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Anatomy B > Upper Limb Muscles - Origins and Insertions > Flashcards

Upper Limb Muscles - Origins and Insertions Flashcards

Origins and insertions of the shoulder joints, elbow, and wrist

1
Q

What are the 7 muscles connecting the axial skeleton to the shoulder girdle?

A

1) Trapezius
2) Levator Scapulae
3) Sternocleidomastoid
4) Rhomboids
5) Serratus Anterior
6) Pectoralis Minor
7) Subclavius

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2
Q

What is the origin and insertion of the Trapezius?

A

Origin: External occipital protuberance, nuchal ligament and spinous processes of vertebrae C1 to T12
Insertion: Top of lateral clavicle (upper fibers), scapular spine (middle and lower fibers)

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3
Q

What is the origin and insertion of Levator Scapulae?

A

Origin: Transverse process of C1 to C4 vertebrae
Insertion: Upper part of medial border of scapula

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4
Q

What is the origin and insertion of Sternocleidomastoid?

A

Origin: Manubrium of the sternum and top of medial end of the clavicle
Insertion: Mastoid process of the temporal bone

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5
Q

What is the origin and insertion of Rhomboid Minor?

A

Origin: Spinous process of C7 and T1 vertebrae
Insertion: Medial border of scapula

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6
Q

What is the origin and insertion of Rhomboid Major?

A

Origin: Spinous process of T2 to T5
Insertion: Medial border of scapula

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7
Q

What is the origin and insertion of Serratus Anterior?

A

Origin: Ribs 1 to 8 and their intercostal spaces
Insertion: Front of whole of the medial border of the scapula

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8
Q

What is the origin and insertion of Pectoralis Minor?

A

Origin: Ribs 3 to 5
Insertion: Coracoid process of the scapula

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9
Q

What is the origin and insertion of Subclavius?

A

Origin: First costal cartilage
Insertion: A groove on the underside of the clavicle

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10
Q

What are the 2 muscles connecting the axial skeleton to the humerus?

A

1) Latissimus Dorsi

2) Pectoralis Major

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11
Q

What is the origin and insertion of the Latissimus Dorsi?

A

Origin: Spinous process of verterbae from T7 down, the sacrum, and the iliac crest
Insertion: Front of proximal shaft of the humerus

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12
Q

What is the origin and insertion of Pectoralis Major?

A

Origin: Medial third of the clavicle, and sternum
Insertion: Lateral lip of the intertubercular groove of the humerus

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13
Q

What are the 2 muscles that connect the shoulder girdle to the humerus (excluding rotator cuff muscles)?

A

1) Teres Major

2) Deltoid

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14
Q

What is the origin and insertion of Teres Major?

A

Origin: Lateral border of scapula
Insertion: Medial part of proximal shaft of the humerus

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15
Q

What is the origin and insertion of Deltoid?

A

Origin: Lateral clavicle (anterior fibers), acromion (lateral fibers), spine of scapula (posterior fibers)
Insertion: Deltoid tuberosity of the humerus

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16
Q

Name the 4 rotator cuff muscles.

A

1) Supraspinatus
2) Infraspinatus
3) Teres Minor
4) Subscapularis

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17
Q

What is the origin and insertion of the Supraspinatus?

A

Origin: Supraspinatus fossa
Insertion: Greater tubercle of the humerus

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18
Q

What is the origin and insertion of the Infraspinatus?

A

Origin: Infraspinatus fossa
Insertion: Greater tubercle of the humerus

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19
Q

What is the origin and insertion of Teres Minor?

A

Origin: Lateral border of the scapula
Insertion: Greater tubercle of the humerus (lowest of the three facets on the greater tubercle)

20
Q

What is the origin and insertion of Subscapularis?

A

Origin: Subscapular fossa
Insertion: Lesser tubercle of the humerus

21
Q

What is the origin and insertion of Coracobrachialis?

A

Origin: Coracoid process of the scapula
Insertion: Shaft of the humerus (about half way down)

22
Q

What are the 2 muscles connecting the shoulder girdle to the forearm (thus acting on both the shoulder and the elbow)?

A

1) Long head of triceps brachii

2) Biceps Brachii (both heads)

23
Q

What is the origin and insertion of Biceps Brachii (long head & short head)?

A

Origin: Short head - Coracoid Process, Long head - Supraglenoid Tubercle of Scapula
Insertion: Radial Tuberosity and deep fascia of forearm via bicipital aponeurosis

24
Q

What is the origin and insertion of Brachialis?

A

Origin: Anterior, lower half of humeral shaft
Insertion: Ulnar Tuberosity

25
Q

What is the origin and insertion of Triceps Brachii (all heads)?

A

Origin: Long head - Infraglenoid Tubercle, Lateral head - Proximal humeral shaft, Medial head - Humeral shaft, (distal and medial to lateral head)
Insertion: Olecranon process of Ulna

26
Q

What is the origin and insertion of Anconeus?

A

Origin: Lateral epicondyle of humerus
Insertion: Back of proximal Ulna

27
Q

What are the muscles of the anterior compartment of the Arm?

A

Biceps brachii, coracobrachialis and brachialis

28
Q

What are the muscles of the posterior compartment of the Arm?

A

Triceps brachii and anconeus

29
Q

What is the origin and insertion of Flexor Carpi Ulnaris (FCU)?

A

Origin: Medial Epicondyle of Humerus
Insertion: Pisiform, and then via ligaments to 5th metacarpal and the hook of hamate

30
Q

What is the origin and insertion of Flexor Carpi Radialis (FCR)?

A

Origin: Medial Epicondyle of Humerus
Insertion: Front of the base of the 2nd and 3rd metacarpals

31
Q

What is the origin and insertion of Extensor Carpi Ulnaris (ECU)?

A

Origin: Lateral Epicondyle of Humerus
Insertion: Dorsal aspect of the 5th metacarpal

32
Q

What is the origin and insertion of Extensor Carpi Radialis Longus (ECRL)?

A

Origin: Lateral supracondylar ridge of the humerus
Insertion: Dorsal aspect of base of 2nd metacarpal

33
Q

What is the origin and insertion of Extensor Carpi Radialis Brevis (ECRB)?

A

Origin: Lateral epicondyle of Humerus
Insertion: Dorsal aspect of base of the 3rd metacarpal

34
Q

What is the origin and insertion of Palmaris Longus (PL)?

A

Origin: Medial epicondyle of Humerus
Insertion: Flexor retinaculum of the wrist and palmar aponeurosis

35
Q

What are the origins and insertions for Extensor Digitorum (ED) and Extensor Digiti Minimi (EDM)? *note they are the same.

A

Origin: Lateral epicondyle of Humerus
Insertion: Dorsal aspect of base of proximal phalanx and loosely into the extensor expansion of digits 2-5

36
Q

What is the origin and insertion of Extensor Indicis (EI)?

A

Origin: Posterior of the distal Ulnar
Insertion: Via a tendon to the extensor expansion of the index finger

37
Q

What is the origin and insertion of Extensor Pollicis Longus (EPL)?

A

Origin: Posterior of middle third of Ulna
Insertion: Dorsal aspect of base of distal phalanx of the thumb

38
Q

What is the origin and insertion of Extensor Pollicis Brevis (EPB)?

A

Origin: Posterior of radius and interosseous membrane
Insertion: Dorsal aspect of base of proximal phalanx of the thumb

39
Q

What is the origin and insertion of Abductor Pollicis Longus (APL)?

A

Origin: Posterior of the middle third of the radius and interosseous membrane
Insertion: Radial side of the base of the 1st (thumbs) metacarpal

40
Q

What is the origin and insertion of Brachioradialis?

A

Origin: Lateral supracondylar ridge of humerus
Insertion: Just proximal to the radial styloid process

41
Q

What is the origin and insertion of Flexor Digitorum Superficialis (FDS)?

A

Origin: Medial epicondyle of Humerus, and a slip form the proximal Ulna
Insertion: Middle phalanx of digits 2-5

42
Q

What is the origin and insertion of Flexor Digitorum Profundus (FDP)?

A

Origin: Deep surface of the anterior forearm
Insertion: Anterior of the base of the distal phalanx of digits 2-5

43
Q

What is the origin and insertion of Flexor Pollicis Longus (FPL)?

A

Origin: Deep surface of the anterior forearm
Insertion: Anterior of the base of the distal phalanx of the thumb

44
Q

What is the origin and insertion of Pronator Teres?

A

Origin: Medial supracondylar ridge of the Humerus and proximal Ulna
Insertion: Lateral mid-shaft of radius

45
Q

What is the origin and insertion of Supinator?

A

Origin: Lateral epicondyle and radial side of proximal Ulna
Insertion: Anterior side of radius, mid-shaft

46
Q

What is the origin and insertion of Pronator Quadratus?

A

Origin: Distal front of ulna
Insertion: Distal front of radius

Anatomy B (8 decks)

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