Limb Flashcards

1
Q

Deltoideus

A

Origin: Spine and acromion of scapula
Insertion: Deltoid tuberosity of humerus
Innervation: Axillary nerve
Action: Flexes the shoulder

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2
Q

Infraspinatus

A

Origin: Infraspinous fossa
Insertion: Greater tubercle of humerus
Innervation: Suprascapular nerve
Action: Extends and flexes the shoulder

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3
Q

Teres Minor

A

Origin: Infraglenoid tubercle and distal third of the caudal border of the scapula
Insertion: Teres minor tuberosity of humerus
Innervation: Axillary nerve
Action: Flexes shoulder, rotates laterally, prevents medial rotation during weight bearing

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4
Q

Supraspinatus

A

Origin: Supraspinous fossa
Insertion: Greater tubercle of humerus
Innervation: Suprascapular nerve
Action: Extends shoulder and stabilizes

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5
Q

Subscapularis

A

Origin: Subscapular fossa
Insertion: Lesser tubercle of humerus
Innervation: Subscapular and Axillary nerves
Action: Extends, adducts, and medially stabilizes shoulder

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6
Q

Teres Major

A

Origin: Caudal scapula border and angle
Insertion: Teres major tuberosity of humerus
Innervation: Axillary nerve
Action: Flexes shoulder, allows medial rotation, prevents lateral rotation

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7
Q

Coracobrachialis

A

Origin: Coracoid process of scapula
Insertion: Lesser tubercle of humerus
Innervation: Musculocutaneous nerve
Action: Extends shoulder, adducts limb, stabilizes shoulder

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8
Q

Tensor Fasciae Antebrachii

A

Origin: Fascia covering lateral side of latissimus dorsi
Insertion: Olecranon
Innervation: Radial nerve
Action: Extends elbow

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9
Q

Triceps Brachii (Long Head)

A

Origin: Caudal scapula border
Insertion: Olecranon tuber
Action: Extends elbow, flexes shoulder

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10
Q

Triceps Brachii (Lateral Head)

A

Origin: Deltoid tuberosity
Insertion: Olecranon tuber
Action: Extends elbow

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11
Q

Triceps Brachii (Accessory Head)

A

Origin: Neck of humerus
Insertion: Olecranon tuber
Action: Extends elbow

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12
Q

Triceps Brachii (Medial Head)

A

Origin: Proximal humerus (medial) near teres major tuberosity
Insertion: Olecranon tuber
Action: Extends elbow
Innervation: Radial nerve

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13
Q

Anconeus

A

Origin: Supracondylar crest and epicondyles of humerus
Insertion: Lateral olecranon
Innervation: Radial nerve
Action: Extends elbow, prevents capsule compression during extension

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14
Q

Biceps Brachii

A

Origin: Supraglenoid tubercle
Insertion: cranial aspect of proximal medial radius/ulna (ulnar and radial tuberosities)
Innervation: Musculocutaneous nerve
Action: Extends shoulder, flexes elbow, stabilizes carpus

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15
Q

Brachialis

A

Origin: Proximal lateral humerus
Insertion: Proximal medial radius/ulna
Innervation: Musculocutaneous nerve
Action: Flexes elbow

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16
Q

Extensor Carpi Radialis

A

Origin: Lateral supracondylar crest
Insertion: Proximodorsal surface of Metacarpals II & III
Innervation: Radial nerve
Action: Extends carpus

17
Q

Common Digital Extensor

A

Origin: Lateral epicondyle of humerus
Insertion: extensor processes of all distal phalanges of digits II–V
Innervation: Radial nerve
Action: Extends carpus and digits

18
Q

Lateral Digital Extensor

A

Origin: Lateral epicondyle of humerus
Insertion: Proximal end of all phalanges of digits III–V
Innervation: Radial nerve
Action: Extends carpus and joints of digits III–V

19
Q

Ulnaris Lateralis (Extensor Carpi Ulnaris)

A

Origin: Lateral epicondyle of humerus
Insertion: Accessory carpal bone and lateral aspect of metacarpal IV
Innervation: Radial nerve
Action: Abducts and flexes carpal joints and supports the carpus when extended

20
Q

Supinator

A

Origin: lateral epicondyle of the humerus
Insertion: proximal cranial surface of radius
Innervation: radial nerve
Action: rotates forearm laterally, also flexes the elbow

21
Q

Abductor digit I longus

A

Origin: craniolateral surface of ulna
Insertion: proximal end of metacarpal I and II
Innervation: radial nerve
Action: extends carpus, abducts pollex

22
Q

Flexor Carpi Radialis

A

Origin: Medial epicondyle of humerus
Insertion: Palmar aspect of metacarpals II & III
Innervation: Median nerve
Action: Flexes carpus

23
Q

Pronator Teres

A

Origin: Medial epicondyle of humerus
Insertion: Proximal medial border of radius
Innervation: Median nerve
Action: Rotates forearm medially (pronation), flexes elbow

24
Q

Pronator Quadratus

A

Origin: fills space between radius and ulna
Insertion: apposed surfaces of radius and ulna
Innervation: Median nerve
Action: Pronates the paw

25
Q

Interosseous

A

Origin: Base of respective metacarpal bones (II, III, IV, and V)
Insertion: metacarpophalangeal joint
Innervation: Ulnar nerve, deep branch
Action: Flexes metacarpophalangeal joints, fetlock

26
Q

Superficial Digital Flexor

A

Origin: medial epicondyle of the humerus
Insertion: palmar aspect of the middle phalanx on all digits
Innervation: median nerve
Action: extends elbow, flexes carpus and digits

27
Q

Flexor Carpi Ulnaris

A

Origin: numeral head -> medial epicondyle of humerus, ulnar head -> caudal medial border of olecranon
Insertion: accessory carpal bone
Innervation: ulnar nerve
Action: flexes carpus

28
Q

Deep Digital Flexor

A

Origin: numeral head -> medial epicondyle of humerus, ulnar head -> proximal caudal border of ulna, radial head -> medial border of radius
Insertion: flexor surface of the distal phalanx 3rd
Innervation: median and ulnar nerves
Action: extends elbow, flexes carpus and flexes digits