axilla and arm learning objectives

Question 1

the __ muscle attachments from the lateral epicondyle of the humerus to the lateral surface of the olecranon process

Answer 1

anconeus

Question 2

the anconeus muscle __ the elbow

Answer 2

extends

Question 3

the __ nerve innervates the anconeus muscle and its contribution are ___ spinal segments

Answer 3

radial, C7-8

Question 4

the biceps brachii short head attaches from the ___ process of the scapula to the ___ ____ and ___ ____ ____ of the radius

Answer 4

coracoid process, radial tuberosity, deep antebrachial fascia

Question 5

the biceps brachii long head attaches from the ___ ____ of the scapula to the ____ ____ and ___ ____ ____ of the radius

Answer 5

supraglenoid tubercle, radial tuberosity, deep antebrachial fascia

Question 6

the ____ nerve innervates biceps brachii and its contributions are ____ spinal cord segments

Answer 6

musculocutaneous, C5-6

Question 7

what are the actions of biceps brachii

Answer 7

flexion of shoulder (long head), and forearm. Also supination of the forearm

Question 8

what muscle attaches from the distal anterior shaft of the humerus and medial/lateral intermusclar septa to the coronoid process and ulnar tuberosity

Answer 8

brachialis

Question 9

what are the attachments of the brachialis

Answer 9

the distal anterior shaft of the humerus and medial/lateral intermusclar septa to the coronoid process and ulnar tuberosity

Question 10

the brachialis performs ___ of the elbow

Answer 10

flexion

Question 11

brachialis muscle is innervated by ______ nerve from spinal cord segment ____. As well as a small branch from ____ nerve

Answer 11

musculocutaneous, C5-6, radial

Question 12

coracobrachialis attaches from ___ ____ of the scapula to the ___ ____ ___ of the humerus

Answer 12

coracoid process, proximal medial shaft of the humerus

Question 13

the coracobrachialis muscle performs ____ and ____ of the shoulder

Answer 13

adduction, flexion

Question 14

coracobrachialis is innervated by ____ that receives its contributions from ____ spinal cord segments

Answer 14

musculocutaneous, C6-7

Question 15

the long head of triceps brachii attaches from the ____ ____ of the scapula to the ____ _____ of the ulna

Answer 15

infraglenoid tubercle, olecranon process

Question 16

the lateral head of the triceps brachii attaches from the ____ ____ shaft of the humerus to the ____ ____ of the ulna

Answer 16

proximal posterolateral, olecranon process of the ulna

Question 17

the medial head of the triceps brachii attaches from the ___ ___ of the shaft of the humerus to the ____ ____ of the ulna

Answer 17

posteromedial, olecranon process of the ulna

Question 18

the triceps brachii muscle causes ___ at the shoulder (long head), and ____ at the elbow

Answer 18

extension, extension

Question 19

the ___ nerve innervates triceps brachii and its contributions are from ___ spinal cord segments

Answer 19

radial, C6-T1

Question 20

what is the superior/apex border of the axilla

Answer 20

1st rib and clavicle

Question 21

what is the inferior/base border of the axilla

Answer 21

skin of armpit

Question 22

what is the medial border of the axilla

Answer 22

thoracic wall + serratus anterior

Question 23

what is the anterior border of the axilla

Answer 23

pectoralis major and minor

Question 24

what is the posterior border of the axilla

Answer 24

scapula + subscapularis muscle

Question 25

what is the lateral border of the scapula

Answer 25

humerus

Question 26

what are the contents of the axilla

Answer 26

1. axillary artery 2. axillary vein 3. axillary lymph nodes 4. 3 cords of brachial plexus

Question 27

the brachial plexus has __ roots, __ trunks, ____ divisions, ____ cords, and ____ nerves

Answer 27

1. 5 roots (anterior rami) 2. 3 trunks (upper, middle, lower) 3. 2 division (anterior and posterior) 4. 3 cords (lateral, posterior, medial) 5. 5 terminal branches

Question 28

___ and ____ structures of the brachial plexus are before the clavicle

Answer 28

roots and trunks

Question 29

dorsal scapular nerve is created from the contribution of ____ spinal segments

Answer 29

C4-5

Question 30

long thoracic nerve is created from the contribution of ____ spinal segments

Answer 30

C5-7

Question 31

____ _____ nerve and ____ ____ nerve emerge from roots of the brachial plexus

Answer 31

dorsal scapular, long thoracic

Question 32

dorsal scapular nerve functions are _____ ____ and ____ but NOT sensory

Answer 32

postganglionic sympathetic, motor

Question 33

what are the functions of long thoracic nerve

Answer 33

1. sensory 2. postganglionic sympathetic 3. motor

Question 34

what named peripheral nerves come off the upper trunk of the brachial plexus

Answer 34

suprascapular and subclavian

Question 35

suprascapular nerve's function is ____, ______ _____, and _____

Answer 35

sensory, postganglionic sympathetic, and motor

Question 36

what is the function of subclavian nerve

Answer 36

sensory, postganglionic symapthetic, and motor

Question 37

what are the peripheral nerves of the brachial plexus that come off lateral cord

Answer 37

1. lateral pectoral nerve 2. musculocutaneous 3. lateral root of median nerve

Question 38

what is the function of lateral pectoral nerve

Answer 38

sensory, postganglionic sympathetic, and motor

Question 39

what are the sub nerves from musculocutaneous

Answer 39

1. muscular branches 2. lateral cutaneous nerve of the forearm

Question 40

what are the functions of the muscular branches of musculocutaneous nerve

Answer 40

1. sensory 2. postganglionic sympathetic 3. motor innervation

Question 41

C8-T1 spinal cord segments are in what peripheral nerves

Answer 41

1. medial pectoral nerve 2. medial cutaneous nerve of arm 3. medial cutaneous nerve of forearm 4. medial root of median nerve

Question 42

ulnar nerve is created from what spinal cord segments

Answer 42

C7-T1

Question 43

upper subscapular nerve is created from what spinal nerve segments

Answer 43

C5-6

Question 44

lower subscapular nerve is from what spinal cord segments

Answer 44

C5-6

Question 45

radial nerve is created from what spinal cord segments

Answer 45

C5-T1

Question 46

the most common direction for shoulder dislocation

Answer 46

anterior

Question 47

the ___ ____ artery passes through the triangular space

Answer 47

circumflex scapular

Question 48

the ___ ____ artery and ___ nerve pass through the triceps hiatus

Answer 48

profunda brachii, radial

Question 49

region 1 of the axillary artery has what branch

Answer 49

superior thoracic

Question 50

region 2 of the axillary artery has 2 branches which are?

Answer 50

1. thoracoacromial trunk 2. lateral thoracic

Question 51

region 3 of the axillary artery has what 3 branches off of it?

Answer 51

1. posterior circumflex humeral artery 2. anterior circumflex humeral artery 3. subscapular

Question 52

what are the branches of the subscapular artery

Answer 52

thoracodorsal artery circumflex scapular

Question 53

what is the name of the brachial fascia that compartmentalize the arm into anterior and posterior

Answer 53

1. medial intermuscular septum 2. lateral intermuscular septum

Question 54

the anterior arm compartment is innervated by ____, its arterial supply is ____, and its common function is _____

Answer 54

1. musculocutaneous 2. brachial artery 3. shoulder and elbow flexion

Question 55

the common function of the posterior arm compartment is ____, its innervated by ____, and its arterial supply is ____

Answer 55

1. shoulder and forearm extension 2. radial nerve 3. profunda brachii

Question 56

what muscular are in the posterior compartment of the arm

Answer 56

triceps brachii and anconeus

Question 57

if a patient experienced a fracture to the humerus that lacerated the spiral groove (radial groove) what structures were most likely injured

Answer 57

radial nerve and profunda brachii

Question 58

what structures were most likely damage if the surgical neck of the humerus was broken

Answer 58

posterior circumflex humeral artery and axillary artery (double check this)

Question 59

lymph drains into ____ junction (also called venous angle

Answer 59

jugulosubclavian

Question 60

the right lymphatic duct ONLY drains from what structures

Answer 60

1. R head/neck 2. R thorax 3. R Upper limb

Question 61

how many lymph nodes are within a " lymph group"

Answer 61

3-7

Question 62

what lymph node groups are in the axilla

Answer 62

1. apical 2. central 3. subscapular 4. pectoral 5. humeral

Question 63

the humeral lymph group drains what structures

Answer 63

1. hand 2. forearm 3. medial arm 4. deep forearm

Question 64

the subscapular lymph group drains what structures

Answer 64

1. posterior shoulder/thorax 2. scapula

Question 65

the pectoral lymph group drains what structures

Answer 65

1. anterior thorax 2. breast

Question 66

the humeral, pectoral, and subscapular lymph nod groups drain into the ____ group which ultimately goes to the ____ group and then the ____ trunk to the ____ duct

Answer 66

central, apical, R subclavian, R lymphatic