

T4

Question 7

dermatome of umbilicus

Answer 7

T10

Question 8

dermatome of posterior scalp, neck and shoulder

Answer 8

C2-C4

Question 9

dermatome of upper limb

Answer 9

C5-T1

Question 10

dermatome of lower limb, gluteal region + perineum

Answer 10

L2- C0

Question 11

where are the cell bodies in CNS and PNS

Answer 11

CNS- nuCleus
PNS- ganglion

Question 12

what innervates the posterior compartment of thigh, leg and sole of foot?

Answer 12

sciatic

Question 13

what controls the spinal cord reflexes

Answer 13

dermatomes and myotomes simoultaneously

Question 14

what and where is the ‘nerve point’ of the neck and why is it important

Answer 14

-just above the midpoint of the posterior border of the SCM (sternocleidomastoid muscle)
-sensory nerves of the cervical plexus
-special care required during biopsy

Question 15

why are T1 and T2 anterior rami important?

Answer 15

important for referred pain from the myocardium

Question 16

what nerve supplies the anatomical snuff box?

Answer 16

by the cutaneous branches of the radial nerve

Question 17

what nerves make up the cervical plexus and what do they supply?

Answer 17

C1-C4
supply:
-neck postural & strap muscles
-diaphragm

Question 18

what nerves make up the brachial plexus and what do they supply?

Answer 18

C5-T1
supply:
-muscles of the upper limb
-extrinsic back muscles

Question 19

what do T2-L3 supply?

Answer 19

-postural back muscles
-intercostal muscles anterolateral abdominal wall muscles

Question 20

what nerves make up the lumbosacral plexus and what do they supply?

Answer 20

L1-S4
supply:
-muscles of the lower back
-perineal skeletal muscles

Question 21

name the parts of the brain

Answer 21

red= frontal
yellow= parietal
blue= temporal
green= occipital
pink= cerebellum
orange= pons
black= medulla oblangata