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ANAT 315 Term 1 > Lecture 5 > Flashcards

Lecture 5 Flashcards

1
Q

What muscles act on shoulder girdle? (5)

A

trapezius, levator scapulae, rhomboids, serratus anterior, pectoralis minor

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2
Q

Supraspinatus: origin

A

supraspinous fossa

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3
Q

Supraspinatus: insertion

A

greater tubercle of humerus

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4
Q

Supraspinatus: action

A

abduction of arm at shoulder

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5
Q

Supraspinatus: innervation

A

suprascapular nerve

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6
Q

Infraspinatus: origin

A

Infraspinous fossa

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7
Q

Infraspinatus: insertion

A

greater tubercle of humerus

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8
Q

Infraspinatus: action

A

external (lateral) rotation of arm at shoulder

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9
Q

Infraspinatus: innervation

A

suprascapular nerve

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10
Q

Teres minor: origin

A

lateral border of scapula

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11
Q

Teres minor: insertion

A

greater tubercle of humerus

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12
Q

Teres minor: action

A

external (lateral) rotation of arm at shoulder

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13
Q

Teres minor: innervation

A

axillary nerve

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14
Q

Subscapularis: origin

A

subscapular fossa

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15
Q

Subscapularis: insertion

A

lesser tubercle of humerus

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16
Q

Subscapularis: actions (2)

A

medial (internal) rotation of arm at shoulder, adducts arm at shoulder

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17
Q

Subscapularis: innervation

A

subscaplar nerve

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18
Q

Deltoid: origins (3)

A

lateral clavicle, acromion, spine of scapula

19
Q

Deltoid: insertion

A

deltoid tuberosity of humerus

20
Q

Deltoid: actions (3)

A

abduction of arm at shoulder, medial and lateral rotation of arm, flexion and extension of arm

21
Q

Deltoid: innervation

A

axillary nerve

22
Q

Coracobrachialis: origin

A

coracoid process of scapula

23
Q

Coracobrachialis: insertion

A

medial shaft of humerus

24
Q

Coracobrachialis: actions (2)

A

adduction of arm at shoulder, flexion of arm at shoulder

25
Q

Coracobrachialis: innervation

A

musculocutaneous nerve

26
Q

Which muscles are part of the rotator cuff group? (4)

A

supraspinatus, infraspinatus, teres minor, subscapularis

27
Q

Which muscles move the arm that are not part of the rotator cuff group? (5)

A

deltoid, coracobrachialis, pectoralis major, latissimus dorsi, teres major

28
Q

Biceps brachii: origins (long head and short head)

A

long head: supraglenoid tubercle of scapula
short head: coracoid process

29
Q

Biceps brachii: insertion

A

radial tuberosity

30
Q

Biceps brachii: actions (3)

A

flexes arm at forearm at elbow, abducts and medially rotates arm, supination (forearm)

31
Q

Biceps brachii: innervation

A

musculocutaneous nerve

32
Q

Brachialis: origin

A

anterior humerus

33
Q

Brachialis: insertions (2)

A

ulnar tuberosity and coranoid process

34
Q

Brachialis: action

A

flexes forearm at elbow

35
Q

Brachialis: innervation

A

musculocutaneous and radial nerves

36
Q

Brachioradialis: origin

A

lateral supracondylar ridge (proximal 2/3)

37
Q

Brachioradialis: insertion

A

styloid process of radius

38
Q

Brachioradialis: action

A

flexes forearm at elbow joint

39
Q

Brachioradialis: innervation

A

radial nerve

40
Q

Triceps brachii: origins (long head, lateral head, medial head)

A

long head: scapula
lateral head: humerus
medial head: humerus

41
Q

Triceps brachii: insertion

A

olecranon of ulna

42
Q

Triceps brachii: actions (2)

A

extends and adducts arm, extends forearm

43
Q

Triceps brachii: innervation

A

radial nerve

ANAT 315 Term 1 (9 decks)

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