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MSK Exam 1 > Upper Extremity Myology > Flashcards

Upper Extremity Myology Flashcards

1
Q

Pectoralis Major M.

A
  • Clavicular Head - Medial 1/2 of Clavicle
  • Sternocostal Head - Anterior surface of Sternum, Costal Cartilages 1-6; Aponeurosis External Abdominal Oblique M.
  • Lateral Edge of Intertubercular Groove of Humerus
  • Adduct & Medially rotate Humerus; Protract and Depress Scapula; Clavicular Head flexes Humerus; Sternocostal Head extends Humerus
  • Lateral and Medial Pectoral N.
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2
Q

Pectoralis Minor M.

A

Medial aspect of ribs 3-5

Coracoid Process of Scapula

Stabilize Scapula by protracting and depressing it against Thoracic Wall

Medial Pectoral N.

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3
Q

Subclavius M.

A

Upper border of 1st rib and 1st Costal Cartilage

Inferior Aspect of Clavicle

Positions and depresses clavicle

Nerve to the Subclavius M.

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4
Q

Serratus Anterior M.

A

Lateral External Surface of Ribs 1-8

Anterior Surface of Medial Border of Scapula

Protracts Scapula (Stabilizing against Thoracic Wall); Rotates Glenoid Cavity Superiorly

Long Thoracic N.

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5
Q

Deltoid M.

A

Lateral 1/3 of Clavicle; Scapular Spine; Acromion

Deltoid Tuberosity of Humerus

Anterior: Flex & Medially Rotate Humerus; Medial: Abduct Humerus; Posterior: Extend and Laterally Rotate Humerus

Axillary N.

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6
Q

Subscapularis M.

A

Medial aspect of Subscapular Fossa

Lesser Tubercle of Humerus

Medially Rotate and Adduct Humerus; Holds Humeral Head in Glenoid Cavity

Upper and Lower Subscapular N.

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7
Q

Supraspinatus M.

A

Supraspinous Fossa of Scapula

Greater Tubercle of Humerus

With Deltoid M. Abduct the Humerus; Holds Humeral Head in Glenoid Cavity

Suprascapular N.

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8
Q

Infraspinatus M.

A

Infraspinous Fossa of Scapula

Greater Tubercle of Humerus

Laterally Rotate Humerus; Holds Humeral Head in Glenoid Cavity

Suprascapular N.

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9
Q

Teres Minor M.

A

Middle part of Lateral Border of Scapula

Greater Tubercle of Scapula

Laterally Rotates Humerus; Holds Humeral Head in Glenoid Cavity

Axially N.

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10
Q

Teres Major M.

A

Posterior Aspect of the Inferior Angle Scapula

Medial Edge of Intertubercular Groove

Adduct and Medially Rotate Humerus

Lower Subscapular N.

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11
Q

Biceps Brachii M.

A

Long Head: Supraglenoid Tubercle of Scapula

Short Head: Coracoid Process of Scapula

Radial Tuberosity and Antebrachial Fascia as Bicipital Aponeurosis

Flex Humerus, Flex supine Forearm and Supinate the Forearm, Short Head resists dislocation of shoulder

Musculocutaneous N.

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12
Q

Coracobrachialis M.

A

Coracoid Process of Scapula

Medial aspect of Humeral Body

Flex and Adduct Humerus

Musculocutaneous N.

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13
Q

Brachialis M.

A

Distal half of anterior aspect of Humeral Body

Ulnar Tuberosity and Coronoid Process

Flex Forearm

Musculocutaneous N.

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14
Q

Triceps Brachii M.

A

Long Head: Infraglenoid Tubercle of Scapula

Medial Head: Posterior aspect of Humeral Body, inferior to Radial Groove

Lateral Head: Posterior aspect of Humeral Body, superior to Radial Groove

Olecranon of Ulna and Antebrachial Fascia

Extend Forearm, Long Head resists dislocation of Shoulder

Radial N.

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15
Q

Anconeus M.

A

Lateral Humeral Epicondyle

Lateral Aspect of Olecranon

With Triceps Brachii M., Extends Forearm, Stabilizes Elbow Joint

Radial N.

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16
Q

Pronator Teres M. (Superficial)

A

Humeral Head: Medial Humeral Epicondyle

Ulnar Head: Coronoid Process of Ulna

Lateral aspect of Radius

Pronate and Flex Forearm

Median N.

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17
Q

Flexor Carpi Radialis M. (Superficial)

A

Medial Humeral Epicondyle

Ventral aspect of Base of 2nd Metacarptal

Flex Forearm, Flex and Abduct Hand at the Wrist

Median N.

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18
Q

Palmaris Longus M. (Superficial)

A

Medial Humeral Epicondyle

Palmar Aponeurosis, Flexor Retinaculum

Flex Forearm, Flex Hand and Tenses Palmar Aponeurosis

Median N.

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19
Q

Flexor Carpi Ulnaris M. (Superficial)

A

Humeral Head: Medial Humeral Epicondyle

Ulnar Head: Olecranon and Posterior Ulna

Pisiform, Hook of the Hamate, and Base of the 5th Metacarpal

Flex Forearm, Flex and Adduct Hand at the Wrist

Ulnar N.

20
Q

Flexor Digitorum Superficialis M. (Intermediate)

A

Humeroulnar Head: Medial Humeral Epicondyle & Coronoid Process of Ulna

Radial Head: Superior half of anterior aspect of Radius

Bifed insertion on Intermediate Phalanges of Digits 2-5

Flex Forearm, Flex Hand at Wrist, Flex Proximal and Intermediate Phalanges of Digits 2-5 at MCP and PIP Joints, Respectively

Median N.

21
Q

Flexor Digitorum Profundus M. (Deep)

A

Proximal Ulna and Interosseous Membrane

Ventral Aspect of Bases of Distal Phalanges of Digits 2-5

Flex Hand at Wrist, Flex all Phalanges of Digits 2-5 at MCP, PIP, and DIP joints

Lateral Part: Anterior Interosseous N. (of Medial N.)

Medial Part: Ulnar N.

22
Q

Flexor Pollicis Longus M. (Deep)

A

Anterior aspect of Radius and Interosseous Membrane

Ventral aspect of Base of Distal Phalanx of Pollux

Flex Hand, Flex and Abduct 1st Metacarpal at 1st CMC Joint, Flex both phalanges of Pollux at Intercarpal Joint

Anterior Interosseous N. (of Median N.)

23
Q

Pronator Quadratus M. (Deep)

A

Anterior aspect of Distal Ulna

Anterior Aspect of Distal Radius

Pronate Forearm, deep fibers hold Ulna and Radius together

Anterior Interosseous N. (of Median N.)

24
Q

Brachioradialis M. (Superficial)

A

Lateral Humeral Supracondylar Ridge

Lateral Aspect of Distal Radius

Flex Forearm (most force when Forearm is Midpronated)

Radial N.

25
Q

Extensor Carpi Radialis Longus M. (Superficial)

A

Lateral Humeral Supracondylar Ridge

Dorsal aspect of Base of 2nd Metacarpal

Extend and Abduct Hand at Wrist

Radial N.

26
Q

Extensor Carpi Radialis Brevis M. (Superficial)

A

Lateral Humeral Epicondyle

Dorsal aspect of Base of 3rd Metacarpal

Extend and Abduct Hand at Wrist

Deep Radial N.

27
Q

Extensor Digitorum M. (Superficial)

A

Lateral Humeral Epicondyle

Extensor Expansions of Digits 2-5

Extend Hand at the Wrist, extend all Phalanges of Digits 2-5 at MCP, PIP, and DIP Joints

Posterior Interosseous N.

28
Q

Extensor Digiti Minimi M. (Superficial)

A

Lateral Humeral Epicondyle

Extensor Expansion of Digit 5

Extend all phalanges of Digit 5 at MCP, PIP, and DIP joints

Posterior Interosseous N.

29
Q

Extensor Carpi Ulnaris M. (Superficial)

A

Lateral Humeral Epicondyle

Dorsal Aspect of Base of 5th Metacarpal

Extend and Adduct Hand at Wrist

Posterior Interosseous N.

30
Q

Supinator M. (Deep)

A

Lateral Humeral Epicondyle, Radial Collateral L. of Elbow, Annular L. of Proximal Radioulnar Joint, Supinator Crest, and Supinator Fossa of the Ulna

Proximal Aspect of Radial Body

Supinate Forearm

Deep Radial N.

31
Q

Extensor Indicis M. (Deep)

A

Posterior aspect of distal Ulna and Interosseous Membrane

Extensor Expansion of Digit 2

Extend Hand at Wrist, Extend 2nd Digit

Posterior Interosseous N.

32
Q

Abductor Pollicis Longus M. (Outcropping of Deep)

A

Posterior aspect of proximal Ulna, Radius, and Interosseous Membrane

Base of 1st Metacarpal

Abduct Hand at Wrist, Abduct Pollux at CMC Joint

Posterior Interosseous N.

33
Q

Extensor Pollicis Longus M. (Outcropping of Deep)

A

Posterior aspect of Ulna and Interosseous Membrane

Dorsal aspect of the Base of the Distal Phalanx of the Pollux

Abduct Hand at Wrist, Extend 1st Metacarpal, Proximal and Distal Phalanges of Pollux at CMC, MCP, and IP Joints

Posterior Interosseous N.

34
Q

Extensor Pollicis Brevis M. (Outcropping of Deep)

A

Posterior aspect of Radius and Interosseous Membrane

Dorsal aspect of Base of Proximal Phalanx of Pollux

Abduct hand, Extend 1st Metacarpal and Proximal Phalanges of Pollux at CMC and MCP joints

Posterior Interosseous Joints

35
Q

Abductor Pollicis Brevis M. (Thenar)

A

Tubercles of Scaphoid and Trapezium bones and Flexor Retinaculum

Lateral aspect of Base of Proximal Phalanx of Pollux

Abduct Pollux, aids in Opposition

Recurrent Branch of Median N.

36
Q

Opponens Pollicis M. (Thenar)

A

Tubercles of Scaphoid and Trapezium bones and Flexor Retinaculum

Lateral aspect of 1st Metacarpal

Oppose Pollux

Recurrent Branch of Median N.

37
Q

Flexor Pollicis Brevis M. (Thenar)

Superficial and Deep Head

A

Tubercles of the Scaphoid and Trapezium bones and Flexor Retinaculum

Lateral aspect of Base of Proximal Phalanx of Pollux

Flex 1st Metacarpal and Proximal Phalanges of Pollux at CMC and MCP Joints

Superficial Head: Recurrent Branch of Median N.

Deep Head: Deep Ulnar N.

38
Q

Adductor Pollicis M. (Thenar)

Oblique and Transverse Heads

A

Capitate and Bases of 2nd and 3rd Metacarpal Bones

Anterior Aspect of Body of 3rd Metacarpal Bones

Medial aspect of Proximal Phalanx of Pollux

Adduct Pollux

Deep Ulnar N.

39
Q

Abductor Digiti Minimi M. (Hypothenar)

A

Pisiform Bone

Medial aspect of Base of Proximal Phalanx of 5th Digit

Abduct 5th digit

Deep Ulnar N.

40
Q

Flexor Digiti Minimi M. (Hypothenar)

A

Hook of Hamate bone and Flexor Retinaculm

Medial aspect of Base of Proximal Phalanx of 5th Digit

Flex Proximal Phalanx of 5th Digit

Deep Ulnar N.

41
Q

Opponens Digiti Minimi M. (Hypothenar)

A

Hook of Hamate bone and Flexor Retinaculum

Medial Aspect of 5th Metacarpal

Oppose 5th Digit

Deep Ulnar N.

42
Q

1st and 2nd Lumbrical M. (Intermediate)

A

Lateral side of lateral 2 FDP tendons as Unipennate muscles

Radial aspect of Extensor Expansions of 2nd and 3rd Digits

Flex Proximal Phalanges of 2nd and 3rd Digits at MCP Joint, Extend Intermediate and Distal Phalanges of 2nd and 3rd Digits by tightening extensor expansion

Median N.

43
Q

3rd and 4th Lumbrical M. (Intermediate)

A

Between medial 3 FDP tendons as Bipennate muscles

Radial aspect of the Extensor Expansions of 4th and 5th Digits

Flex Proximal Phalanges of 4th and 5th Digits at MCP joint, Extend Intermediate and Distal Phalanges of the 4th and 5th Digits by tightening extensor expansion

Deep Ulnar N.

44
Q

Dorsal Interossei M. (1-4) (DAB)

A

Adjacent sides of two Metacarpals as Bipennate muscles

Bases of Proximal Phalanges and Extensor Expansion of Digits 2-4

Abduct Digits 2-4, flex Proximal Phalanges at MCP Joint, Extend Intermediate and Distal Phalanges by tightening extensor expansion

Deep Ulnar N.

45
Q

Palmar Interossei M. (1-3) (PAD)

A

Palmar aspect of 2nd, 4th, and 5th Metacarpal bones

Bases of Proximal Phalanges and Extensor Expansions 2nd, 4th, and 5th Digits

Adduct 2nd, 4th, and 5th Digits, flex Proximal Phalanges of 2nd, 4th, and 5th digits at MCP joint, Extend Intermediate and Distal Phalanges of 2nd, 4th, and 5th Digits by tightening extensor expansion

Deep Ulnar N.

MSK Exam 1 (16 decks)

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