Anatomy Thoracic Limb

What are the attachments, actions, arteries, and innervation of the Supraspinatus m.?

Attachments: supraspinatus fossa of the scapula and greater tubercle of the humerus

Action: stablize the shoulder

A: superficial cervical a.

N: suprascapular n.

What are the attachments, actions, arteries, and innervation of the Deltoideus m.?

Attachments: spine and acromion of the scapula and deltoid tuberosity

Action: flexor of the shoudler

A: subscapular a.

N: axiallary n.

What are the attachments, actions, arteries, and innervation of the Infraspinatus m.?

Attachments: infrapsinous fossa of the scapula and greater tubercle of the humerus

Action: stablize the shoulder

A: N/A

N: N/A

What are the attachments, actions, arteries, and innervation of the Tres minor m.?

Attachments: caudal aspect of the scapula and tres minor tuberosity of the humerus

Action: flexor of the shoulder

A: N/A

N: N/A

What are the attachments, actions, arteries, and innervation of the Subscapularis m.?

Attachments: subscapular fossa and lesser tubercle of humerus

Action: stablize the shoulder

A: N/A

N: subscapular n.

What are the attachments, actions, arteries, and innervation of the Tres major m.?

Attachments: caudal border of the scapula and tres major tuberosity of the humerus

Action: flexor of the shoulder

A: cd. circumflex humeral a.

N: N/A

What are the attachments, actions, arteries, and innervation of the coracobrachialis m.?

Attachments: coracoid process of the scapula and lesser tubercle and tres major tuberosity of the humerus

Action: flexor of the elbow

A: transverse cubital a.

N: N/A

What are the attachments, actions, arteries, and innervation of the Bicep brachii m.?

Attachments: supraglenoid tubercle of the scapula and proximal radius and ulna, in combination with the tendon of the brachialis m.

Action: flexor of the elbow

A: bicipital a.

N: musculocutaneous n.

What are the attachments, actions, arteries, and innervation of the Brachilais m.?

Attachments: promixal humerus and medial aspect proximal radius and ulna

Action: flexor of the elbow

A: cr. circumflex humeral a.

N: N/A

What are the attachments, actions, arteries, and innervation of the Tensor fascia antebrachii m.?

Attachments: fascia on lateral surface of latissimus dorsi and olecrannon

Action: extensor of the elbow

A: N/A

N: N/A

What are the attachments, actions, arteries, and innervation of the Triceps brachii m.(longhead, lateral head, medial head, accessory head)?

Attachments: long head: caudal broder of scapula to tuber olecrani, lateral head: tricipital line of the humerus to tuber olecrani, medial head: crest of the lesser tubercle to tuber olecrani, accessory head: neck of humerus to tuber olecrani

Action: extensor of the elbow

A: deep brachii a.

N: radial n.

What are the attachments, actions, arteries, and innervation of the Aconeus m.?

Attachments: lateral supracondylar crest of epicondyle of the humerus to the olecrannon

Action: extensor of the elbow

A: collaterol ulnar a.

N: N/A

What are the attachments, actions, arteries, and innervation of the Extensor capri radialis m.?

Attachments: lateral epicondyle of the humerus and metacarpal bones 2 and 3

Action: extensor of the carpus and digits

A: common interosseous a.

N: radial n.

What are the attachments, actions, arteries, and innervation of the Common digital extensor m.?

Attachments: lateral epicondyle of the humerus and distal phalanges of weight-bearing digits (2-5)

Action: extensor of the carpus and digits

A: cr. interosseous a.

N: N/A

What are the attachments, actions, arteries, and innervation of the Lateral digital extensor m.?

Attachments: lateral epicondyle of the humerus and distal phalanges of digits (3-5)

Action: extensor of the carpus and digits

A: N/A

N: N/A

What are the attachments, actions, arteries, and innervation of the Ulnaris lateralis m.?

Attachments: lateral epicondyle of the humerus and metacarpal bone 5; accessory carpal bone

Action: extensor of the carpus and digits

A: N/A

N: N/A

What are the attachments, actions, arteries, and innervation of the Supinator m.?

Attachments: lateral epicondyle of the humerus and radius

Action: extensor of the carpus and digits (supination)

A: N/A

N: N/A

What are the attachments, actions, arteries, and innervation of the Supinator m.?

Attachments: holds down tendon of extensor carpi radialis m.

Action: extensor of the carpus and digits

A: N/A

N: N/A

What are the attachments, actions, arteries, and innervation of the Pronator tres m.?

Attachments: medial epicondyle of the humerus and proximal medial radius

Action: flexor of the carpus and digits

A: N/A

N: N/A

What are the attachments, actions, arteries, and innervation of the Flexor capri radialis m.?

Attachments: medial epicondyle of humerus and metacarpal bones 2 and 3

Action: flexor of the carpus and digits

A: N/A

N: N/A

What are the attachments, actions, arteries, and innervation of the Flexor carpi ulnaris m.?

Attachments: medial epicondyle of humerus; cuadomedial surface of the olecrannon and accessory carpal bone

Action: flexor of the carpus and digits

A: deep antebrachial a.

N: median and ulnar n.

What are the attachments, actions, arteries, and innervation of the Flexor carpi ulnaris m. (ulnar head and humeral head)?

Attachments: medial epicondyle of humerus; cuadomedial surface of the olecrannon and accessory carpal bone

Action: flexor of the carpus and digits

A: deep antebrachial a.

N: median and ulnar n.

What are the attachments, actions, arteries, and innervation of the Superficial digital flexor m.?

Attachments: medial epicondyle of humerus and palmar surface of the middle phalanx of the weight-bearing digits (2-5)

Action: flexor of the carpus and digits

A: N/A

N: N/A

What are the attachments, actions, arteries, and innervation of the Deep digital flexor m.(humeral head, radial head, and ulnar head)?

Attachments: medial epicondyle of humerus; caudal border of the ulna; medial border of the radius and distal phalanx of all 5 digits

Action: flexor of the carpus and digits

A: N/A

N: N/A

What is the carpal canal?

Formed by the accessory carpal bone laterally, the palmar carpal ligament, carpal bones and the flexor retinaculum

Where is the palmar annular ligament?

lies on the palmar surface of the metacarpophalangeal joint, holding down the flexor tendons

What is the flexor manica?

tubelike enclosures formed by tendons of the superficial digital flexor m. around the deep digital flexor tendons at the level of the metacarpophalangeal joints, allowing the deep digital flexor tendons to “perforate” the superficial digital flexor tendons and assume a more superficial postion

What is the extensor retinaculum?

band of collagenous connective tissues that binds down the tendons of the extesnor carpi radialis and other extensor muscles, located of caudal side of carpal joint

What is the transverse humeral retinaculum?

band of firbous connective tissue that holds tendon in place in the intertubular groove in the cranial aspect of the arm

What is the pearly colored structure called that lies between the tendon of infrapinatus m. and greater tuberucle humerus and is a synovial fluid filled sac to reduce friction?

Burse of the infraspinatus m.