anatomy upper limb

Question 1

what are the rotator cuff muscles?

Answer 1

supraspinatus, infraspinatous, teres minor, subscapularis

Question 2

what passes attaches to the margin of the glenoid cavity deepening the cavity?

Answer 2

Glenoid labrum

Question 3

what attaches to supraglenoid tubercle and passes through the articular cavity superior to the head of the humerus?

Answer 3

Tendon of long head of biceps brachii

Question 4

what does the musculotendinous collar provide?

Answer 4

joint stability without compromising ROM

Question 5

deltoid origin and insertion?

Answer 5

O: spine of scapula, acromion, and lateral clavicle.
I: deltoid tuberosity of humerus

Question 6

what innervates the deltoid? whats the function?

Answer 6

Axillary nerve; abduction of arm beyond initial 15 degrees

Question 7

the posterior region of the scapula contains 5 muscles, what are they?

Answer 7

Supraspinatus, infraspinatus, teres major, teres minor, and long head of biceps brachii

Question 8

supraspinatus origin and insertion?

Answer 8

O: medial 2/3 of supraspinous fossa
I: greater tubercle of humerus

Question 9

Supraspinatus innervation? Function?

Answer 9

suprascapular nerve; initiation of abduction to 15 degrees

Question 10

Infraspinatus origin and insertion?

Answer 10

O: medial 2/3 of infraspinous fossa
I: greater tubercle of humerus

Question 11

Innervation of infraspinatus? function?

Answer 11

suprascapular nerve; lateral roation of arm

Question 12

teres minor origin and insertion?

Answer 12

O: posterior surface of scapula adjacent to lateral border
I: greater tubercle of humerus

Question 13

Innervation of teres minor? function?

Answer 13

axillary nerve; lateral rotation of arm

Question 14

teres major origin and insertion?

Answer 14

O: inferior angle of scapula
I: Intertubercular sulcus of humerus

Question 15

Innervation of teres major? Function?

Answer 15

lower subscapular nerve; medial roation, adduction, and extension of arm.

Question 16

what is the suprascapular foramen formed by?

Answer 16

suprascapular notch and superior transverse scapular ligament

Question 17

what passes through the suprascapular foramen?

Answer 17

suprascapular nerve

Question 18

what is the quadrangular space formed by?

Answer 18

inferior margin of teres minor, surgical neck of humerus, superior margin of teres minor, lateral margin of long head of triceps brachii

Question 19

What passes through the quadangular space?

Answer 19

axillary nerve, posterior circumflex humeral artery and vein.

Question 20

what forms the triangular space?

Answer 20

median margin of long head of triceps brachii, superior margin of teres major, and inferior margin of teres minor

Question 21

what passes through the triangular space?

Answer 21

circumflex scapular artery and vein

Question 22

what forms the triangular interval?

Answer 22

lateral margin of long head of triceps brachii, shaft of humerus, and inferior margin of teres major

Question 23

What passes through the triangular interval?

Answer 23

radial nerve and profunda brachii artery

Question 24

what supplies the supraspinatus and infraspinatus muscles with blood?

Answer 24

suprascapular artery

Question 25

where does the posterior circumflex artery originate? what does it supply?

Answer 25

the 3rd part of axillary artery; supplies related muscles and glenohumeral joint.

Question 26

where does the circumflex artery originate? what's it supply?

Answer 26

branch of subscapular artery which originates from 3rd part of axillary artery; supplies related muscles in scapular region.

Question 27

the axillary vein becomes what when it crosses the lateral margin of the first rib?

Answer 27

subclavian vein

Question 28

what is the origin and insertion of pectoralis major?

Answer 28

O: clavicular head originates on medial half of clavicle and sternocostal head originates from medial part of anterior thoracic wall I: humerus

Question 29

what innervates the pectoralis major? function?

Answer 29

lateral and medial pectoral nerve which originates from brachial plexus; flexion, adduction, and medial rotation of arm at glenohumeral joint

Question 30

where is the subclavius muscle located?

Answer 30

deep to pec major between the clavicle and first rib

Question 31

what innervates the subclavius muscle?

Answer 31

branch from superior trunk of brachial plexus (nerve to the subclavius muscle)

Question 32

where does the pec minor originate and insert?

Answer 32

O: anterior surfaces of ribs 1-5 I: coracoid process of scapula

Question 33

pec minor innervation and function?

Answer 33

medial pectoral nerve which originates from the brachial plexus; protracts scapula and depresses the lateral angle of scapula

Question 34

serratus anterior origin and insertion?

Answer 34

O: lateral surface of ribs 1-9 I: medial border of scapula

Question 35

innervation of serratus anterior? function?

Answer 35

long thoracic nerve from the brachial plexus; protraction and rotation of scapula

Question 36

which muscles attach at the intertubercular sulcus?

Answer 36

pec major, latissimus dorsi, and teres major

Question 37

subscapularis origin and insertion?

Answer 37

O: medial 2/3 of subscapular fossa I: lesser tubercle of humerus

Question 38

whats the innervation of the subscapularis? function?

Answer 38

upper and lower subscapular nerve; medial rotation of arm

Question 39

short head of biceps brachii origin and insertion?

Answer 39

O: coracoid process I: supraglenoid tubercle of scapula

Question 40

Coracobrachialis origin and insertion?

Answer 40

O: coracoid process I: humeral shaft

Question 41

where does the axillary artery become the brachial artery?

Answer 41

Inferior margin of teres major muscle

Question 42

what separates the axillary artery into its 3 parts?

Answer 42

the pec minor that passes anterior to the axillary artery

Question 43

what artery branches off the 1st part of the axillary artery?

Answer 43

superior thoracic artery

Question 44

which arteries branch off the 2nd part of the axillary artery?

Answer 44

throaco-acromial artery and the lateral thoracic artery

Question 45

which arteries branch off the 3rd part of the axillary artery?

Answer 45

subscapular artery, anterior circumflex humeral artery, and posterior circumflex humeral artery.

Question 46

what does the superior thoracic artery supply?

Answer 46

upper regions of medial and anterior axillary walls

Question 47

what does the thoraco-acromial artery supply? what 4 branches does it divide into?

Answer 47

supplies anterior axillary wall, divides into pectoral, deltoid, clavicular, and acromial branches.

Question 48

what does the lateral thoracic artery supply?

Answer 48

lateral aspect of breast, pectoral muscles, and serratus anterior

Question 49

what does the subscapular artery supply?

Answer 49

posterior wall of axilla and posterior scapular region

Question 50

what are the two terminal branches of the subscapular artery? what do they supply?

Answer 50

circumflex artery and thoracodorsal artery. supply the latissimus dorsi

Question 51

where does the axillary vein begin?

Answer 51

lower margin of teres major

Question 52

what is the axillary vein a continuation of?

Answer 52

basilic vein

Question 53

when does the axillary vein become the subclavian vein?

Answer 53

when it crosses the lateral border of the first rib

Question 54

what forms the brachial plexus?

Answer 54

anterior tami of C5 C6 C7 C8 and T1

Question 55

what does the dorsal scapular nerve innervate?

Answer 55

rhomboid major and minor and part of levator scap

Question 56

what innervates the serratus anterior?

Answer 56

long thoracic nerve

Question 57

what are the 5 groups of axillary lymph nodes?

Answer 57

humeral, pectoral, subscapular, central, apical

Question 58

where are the lymph nodes of the humeral lymph nodes found?

Answer 58

upper limb

Question 59

where are the lymph nodes of the pectoral lymph nodes found?

Answer 59

abdominal wall, chest, mammary gland

Question 60

where are the apical lymph nodes found?

Answer 60

most superior, they drain all other groups of nodes in the region.

Question 61

the efferent vessels from the apical group of lymph nodes converge to form what?

Answer 61

subclavian trunk