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MSK > Insertions + Origins + Actions= Upper Limb > Flashcards

Insertions + Origins + Actions= Upper Limb Flashcards

1
Q

What’s the origin, insertions, function and innervation of Pectoralis major?

A

Origin: clavicular head= ant surface of medial clavicle
Sternocostal head= ant surface of sternum
Insertion: intertubercular sulcus of humerus
Function: adducts and internally rotates

Lateral and medial pectoral nerves

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2
Q

What’s the origin, insertion, function and innervation of Pectoralis minor?

A

Origin: 3rd-5th ribs
Insertion: coracoid process of scapula
Function: draws scapula annteroinferiorly against thoracic wall

Medial pectoral nerve

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3
Q

What’s the origin, insertion, function and innervation of Serratus anterior?

A

Origin: Junction of 1st rib and it’s costal cartilage
Insertion: inferior surface of middle third of clavicle
Function: anchors and depresses the clavicle

Nerve to subclavius

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4
Q

What’s the origin, insertion, function and innervation of the Trapezius?

A

Origin: skull, nuchal ligament and spinous processes
Insertion: attaches to clavicle and acromium
Function: elevates the scapula and rotates it during abduction

Accessory nerve

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5
Q

What’s the origin, insertion, function of Latissimus Dorsi?

A

Origin: spinous processes of T7-T12
Insertion: intertubercular sulcus of humerus
Function: extends, adducts + internally rotates

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6
Q

What’s the origin, insertion, function and innervation of Levator Scapulae?

A

Origin: transverse processes of C1-C4
Insertion: medial border of scapula
Function: elevates scapula

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7
Q

What’s the origin, insertion, function and innervation of the Deltoid?

A

Origin: lateral third of clavicle, acromium and spine of scapula
Insertion: deltoid tuberosity on lat aspect of humerus
Function: ant fibres= Flexion and internal rot.
post fibres= extend and external rot.
middle fibres= abductor of arm

Axillary nerve

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8
Q

What’s the origin, insertion, function and innervation of Teres Major?

A

Origin: post surface of inf angle of scapula
Insertion: medial lip of intertubercular groove of humerus
Function: adducts, extends and internal rot.

Lower subscapular nerve

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9
Q

What’s the origin, insertion, function and innervation of Supraspinatus?

A

Origin: supraspinous fossa of scapula
Insertion: greater tubercle of humerus
Function: abducts arm 0-15 degrees

Suprascapular nerve

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10
Q

What’s the origin, insertion, function and innervation of Infraspinatus?

A

Origin: infraspinous fossa of scapula
Insertion: greater tubercle of humerus
Function: external rotation

Suprascapular nerve

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11
Q

What’s the origin, insertion, function and innervation of Subscapularis?

A

Origin: subscapular fossa on costal surface
Insertion: lesser tubercle of humerus
Function: internal rotation

Upper and lower subscapular nerves

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12
Q

What’s the origin, insertion, function and innervation of Teres minor?

A

Origin: post surface of scapula adjacent to its lat border
Insertion: greater tubercle of humerus
Function: external rotation of arm

Axillary nerve

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13
Q

What’s the origin, insertion, function and innervation of Biceps brachii?

A

Origin: long head= supraglenoid tubercle of scapula
short head= coracoid process of scapula
Insertion: radial tuberosity and fascia of forearm
Function: supination of forearm and flexes arm at elbow + shoulder

Musculocutaneous nerve

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14
Q

What’s the origin, insertion, function and innervation of Coracobrachialis?

A

Origin: coracoid process of scapula
Insertion: attaches the medial side of humerus shaft at level of deltoid tubercle
Function: Flexion of arm and weak adduction

Musculocutaneous nerve

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15
Q

What’s the origin, insertion, function and innervation of Brachialis?

A

Origin: medial and lateral surfaces of humerus shaft
Insertion: ulnar tuberosity
Function: Flexion at elbow

Musculocutaneous nerve

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16
Q

What’s the origin, insertion, function and innervation of Tricpes brachii?

A

Origin: long head= infraglenoid tubercle
lateral head= humerus, superior to radial groove
medial head= humerus, inferior to radial groove
Insertion: olecranon of the ulna
Function: extension of arm at elbow

17
Q

What’s the origin, insertion, function and innervation of Flexor carpi unlnaris?

A

Origin: humeral head= medial epicondyle of humerus
ulnar head= olecranon of ulna
Insertion: pisiform bone
Function: Flexion and adduction at wrist

Ulnar nerve

18
Q

What’s the origin, insertion, function and innervation of Palmaris longus?

A

Origin: medial epicondyle
Insertion: flexor retinaculum
Function: Flexion at wrist

Median nerve

19
Q

What’s the origin, insertion, function and innervation of Flexor carpi radialis?

A

Origin: medial epicondyle
Insertion: to base of metacarpals II and III

20
Q

What’s the origin, insertion, function and innervation of Pronator Teres?

A

Origin: medial epicondyle and coronoid process of ulna
Insertion: attaches laterally to the mid shaft of radius
Function: pronates forearm

Median nerve

21
Q

What’s the origin, insertion, function and innervation of Flexor digitorum superficialis?

A

Origin: medial epicondyle of humerus and radius
Insertion: middle phalanges of four fingers
Function: flexes the MPJs and PIPJs at four fingers and flexes at wrist

Median nerve

22
Q

What’s the origin, insertion, function and innervation of Flexor digitorum profundus?

A

Origin: ulna and associated interosseous membrane
Insertion: distal phalanges of four fingers
Function: flexes the DIPJs and flexes the MPJ at wrist

Medial half (little and ring finger) - ulnar nerve
Lateral half (middle and index fingers)- median nerve
23
Q

What’s the origin, insertion, function and innervation of Flexor pollicis longus?

A

Origin: anterior surface of the radius and surrounding interosseous membrane
Insertion: to base of distal phalanx of the thumb
Function: flexes the IPJs and MCPJs of thumb

Median nerve

24
Q

What’s the origin, insertion, function and innervation of Pronator quadratus?

A

Origin: anterior surface of the ulna
Insertion: anterior surface of the radius
Function: pronates forearm

Median nerve

25
Q

What’s the origin, insertion, function and innervation of the Brachioradialis?

A

Origin: proximal aspect of lateral supracondylar ridge of humerus
Insertion: distal end of radius
Function: flexes at elbow

Radial nerve

26
Q

What’s the origin, insertion, function and innervation of Supinator?

A

Origin: humeral head= common extensor origin on lateral epicondyle
ulnar head= supinator crest on radial border of proximal shaft of ulna
Insertion: proximal radial surface of radius
Function: supinates forearm

Deep branch of radial nerve

27
Q

What’s the origin, insertion, function and innervation of the aconeus muscle?

A

Origin: lateral epicondyle
Insertion: posterior and lateral part of olecranon
Function: extends and stabilises the elbow joint

Radial nerve

28
Q

What is the origin, insertion, function and innervation of the opponens pollicis?

A

Origin: tubercle of trapezium
Insertion: lateral margin of metacarpal of thumb
Function: opposes thumb

Median nerve

29
Q

What is the origin, insertion, function and innervation of the abductor pollicis brevis?

A

Origin: tubercles of scaphoid and trapezium
Insertion: lateral side of proximal phalanx of thumb
Function: abducts thumb

Median nerve

30
Q

What is the origin, insertion, function and innervation of the flexor pollicis brevis?

A

Origin: tubercle of trapezium
Insertion: base of proximal phalanx of thumb
Function: flexes the MCPJs of thumb

Median nerve

31
Q

What is the origin, insertion, function and innervation of the Lumbricals?

A

Origin: tendons of the FDP
Insertion: extensor hood
Function: Flexion at MCPJs and extension at IPJs

32
Q

What is the origin, insertion, function and innervation of the interossei?

A

Origin: medial and lateral surfaces of the metacarpals
Insertion: extensor hood
Function: dorsal= abduction of MCPJs
palmar= addiction of MCPJs

Ulnar nerve

MSK (6 decks)

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