Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Anatomy > Muscles - Scapula, Upper limb > Flashcards

Muscles - Scapula, Upper limb Flashcards

0
Q

Trapezius action:

A

Rotates, elevates, retracts, and depresses scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

Trapezius:

A

O: Superior nuchal line, external occipital protuberance, ligamentum nuchae, spinous process of C7-T12
I: lateral 1/3 of clavicle, acromion, spine of scapula
N: CN 11 (Accessory n)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Latissimus dorsi:

A

O: Spinous processes T6-L5, sacrum, iliac crest, and ribs 10-12
I: Intertubercular groove of humerus
N: Thoracodorsal n.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Latissimus dorsi action:

A

Extends, adducts, and medially rotates humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Levator scapulae:

A

O: Transverse processes of C1-C4
I: Superior angle of scapula
N: Dorsal scapular n

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Levator scapulae action:

A

Elevates and rotates scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Rhomboid major and minor:

A

O: Spinous processes of C7-T5
I: Medial border of scapula
N: Dorsal scapular n

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Rhomboids action:

A

Retracts, elevates, and rotates scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Deltoid:

A

O: Spine of scapula, acromion, lateral 1/3 of clavicle
I: Deltoid tuberosity
N: Axillary n.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Deltoid action:

A

Abduct, flex, and extend arm, medial and lateral rotation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Supraspinatus:

A

O: Supraspinous fossa
I: Superior fact of greater tubercle
N: Suprascapular n.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Supraspinatus action:

A

Arm abduction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Infraspinatous:

A

O: Infraspinous fossa
I: Middle facet of greater tubercle
N: Suprascapular n

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Infraspinatus action:

A

Lateral rotation of arm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Teres major:

A

O: Lateral scapular border superior to inferior angle
I: Medial lip of intertubecular sulcus
N: Lower subscapular n

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Teres major action:

A

Medial rotation and adduction of arm, extends a flexed arm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Teres minor:

A

O: Lateral scapular border superior to teres major
I: Inferior facet of greater tubercle
N: Axillary n.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Teres minor action:

A

Lateral rotation of the arm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Greater tubercle - superior facet:

A

Supraspinatus muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Greater tubercle - middle facet:

A

Infraspinatus muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Greater tubercle - inferior facet:

A

Teres minor muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Lesser tubercle attachment:

A

Subscapularis muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Subscapularis:

A

O: Subscapular fossa
I: Lesser tubercle of the humerus
N: Upper AND lower subscapularis n

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Subscapularis action:

A

Medial rotation of the arm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Quadrangular Space:

A

Axillary nerve

Posterior circumflex humeral artery and vein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Triangular space:

A

Circumflex scapular artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Triangle interval:

A

Radial n.

Profunda brachii artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Pectoralis major:

A

O: Medial 1/2 of clavicle and anterior surface of sternum
I: Lateral lip of intertubercular sulcus
N: Medial and lateral pectoral nn.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Pec major actions:

A

Flexion, adduction, and medial rotation of the arm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Pectoralis minor:

A

Origin: Ribs 3-5
Insertion: Coracoid process
N: Medial pectoral n

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Pec minor actions:

A

Pulls tip of shoulder down and protracts scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Subclavius:

A

O: First rib
I: Inferior surface of clavicle
N: Nerve to subclavius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

Subclavius actions:

A

Pulls tip of shoulder down, pulls clavicle medially to stabilize sternoclavicular joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

Serratus anterior:

A

O: Anterior surface of upper 8-9 ribs
I: Costal surface of medial scapular border
N: Long thoracic n.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

Serratus anterior actions:

A

Protraction, rotation, and depression of the scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

Axilla:

A

Region between the upper thorax and the proximal humerus - contains a neurovascular bundle composed of the axillary artery and veins (and their branches), the brachial plexus, lymph nodes and fat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

Axillary inlet or apex:

A

Bounded by the first rib, coracoid process, and adjacent area of the anterior surface of the scapula, and posterior edge of clavicle. Brachial plexus and axillary vessels enter the axilla thru the apex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

Anterior wall of axilla:

A

Pec major and minor, subclavius, clavipectoral fascia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

Posterior wall of axilla:

A

Subscapularis, teres major, and latissimus dorsi

39
Q

Lateral wall of axilla:

A

Intertubercular groove of the humerus (where the anterior and posterior walls converge - pec major and teres major). Associated with the intertubercular groove are portions of the biceps brachii and coracobrachialis muscles

40
Q

Medial wall of axilla:

A

First 4 ribs with their external intercostal muscles and the superior portion of the serratus anterior

41
Q

Floor of axilla:

A

Skin and axillary fascia - concavity of the armpit due to the attachment of clavipectoral fascia, anterior and posterior axillary folds

42
Q

Axillary artery:

A

A continuation of the subclavian artery - arches over the first rib and extends to the inferior border of the teres major –> becomes the brachial artery

43
Q

1st part of axillary artery:

A

Between the first rib and the medial border of the pec minor (all are in relation to the pec minor m)

44
Q

2nd part of axillary artery:

A

Lies posterior to the pec minor m

45
Q

3rd part of axillary artery:

A

Lies between the lateral border of the pec minor m and the inferior border of the teres major m (here it changes names to the brachial artery)

46
Q

Branches from 1st part of axillary artery:

A

Superior thoracic artery: supplies the upper regions of the medial and anterior axillary walls

47
Q

Branches from the 2nd part of axillary artery:

A

Thoracoacromial trunk: 4 branches - pectoral, clavicular, acromial, deltoid, supplies the anterior axillary wall
Lateral thoracic artery: supplies the medial wall of the axilla and accompanies the long thoracic n to the serratus anterior, also supplies the breast

48
Q

Branches from 3rd part of axillary artery:

A
  1. Subscapular artery: gives rise to the circumflex scapular a. (goes thru triangular space to provide collateral circulation around the scapula) and thoracodorsal a. (major blood supply to lat dorsi, accompanies thoracodorsal n)
  2. Anterior circumflex humeral artery
  3. Posterior circumflex humeral artery: larger of the 2, accompanies the axillary n. thru the quadrangular space, supplies deltoid
49
Q

Superior thoracic artery:

A

From the 1st branch of axillary a., supplies the medial and anterior wall of axilla

50
Q

Thoracoacromial trunk:

A

From the 2nd part of axillary a., supplies anterior wall of axilla

51
Q

Lateral thoracic artery:

A

From 2nd branch of axillary artery, supplies medial wall, runs with long thoracic n. to the serratus anterior

52
Q

Subscapularis artery:

A

From 3rd branch of axillary artery, gives rise to circumflex scapular a. (collateral circulation to scapula) and thoracodorsal a. (lat dorsi)

53
Q

Anterior circumflex artery:

A

Frm 3rd branch of axillary artery

54
Q

Posterior circumflex artery:

A

From 3rd branch of axillary artery, goes through quadrangular space, deltoid

55
Q

Axillary vein is formed by:

A

The paired veins of the brachial artery joining the basilic vein

56
Q

The axillary vein is _____ to the axillary artery.

A

Medial

57
Q

Axillary vein continues as the _______ above the first rib.

A

Subclavian vein

58
Q

The ________ vein drains into the axillary vein and can be located in the deltopectoral interval.

A

Cephalic

59
Q

Somatic systems innervate:

A

Skeletal muscle and skin (receiving and responding to info from the external environment - consciously perceived and voluntarily acted upon)

60
Q

Visceral systems innervate:

A

Smooth muscles, organs, and glands (receiving and responding to info from the internal environment - unconsciously perceived and involuntarily acted upon as an autonomic response)

61
Q

Ganglia:

A

Collections of nerve cell bodies OUTSIDE the CNS (can be sensory or motor)

62
Q

Nuclei:

A

Nerve cell bodies WITHIN the CNS (can be sensory or motor)

63
Q

Dorsal rami:

A

Sensory neurons live in the dorsal root ganglia.

Dorsal rami are distributed to the muscles and skin of the back

64
Q

Ventral rami:

A

Motor, distributed to the anterior and lateral surfaces of the neck and trunk and all muscles and skin of the limbs

65
Q

Nerves from the roots:

A

Long thoracic n. (C5-C7)
Phrenic nerve (C5)
Dorsal scapular n. (C5)

66
Q

Nerves from the trunks:

A

N. to subclavius (C5,C6)

Suprascapular n. (C5,C6)

67
Q

Nerves from the divisions:

A

None

68
Q

Nerves from the LATERAL cord:

A

Lateral pectoral n. (C5-C7)
Musculocutaneous n. (C5-C7)
Lateral root of median n. (C6,C7)

69
Q

Nerves from MEDIAL cord:

A

Medial pectoral n. (C8,T1)
Medial cutaneous n. of arm (brachial cutaneous) (C8,T1)
Medial cutaneous n. of forearm (antebrachial) (C8,T1)
Median root of median n. (C8,T1)
Ulnar n. (C8, T1)

70
Q

Nerves from POSTERIOR cord:

A 
Upper subscapular n. (C5, C6)
Lower subscapular n. (C5,C6)
Thoracodorsal n. (C6-C8)
Axillary n. (C5,C6)
Radial n. (C5-T1)
71
Q

Long thoracic n.

A

C5-C7, to serratus anterior m.

Roots

72
Q

Phrenic n:

A

C5, diaphragm?

Roots

73
Q

Dorsal scapular n:

A

C5, levator scapulae and rhomboids

Roots

74
Q

N. to subclavius:

A

C5, C6

Trunks

75
Q

Suprascapular n:

A

C5, C6, to supraspinatus and infraspinatus m.

Trunks

76
Q

Lateral pectoral n:

A

C5-C7, to pec major

Lateral cord

77
Q

Lateral root of median n:

A

C6,C7, to the hand and anterior forearm

Lateral cord

78
Q

Musculocutaneous n:

A

C5-C7, motor to anterior arm and sensory to anterior forearm

Lateral cord

79
Q

Medial pectoral n:

A

C8-T1, to both pec major and minor

Medial cord

80
Q

Medial brachial cutaneous n:

A

C8,T1

Medial cord

81
Q

Medial antebrachial cutaneous n:

A

C8,T1

Medial cord

82
Q

Median root of median n:

A

C8,T1

Medial cord

83
Q

Ulnar n:

A

C8,T1, MOTOR portion to forearm and hand

Medial cord

84
Q

Upper subscapular n:

A

C5,C6, to subscapularis m

Posterior cord

85
Q

Lower subscapularis n:

A

C5,C6, to subscapularis and TERES MAJOR

Posterior cord

86
Q

Thoracodorsal n:

A

C6-C8, to the latissimus dorsi

Posterior cord

87
Q

Axillary n:

A

C5,C6, to the deltoid and teres minor

Posterior cord

88
Q

Radial n:

A

C5-T1, MOTOR to posterior arm and forearm

Posterior cord

89
Q

Breasts are centered on the anterior thoracic wall over ______ between the sternum and _____.

A

4th and 5th ribs; axilla

90
Q

Glandular tissue is formed by:

A

15-20 lobules, each of which is drained by a lactiferous duct –> empty on the nipple, each duct dilates into a lactiferous sinus deep to the areola

91
Q

Deep to the breast tissue is a loose layer of CT known as _______.

A

Retromammary tissue (allows for mobility between the breast tissue and underlying deep fascia of pec major - where BC invades and attaches to the deep fascia of pec major, breast becomes less movable - contraction of pec major will then cause breast to move superiorly). Infiltration of C along suspensory ligaments –> dimpling of skin (invasion shortens the ligaments and causes skin to invaginate)

92
Q

Blood supply to the breast:

A

Lateral thoracic a, Internal thoracic a, Pectoral branch of the Thoracoacromial a, and cutaneous branches of intercostal aa

93
Q

Innervation of the breast:

A

Lateral and anterior cutaneous branches of the 2-6th intercostal nerves - include both sensory and sympathetic fibers which supply the skin, smooth m of the areola and nipple, blood vessels, and glandular tissue.

94
Q

Lymphatic drainage of the breast:

A

The glandular tissue of the breast drains into several large collecting trunks which flow into the pectoral or apical group of axillary nodes - route for 75% of the glandular tissue, the remaining 25% of lymph drains medially into the parasternal nodes (internal thoracic a) or into the subperitoneal plexus

Anatomy (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions