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Anatomy > the shoulder and arm > Flashcards

the shoulder and arm Flashcards

1
Q

what is the origin and insertion of the trapezius muscle?

A

o - occipital bone and spinous processes of vertebra C1-T12

I- acromium process and spine of scapula

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2
Q

what is the function of the trapezius muscle?

A

rotation, retraction, elevation and depression of scapula also extension of the head.

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3
Q

what is the origin and insertion of the latissimus dorsi?

A

o - vertebrae T7 - L5

I- humerus

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4
Q

what is the function of latissimus dorsi?

A

adducts, extends and laterally rotates arm.

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5
Q

what is the origin and insertion of the levator scapulae?

A

o - C1-C4 vertebrae

I - medial border of scapula

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6
Q

what is the function of the levator scapulae?

A

it elevates scapula and tilts scapulas glenoid cavity inferiorly by rotating scapula.

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7
Q

what is the origin and insertion of the rhomboid major?

A

origin - c7 - t1

I - medial border of the scapula

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8
Q

what is thee function of the rhomboid minor?

A

retracts and rotates scapula, fixes scapula to thoracic wall.

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9
Q

what is the origin and insertion of the supraspinatus?

A

o - supraspinous fossa of scapula

I - greater tubercle of humerous.

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10
Q

what is the function of the supraspinatous?

A

abduction of arm.

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11
Q

what is the origin and insertion of infraspinatous?

A

origin - infraspinous fossa of scapula

insertion - greater tubercle of humerous

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12
Q

what is the function of the infraspinatous?

A

lateral rotation of arm and stabalisation of humerous

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13
Q

what is the origin and insertion of teres major?

A

o - inferior angle of scapula

i - humerous

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14
Q

what is the function of teres major

A

adduction of humerus, medial rotation, extention of humerus from flexed position.

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15
Q

what is the origin and insertion of teres minor?

A

o- lateral border of scapula

i - humerous

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16
Q

what is the function of teres minor?

A

lateral rotation of the arm

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17
Q

what is the origin and insertion of pectoralis major?

A

clavicular and sternocostal head

i- humerus

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18
Q

what is the function of pectoralis major?

A

adduction and medial rotation of humerus

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19
Q

what is the origin and insertion of pectoralis minor?

A

o - third to fifth ribs

i - caracoid process of scapula

20
Q

what is the function of pectoralis minor?

A

it stabalises the scapula by drawing it inferiorly and anteriorly against thoracic wall

21
Q

what is the origin and insertion of the serratus anterior?

A

o - outer surface of upper 8 or 9 ribs

i - medial margin of scapula

22
Q

what is the function of serratus anterior?

A

protects and stabalises the scapula

23
Q

what is the origin and insertion of subscapularis?

A

o - subscapular fossa

i - lesser tubercle of humerus

24
Q

what is the function of subscapularis?

A

medial rotation of humerus

25
Q

what is the origin and insertion of the biceps brachii?

A

o- short head- caracoid process
long head - supragelnoid tubercle
i - radial tuberosity

26
Q

what is the artery and nerve supply to biceps brachii?

A

brachial artery and musculocutaneous nerve

27
Q

what is the function of biceps brachii?

A

flexes elbow, flexes and abducts shoulder and supinates

28
Q

what is the origin and insertion of the coraco-brachialis?

A

o - caracoid process

i - medial humerus

29
Q

what is the arterial and nerve supply to the coraco-brachialis?

A

brachial artery and musculocutaneous nerve

30
Q

what is the function of coraco-brachialis?

A

adduction of humerus, flexion of the arm at glenohumeral joint

31
Q

what is the origin and insertion of the brachialis?

A

o - anterior surface of humerus

i - glenoid cavity

32
Q

what is the arterial and nerve supply?

A

radial recurrent artery

musculocutaneus nerve

33
Q

what is the function of the brachialis?

A

flexion at the elbow joint

34
Q

where does the musculocutaneus nerve arise from?

A

arises from brachial plexus

35
Q

where does the brachial artery arise from?

A

it is a continuation of the axillary artery beyond the lower margin of teres major

36
Q

where does the median nerve originate from?

A

from the brachial plexus

37
Q

what nerve is effected by carpal tunnel syndrome?

A

the median nerve, it is the only nerve to pass through the carpal tunnel, when it is pressed = carpal tunnel syndrome

38
Q

what is the origin and insertion of the deltoid muscle?

A

o - clavicle, acromium and spine of scapula

i - humerus

39
Q

what is the nerve supply to the deltoid muscle?

A

axillary nerve

40
Q

what is the function of the deltoid muscle?

A

abduction of shoulder, flexion and extension

41
Q

what is the origin and insertion of the triceps?

A 
o:
long head - infraglenoid tubercle of scapula
lateral head - above radial sulcus
medial head - below radial sulcus
i - ulna
42
Q

what is the arterial and nerve supply of the triceps brachii?

A

deep brachial artery and radial nerve

43
Q

what is the function of the triceps brachii?

A

extension of forarm

long head - extends, adducts arm, extends shoulder

44
Q

what is the supraglenoid tubercle?

A

small rough projection superior to glenoid cavity near the base of the caracoid process

45
Q

what is the infraglenoid tubercle?

A

region of scapula, lateral part of scapula inferior to glenoid cavity

46
Q

where does the radial nerve originate from?

A

brachial plexus

47
Q

where does the axillary nerve originate from?

A

brachial plexus

Anatomy (12 decks)

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