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MSS Exam 1 > ANATOMY: Shoulder and upper arm > Flashcards

ANATOMY: Shoulder and upper arm Flashcards

1
Q

what is the sister artery to the radial n.?

A

deep brachial a.

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2
Q

pectoralis minor innervation

what is this from?

A

medial and lateral pectoral nerves

lateral and medial cords of the brachial plexus

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3
Q

teres minor innervation

where does this come from off the brachial plexus?

A

axillary n.

terminal branch of the posterior cord

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4
Q

coracobrachialis innervation

where does this come from on the brachial plexus

A

musculocutaneus n.

a terminal branch of the lateral cord

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5
Q

triceps brachii innervation

where does this come from?

A

radial n.

comes from a terminal branch of the posterior cord

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6
Q

list the boundaries of the triangular space

contents?

A

teres major, minor, and long head of triceps

circumflex scapular a.

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7
Q

biceps brachii innervation

where does this come from on the brachial plexus?

A

musculocuteneus n.

terminal branch of the lateral cord.

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8
Q

what vessel and nerve runs beneath the trapezius?

A

accessory n.

superficial branch of the transverse cervical a.

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9
Q

innervation of teres minor

A

axillary n.

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10
Q

coracobrachialis

attachments, function

A

o: coracoid process
i: anteriomedial humerus

adduction of arm, flexes arm

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11
Q

innervation: pectorals major

where does this come from on the brachial plexus?

A

medial and lateral pectoral nerves

lateral and medial cords

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12
Q

supraspinatus

attachments, function

A

o: supraspinous fossa
a: greater tubercle (superior facet)

stabilized GHJ, ABDUCTION

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13
Q

serratus anterior:

attachments, function

A

O: ribs
I: medial border scapula (anterior)

Protracts, tilts glenoid up, hods scapula against thorax

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14
Q

innervation: levator scapulae

the nerve is a branch off of what?

A

dorsal scapular n.

C5 nerve root

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15
Q

latissimus dorsi

attachments, function

A

o: lower thoracic ad lumbar spinous processes, ilium
i: ANTERIOR inter tubercular groove humerus (middle facet)

F: Adduction arm, extension arm, medial rotation

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16
Q

innervation: latissimus dorsi

where does this come from?

A

thoracodorsal n.

from the posterior cord of the brachial plexus (middle sub scapular n.)

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17
Q

innervation of supraspinatus

A

suprascapular n.

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18
Q

innervation of trapezius

A

accessory n. (CN 11)

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19
Q

brachialis

attachments, function

A

o: anterior humerus
i: ulnar tuberosity

flexes forearm

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20
Q

attachments for supraspinales:

FUNCTION

A

supraspinous fossa —- greater tubercle humerus (superior facet)

ABDUCTION, stabilization GHJ

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21
Q

biceps brachii

attachments, function

A

o: coracoid, supraglenoid tubercle
i: radial tuberosity

flexes forearm, flexes arm weakly
SUPINATION

22
Q

Impingement of suprascapular n. at ________ notch effects ___________ AND __________!

Impingement of suprascapular n. at __________ notch – yields atrophy of infraspinatus

A

scapular notch - suprasinatus, infraspinatus

spinoglenoid notch - infraspinatus

23
Q

pectoralis minor

attachments
function

A

o: ribs
i: coracoid process of scapula

depresses scapula, protracts

24
Q

supraspinatus innervation

where does this come from on the brachial plexus?

A

suprascapular n.

from the superior trunk (non-terminal branch)

25
Q

list the boundaries of the quadrangular space

contents?

A

teres minor, teres major, long head of the triceps brachii, humerus

axillary n., posterior circumflex humeral a.

26
Q

innervation: rhomboids major and minor

A

dorsal scapular n.

C5 nerve root

27
Q

teres minor

attachments, function

A

o: inferior angle scapula
i: intertubercular groove of ANTERIOR humerus (most medial facet)

adduct arm, extend arm, medially rotate arm (mini latissimus dorsi)

28
Q

pectorals major

attachments, function

A

o: sternum, clavicle
i: ANTERIOR inter tubercular groove (most lateral facet)

F: medial rotation arm, adducts arm, flexes arm (upper fibers), extends flexed arm (lower fibers)

29
Q

subscapularis innervation

where does this come from on the brachial plexus?

A

upper and lower sub scapular nerve

from the posterior cord

30
Q

rhomboids major and minor

attachments, function

A

o: spinous processes C7-T5
i: medial border of scapula

F: retract, elevate scapula, tilt glenoid down

31
Q

deltoideus innervation.

where does this come from on the brachial plexus?

A

axillary n.

branch off the posterior cord

32
Q

The axillary artery, axillary vein and brachial plexus pass posterior to ___________; any tightness or swelling of the muscle may result in ___________ syndrome

A

pectoralis minor

pectoralis minor syndrome

33
Q

innervation of subscapularis

A

upper and lower subscapular n.

34
Q

levator scapulae

attachments, function

A

o: cervical transverse processes
i: superior angle scapula

F: elevation of scapula, tilts glenoid down

35
Q

deltoideus

attachments, function

A

o: spine of scapula, acromion, clavicle
i: deltoid tuberosity of humerus

ABDUCTION, upper fibers flex arm, lower fibers extend arm

36
Q

innervation of infraspinatus

A

suprascapular n.

37
Q

what artery runs with the long thoracic n.?

what main a. does this branch off of?

A

lateral thoracic a.

axillary a.

38
Q

attachments teres minor:

FUNCTION

A

axillary border scapula — greater tubercle humerus (inferior facet)

lateral rotation, stabilization GHJ

39
Q

infraspinatus

attachments, function

A

o: infraspinous fossa
i: greater tubercle, middle facet

laterally rotates arm, stabilizes GHJ

40
Q

brachialis innervation

where does this come from on the brachial plexus?

A

musculocutaneus n.

terminal branch of the lateral cord

41
Q

serratus anterior innervation. what is this from?

A

long thoracic nerve

nerve roots of C5-7

42
Q

attachments infraspinales:

FUNCTION

A

infraspinous fossa — greater tubercle humerus (middle facet)

lateral rotation, stabilization GHJ

43
Q

buddy artery to the suprascapular n.

where does this come from (main a.?)

A

suprascapular a.

branches off the subclavian a. and travels above the scapular ligament and notch

44
Q

innervation: teres minor

where does this come from on the brachial plexus?

A

lower sub scapular n.

posterior cord

45
Q

infrapinatus innervation

where does this come from off the brachial plexus?

A

suprascapular n.

comes off the superior trunk of the brachial plexus

46
Q

what are the muscles of the rotator cuff?

A

supraspinales, infraspinalis, teres minor, subscapularis

47
Q

triceps brachii

attachments, function

A

o: posterior humerus, infraglenous tubercle of scapula
i: olecranon process

extension of forearm, extension of arm (long head)

48
Q

subscapularis

attachments, innervation

A

o: sub scapular fossa
i: lesser tubercle humerus

medial rotation of arm, stabilization of GHJ

49
Q

attachments and functions

trapezius

A

o: skull, ligamentum nuchae, thoracic spinous processes
i: scapular spine, acromion, clavicle

a: elevates scapula, depresses scapula, retraction of scapula, rotates glenoid upwards

50
Q

attachments subscapularis:

FUNCTION

A

subscapular fossa — lesser tubercle humerus

medial rotation, stabilization GHJ

MSS Exam 1 (8 decks)

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