Brachial plexus

Question 1

surroundings of the axilla

Answer 1

Posterior wall:
1. Scapula
2. Subscapularis
3. Insertion of latissimus dorsi
4. Teres major
 
Lateral wall:
Intertubercular groove of humerus

Anterior wall:
1. Pectoralis major muscle
2. Pectoralis minor muscle

Medial wall:

1. Upper 4-5 ribs
2. Intercostal muscles
3. Serratus anterior muscle

Question 2

Subscapularis

Answer 2

posterior of scapula

Question 3

origins of latissimus dorsi & trees major

Answer 3

-latissimus dorsi inserst anterior to teres major

Question 4

name changes for subclavian artery

Answer 4

Subclavian artery changes name to axillary artery at anterior dotted, then changes name at again to brachial artery at inferior dots

Question 5

dcap

Answer 5

Deltoid, clavicular acromonial, pectoral

Question 6

Lymph-

Answer 6

Lymph- one way system of getting read of foreign or infected things in the body

Question 7

thoracic duct vs right lymphatic duct

Answer 7

Waste up on right side is handled by right lymphatic duct

Thoracic duct- lower body and left side

Question 8

vertebrae associated with brachial plexus

and order of sections of brachial plexus

Answer 8

c5, 56,c7,c8,t1

rami to- to trunks- to divisions- cords(3 related to their relationship to the axillary artery-to terminal branches

Question 9

M

Answer 9

should be under pec minor (right at armpit area)

Ulnar nerve will go posterior to elbow. Medial goes anterior to elbow

Question 10

Anterior nerves do flexion

Posterior nerves do extension

Answer 10

*

Question 11

musculocutaneous nerve

Answer 11

Musculocutaneous nerve (C5-C7):
Innervates muscles of anterior arm

Question 12

Lateral pectoral nerve

Answer 12

Lateral pectoral nerve:
Motor to pectoralis major

lateral looks like its going medial on corps

Question 13

Medial pectoral nerve:

Answer 13

Medial pectoral nerve:

Motor to pectoralis major and pectoralis minor

Question 14

ulnar nerve

Answer 14

Ulnar is 5th and half of 4th digit (yellow)

Question 15

Median nerve:

Answer 15

purple

Median nerve:

1. Motor to most muscles of anterior forearm
2. Motor to some intrinsic muscles of hand [thenar (thumb) muscles and lateral 2 lumbricals]
3. Sensory to lateral 2/3rd of palm and palmar side of lateral 3.5 fingers and their nail beds

Question 16

radial nerve; posterior

Answer 16

Radial nerve:

1. Motor to extensors of posterior arm and posterior forearm
2. Sensory to skin of posterior arm, posterior forearm, dorsolateral hand, and proximal part of dorsum of lateral 3.5 digits

Question 17

Axillary nerve: posterior

Answer 17

Axillary nerve:

1. Motor to deltoid and teres minor of shoulder
2. Sensory to skin of upper lateral arm

Question 18

Lower subscapular nerve: posterior

Answer 18

Lower subscapular nerve: Motor to subscapularis and teres major

Question 19

Middle subscapular (thoracodorsal) nerve:Posterior

Answer 19

Middle subscapular (thoracodorsal) nerve:
Motor to latissimus dorsi

Question 20

Upper subscapular nerve: posterior

Answer 20

Upper subscapular nerve: Motor to subscapularis

Question 21

Dorsal scapular nerve (C5):

Answer 21

Dorsal scapular nerve (C5):

Motor to levator scapulae, rhomboid major and rhomboid minor to scapula

Question 22

Long thoracic nerve (C5-C7)

Answer 22

Long thoracic nerve (C5-C7)

(nerve to serratus anterior)

Question 23

Suprascapular nerve (C5, C6):

Answer 23

Motor to supraspinatus and infraspintus of scapula

Question 24

Nerve to subclavius:

Answer 24

Nerve to subclavius:

Motor to subclavius muscle