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General Anatomy > Muscles > Flashcards

Muscles Flashcards

1
Q

Which nerve innervates the supraspinatus m.?

A

Suprascapular n. (C5,6)

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2
Q

What is the origin of the Supraspinatus m.?

A

Superior scapula

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3
Q

What is the insertion of the supraspinatus m.?

A

Sup. Facet of greater tuberosity of humerus

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4
Q

What is the action of the supraspinatus m?

A

Abduction, first 30°, then over 90°

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5
Q

What nerve innervates the infraspinatus m.?

A

Suprascapular n.(C5,6)

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6
Q

What is the origin of the infraspinatus m?

A

Inferior scapula

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7
Q

What is the insertion of the infraspinatus m?

A

Middle facet of greater tuberosity (back of humerus)

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8
Q

What is the action of the infraspinatus m?

A

External rotation (primary)

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9
Q

What nerve innervates the teres minor m.?

A

Axillary n. (C5,6)

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10
Q

What is the origin of the teres minor m?

A

Lateral border of scapula

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11
Q

What is the insertion of the teres minor m?

A

Inferior facet of greater tuberosity (back ofhumerus)

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12
Q

What are the two actions of the teres minor m.

A 
Adduction (primary)
External rotation (secondary)
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13
Q

Which nerve innervates the subscapularis m?

A

Upper & lower subscapular n. (C5,6)

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14
Q

What is the origin of the subscapularis m.?

A

Anterior scapula

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15
Q

What is the insertion of the subscapularis m?

A

Lesser tuberosity (medial side of humerus)

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16
Q

Which rotator cuff muscle is responsible for internal rotation?

A

Subscapularis

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17
Q

Which nerve innervates the Latissimus Dorsi m.?

A

Thoracodorsal (C6,7,8)

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18
Q

What is the origin of the Latissimus Dorsi m.?

A

Iliac crest, inferior 4 ribs, spinous T6 to sacrum

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19
Q

What is the insertion of the Latissimus Dorsi m.?

A

Floor of intertuberculer groove (on humerus)

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20
Q

Which N. Innervates the serratus anterior m?

A

Long thoracic (C5,6,7) SALT

21
Q

What is the insertion of the serratus anterior m.?

A

Anterior + medial surface of vertebral border of scapula

22
Q

Which muscle protracts the shoulder?

A

Serratus anterior

23
Q

Damage to what nerve causes winging of scapula?

A

Long thoracic (C5,6,7)

24
Q

Damage to what nerve causes flaring of the scapula?

A

Dorsal scapular (C5)

25
Q

Which nerve innervates both rhomboid minor and major?

A

Dorsal scapular (C5)

26
Q

What is the origin of the rhomboid minor m.?

A

SPs, C7-T1

27
Q

Where is the origin of the rhomboid major m?

A

SPs, T2-T5

28
Q

What is the insertion point of both rhomboid major and minor?

A

Medial border of scapula

29
Q

Which muscles adduct and retract the scapula?

A

Rhomboid minor and major

30
Q

Which nerve innervates the deltoid m?

A

Axillary (C5,6)

31
Q

Where does the deltoid m. Originate?

A

Around AC joint

32
Q

Where does the deltoid m. Insert?

A

Deltoid tuberosity of humerus

33
Q

Which shoulder m. Abducts, adducts, flexes, and extends the shoulder?

A

Deltoid m

34
Q

Which nerve innervates the Levator scapulae m.?

A

Dorsal scapular (C5,6)

35
Q

What is the origin of the Levator scapulae?

A

TPs of C1-C4

36
Q

What is the insertion of the Levator scapulae?

A

Superior/medial border of scapula

37
Q

Which muscle elevates the scapula only?

A

Levator Scapulae

38
Q

Which muscle elevates, depresses, and retracts the scapula?

A

Trapezius

39
Q

Which 2 nerves innervate the trapezius?

A

CN XI

C3,4

40
Q

Where does the trapezius m. originate?

A

Medial superior nuchal line, EOP, ligamentum nuchae, SPs C7-T12

41
Q

Where does the trapezius m. Insert?

A

Lateral 1/3 clavicle, acromion, spine of scapula

42
Q

Which nerves innervate the Pec. Major m.?

A

Medial (C8,T1) & lateral (C5,6,7) pectoral nerves

43
Q

Where is the origin of the clavicular head of the pec. major m.?

A

Anterior surface med 1/3 clavicle

44
Q

Where is the origin of the sternal head of the pec. major m.?

A

Manubrium & body of sternum

45
Q

Where is the origin of the abdominal head of the pec. major m.?

A

Costal cartilages of ribs 2-6

46
Q

Where is the insertion for pec. major?

A

Lateral lip of intertubercular groove

47
Q

Which muscle flexes, adducts, and internally rotates humerus at shoulder joint?

A

Pec major

48
Q

Which nerve innervates the Pec. Minor?

A

Medial pectoral N

49
Q

Where does pec. minor originate?

A

3-5th ribs

General Anatomy (1 decks)

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