Exam 3

Question 1

The brachial plexus is made of the anterior primary rami of what spinal nerves

Answer 1

C5-T1

Sometimes C4 and T2

Question 2

The anterior primary rami C5-T1 making up the brachial plexus travel over what rib on their way to the axilla

Answer 2

Rib 1

Question 3

From medial to lateral how does brachial plexus form

Answer 3

Roots-Trunks-Divisions-Cords-terminal branches

RTDCB

Question 4

True or false; each root of the brachial plexus receives a gray ramus communicans from sympathetic trunk

Answer 4

true

Question 5

The roots of the brachial plexus travel where?

Answer 5

Between anterior and middle scalenes into posterior triangle

And posterior and superior subclavian a.

Question 6

What are the 3 trunks of the brachial plexus

Answer 6

Superior - C5 and C6
Middle - C7
Inferior - C8 and T1

Question 7

After the brachial plexus forms its roots then trunks what does it form?

Answer 7

Anterior and Posterior Divisions

Question 8

The anterior division of the brachial plexus supplies what

Answer 8

Anterior compartment of arm and forearm

Question 9

The posterior division of the brachial plexus supplies what

Answer 9

posterior compartment of arm and forearm

Question 10

The cords of the brachial plexus are name for their relation to what?

Answer 10

axillary artery

Question 11

What makes up the lateral cord of the brachial plexus

Answer 11

Anterior division of superior and middle trunks

C5, C6, C7

Question 12

C5, C6, and C7 make up what cord of the brachial plexus/

Answer 12

Lateral (as well as anterior division of superior and middle trunks)

Question 13

The medial cord of the brachial plexus is composed of what?

Answer 13

Anterior division of inferior trunk

C8 and T1

Question 14

Which cord of the brachial plexus has every spinal level in it?

Answer 14

Posterior cord

C5-T1

Question 15

True or false; the posterior cord of the brachial plexus is made up of all 3 trunks of posterior division

Answer 15

true

Question 16

What are the cords of the brachial plexus named in relation to/

Answer 16

Axillary artery

Question 17

The dorsal scapular n. comes off of what spinal root

Answer 17

C5

Question 18

The levator scapula, rhomboid major and minor all receive motor information from this nerve

Answer 18

dorsal scapular n. (C5)

Question 19

The long thoracic n. is composed of what spinal roots

Answer 19

C5, C6 and C7

Question 20

The serratus anterior receives motor supply from this nerve

Answer 20

Long thoracic (C5,C6,C7)

Question 21

How are the dorsal scapular nerve (C5) and Long thoracic (C5,C6,C7) related?

Answer 21

They are both nerves coming directly off roots of the brachial plexus

Question 22

The supra scapular n. is composed of what spinal levels

Answer 22

C5, C6

Question 23

The supraspinatus and infraspinatus receive motor information from this nerve

Answer 23

Suprascapular nerve (C5,C6)

Question 24

The nerve to the subclavius is composed of what spinal levels

Answer 24

C5 and C6 (just like supra scapular n)

Question 25

The subclavius is innervated by this nerve

Answer 25

Nerve to subclavius (C5,C6)

Question 26

How are the supra scapular nerve and nerve to subclavius related?

Answer 26

They are both nerves coming off the superior trunk of the brachial plexus

Question 27

The lateral pectoral nerve is supplied by what cord levels?

Answer 27

C5, C6, C7

Question 28

What nerve supplies the pectorals major?

Answer 28

``` Lateral pectoral (C5,C6,C7) and Medial Pectoral (C8, T1) ```

Question 29

The musculocutaneous nerve is supplied by what cord levels?

Answer 29

C5, C6, C7

Question 30

The coracobrachialis, biceps brachia, brachial is all receive motor innervation from what nerve

Answer 30

Musculocutaneous nerve (C5,C6, C7)

Question 31

What does the musculocutaneous nerve (C5, C6, C7) eventually becomes what?

Answer 31

Lateral cutaneous n. of the forearm (skin over lateral forearm-sensory)

Question 32

The lateral pectoral n. and musculocutaneous n. are related how?

Answer 32

Both nerves from the lateral cord

Question 33

The medial pectoral n. is supplied by what cord levels?

Answer 33

C8 and T1

Question 34

The pectoralis major and minor are both supplied by what nerve

Answer 34

Medial pectoral n. (C8 and T1)

Question 35

The medial cutaneous n. of the arm is supplied by what cord levels

Answer 35

C8 and T1

Question 36

The sensory information supply of the medial arm between the axilla and elbow is supplied by what

Answer 36

Medial cutaneous n. of the arm

Question 37

The medial cutaneous n. of the forearm is supplied by what cord levels

Answer 37

C8, T1

Question 38

The sensory information over the biceps brachia, and anterior and medial aspect of forearm is supplied by what?

Answer 38

Medial cutaneous n. of the forearm

Question 39

The medial pectoral n. medial cutaneous n. of the arm and medial cutaneous n. of the forearm are all related how?

Answer 39

All nerves from the medial cord

Question 40

The superior sub scapular n. is supplied by what cord levels

Answer 40

C5, C6

Question 41

The subscapularis is supplied by what n.

Answer 41

C5,C6

Question 42

What cord levels supply the thoracodorsal n.

Answer 42

C6, C7, C8

Question 43

What n. supplies the latissimus dorsi

Answer 43

Thoracodorsal n. (C6,C7,C8)

Question 44

What cord levels supply the inferior sub scapular n.

Answer 44

C5, C6

Question 45

The subscapularis and teres major are both supplied by

Answer 45

Subscapular n. (C5,C6)