Cadaver Anatomy Upper Extremity

What is the PROXIMAL attachment of the anterior attachment of the deltoid?

The lateral clavicle

What is the PROXIMAL attachment of the middle portion of the deltoid

The acromion

What is the PROXIMAL attachment of the posterior portion of the deltoid?

The spine of the scapula

What is the DISTAL attachment of the deltoid?

Deltoid tuberosity

What is the action of the deltoid?

Flexion and internal rotation of the anterior portion, ABduction from the middle, extension, external rotation and horizontal ABduction from the posterior

What is the innervation of the deltoid?

Axillary nerve from C5-C6

What is the paralleling artery of the deltoid?

The posterior humeral circumflex artery

What is the PROXIMAL attachment of the teres major?

The inferior angle of the scapula

What is the DISTAL attachment of the teres major?

Intertubuclar groove of the humerus

What is the action of the teres major

ADduction, Internal rotation, and Extension of the shoulder

What is the innervation of the teres major?

Lower subscapular nerve from C5-C6

What is the paralleling artery of the teres major?

The scapular circumflex artery

What is the PROXIMAL attachment of the Supraspinatus?

Supraspinous Fossa

What is the DISTAL attachment of the supraspinatus?

The greater tubercle of the humerous

What is the action of the supraspinatus

The first 15 degrees of ABduction

What is the innervation of the supraspinatus?

the suprascapular nerve from C5-6

What is the paralleling artery of the supraspinatus?

The suprascapular artery

What is the DISTAL attachment of the infraspinatus?

The infraspinous fossa

What is the PROXIMAL attachment of the infraspinatus?

Greater tubercle of the humerous

What is the action of the infraspinatus?

External rotation

What is the innervation of the infraspinatus?

the suprascapular nerve from C5-6

What is the paralleling artery of the infraspinatus?

The suprascapular artery

What is the PROXIMAL attachment of the Teres Minor?

The lateral boarder of the scapula

What is the DISTAL attachment of the teres minor?

The greater tubercle of the humerus

What is the action of the Teres Minor?

External rotation

What is the innervation of the teres minor?

The axillary nerve from C5-C6

What is the paralleling artery of the teres minor?

The posterior humeral circumflex artery

What is the PROXIMAL attachment of the subscapularis?

The subscapular fossa

What is the DISTAL attachment of the subscapularis?

The lesser tubercle of the humerus

What is the action of the subscapularis?

Internal rotation of the shoulder

What is the innervation of the subscapularis?

The upper and lower subscapular nerves from C5-C6

What is the PROXIMAL attachment of the LONG head of the biceps brachii?

The supraglenoid tubercle

What is the PROXIMAL attachment of the SHORT head of the biceps brachii?

The coracoid process

What is the DISTAL attachment of the biceps brachii?

The radial tuberosity of the humerus

What are the actions of the biceps brachii?

Flexion of the elbow and shoulder & supination of the forearm

What is the innervation of the biceps brachii?

The musculocutaneous nerve from C5-C7

What is the PROXIMAL attachment of the Coracobrachialis?

The coracoid process

What is the distal attachment of the coracobrachialis?

Anterior medial humerus

What is the action of the coracobrachialis?

Flexion and ADduction of the shoulder

What is the innervation of the coracobrachialis?

The musculocutaneous nerve of C5-C7

What is the PROXIMAL attachment of the Brachialis?

The anterior humerus

What is the DISTAL attachment of the brachialis?

The Ulnar tuberosity

What is the action of the Brachialis

Elbow flexion

What is the innervation of the brachialis?

The musculocutaneous nerve from C5-C7

What is the PROXIMAL attachment of the LONG head of the Triceps

The infraglenoid tubercle

What is the PROXIMAL attachment of the LATERAL head of the triceps?

Posterior humerus lateral to the radial groove

What is the PROXIMAL attachment of the MEDIAL head of the Triceps?

Posterior Humerus medial to the radial groove

What is the DISTAL attachment of the triceps?

The olecranon of the ulna

What are the actions of the Triceps?

Humerus extension from the long head, and elbow extension from all three heads

What is the innervation of the Triceps?

The radial nerve from C5-T1

What is the PROXIMAL attachment of the anconeus?

The lateral epicondyle of the humerus

What is the DISTAL attachment of the Anconeus?

The lateral olecranon of the ulna

What is the action of the anconeus?

Assists with elbow extension

What is the innervation of the anconeus?

The radial nerve from C5-T1

What is the PROXIMAL attachment of the pronator teres?

Medial epicondyle of the humerus, coronoid of ulna

What is the DISTAL attachment of the pronator teres?

Lateral radius

What is the action of the Pronator Teres?

Forearm pronation and weak elbow flexion

What is the innervation of the pronator teres?

The median nerve from C5-T1

What is the PROXIMAL attachment of the Palmaris Longus?

The medial epicondyle of the humerus

What is the DISTAL attachment of the palmaris longus?

The palmar aponeurosis

What is the action of the Palmaris Longus?

Wrist flexion

What is the innervation of the palmaris longus?

The median nerve at C5-T1

What is the PROXIMAL attachment of the Flexor Carpi Radialis

The medial epicondyle of the humerous

What is the DISTAL attachment of the Flexor Carpi Radialis?

2nd Metacarpal

What are the actions of the Flexor Carpi Radialis?

Wrist flexion and radial deviation, weak elbow flexion

What is the innervation of the Flexor Carpi Radialis

Median Nerve from C5-T1

What is the PROXIMAL attachment of the Flexor Carpi Ulnaris

Medial epicondyle of humerus and posterior ulna

What is the DISTAL attachment of the Flexor Carpi Ulnaris?

The Pisform, Hook of Hamate, and 5th Metacarpal

What are the actions of the flexor carpi ulnaris?

Flexion and ulnar deviation of the wrist, weak elbow flexion

What is the innervation of the flexor carpi ulnaris?

The ulnar nerve from C8-T1

What is the PROXIMAL attachment of the Flexor Digitorum Superficialis?

The medial epicondyle of the humerus, coronoid, proximal radius and ulna

What is the DISTAL attachment of the Flexor Digitorum Superficialis?

Middle phalanx of the medial 4 digits

What is the action of the Flexor Digitorum Superficialis?

Flexion of the proximal interphalangeal joints, assist in wrist flexion, weak elbow flexion

What is the innervation of the Flexor Digitorum Superficialis?

Median nerve from C5-T1

What is the PROXIMAL attachment of the Flexor Digitorum Profundus?

Proximal ulna and interosseus membrane

What is the DISTAL attachment of the Flexor Digitorum Profundus?

Distal phalanx of the medial 4 digits

What is the action of the Flexor Digitorum Profundus?

Flexion at the Distal Interphalangal joints, assist in flexion at the PIP, MCP, and wrist

What is the innervation of the Flexor Digitorum Profundus?

Ulnar nerve for medial 2 digits, anterior interosseus nerve for lateral 2 digits, both from C8-T1

What is the PROXIMAL attachment of the Flexor Pollicis Longus?

Anterior radius

What is the DISTAL attachment of the Flexor Pollicis Longus?

Distal phalanx of the thumbW

What is the action of the Flexor Pollicis Longus?

Flexion at DIP of thumb

What is the innervation of the Flexor Pollicis Longus?

Anterior interosseous nerve from C8-T1

What is the PROXIMAL attachment of the Pronator Quadratus?

Distal Ulna

What is the PROXIMAL attachment of the Pronator Quadratus?

Distal Radius

What is the action of the Pronator Quadratus?

Pronation of the forearm

What is the innervation of the Pronator Quadratus?

Anterior Interosseous nerve from C8-T1

What is the PROXIMAL attachment of the Brachioradialis?

The lateral supraepicondylar ridge

What is the DISTAL attachment of the brachioradialis?

Lateral distal radius

What is the action of the brachioradialis?

Flexion of the elbow

What is the innervation of the Brachioradialis?

Radial nerve from C5-T1

What is the PROXIMAL attachment of the Extensor Carpi Radialis Longus?

Lateral supracondylar ridge

What is the DISTAL attachment of the Extensor Carpi Radialis Longus?

2nd Metacarpal

What is the action of the Extensor Carpi Radialis Longus?

Extension and Radial Deviation of the wrist, Weak elbow extension

What is the innervation of the Extensor Carpi Radialis Longus?

Radial nerve from C5-T1

What is the PROXIMAL attachment of the Extensor Carpi Radialis Brevis?

Lateral epicondyle of the humerus

What is the DISTAL attachment of the Extensor Carpi Radialis Brevis?

3rd Metacarpal

What is the action of the Extensor Carpi Radialis Brevis?

Extension and radial deviation of the wrist, weak elbow extension

What is the PROXIMAL attachment of the Extensor Digitorum?

Lateral Epicondyle

What is the DISTAL attachment of the extensor digitorum?

Middle and distal phalanxes of medial 4 digits

What is the action of the extensor digitorum?

Extension of the MCP, PIP and DIP joints, assist in wrist extension, weak elbow extension