Coracobrachialis

[image]

O:

I:

Action:

Nerve:

Coracobrachialis

O: Coracoid process of scapula

I: Medial humerus

Action: FLEX and stabilize arm; weak ADD of arm

Nerve: Musculocutaneous n. (C6-C7)

Brachialis

[image]

O:

I:

Action:

Nerve:

Brachialis

O: Anterior/distal half humerus

I: Coronoid process & tuberosity of ulna

Action: FLEX forearm

Nerve: Musculocutaneous n. (C5-C6)

Biceps Brachii

[image]

O:

I:

Action:

Nerve:

Biceps Brachii

O: Long head (lateral)-- Supraglenoid tubercle of scapula

Short head (medial)-- Coracoid process of scapula

I: Radial tuberosity & bicapital aponeurosis

Action: 1° Supinator, FLEX forearm

Nerve: Musculocutaneous (C5-C6)

Triceps Brachii

[image]

O:

I:

Action:

Nerve:

Triceps Brachii

O: Long head -- Infraglenoid tubercle of scapula

Lateral head -- Upper posterior humerus

Medial head -- Lower posterior humerus

I: Olecranon

Action: EXT forearm; long head aids ADD

Nerve: Radial n. (C6-C8)

Pronator Teres

[image]

O:

I:

Action:

Nerve:

Pronator Teres

O: Humeral head -- MEH & CFT

 Ulnar head -- Coronoid process of ulna

I: Lateral radius

Action: Pronate and FLEX forearm

Nerve: Median n. (C6-C7)

Palmaris Longus

[image]

O:

I:

Action:

Nerve:

Palmaris Longus

O: MEH & CFT

I: Flexor retinaculum & palmar aponeurosis

Action: FLEX hand at wrist

Nerve: Median n. (C6-C7)

Flexor Carpi Radialis

[image]

O:

I:

Action:

Nerve:

Flexor Carpi Radialis

O: MEH & CFT

I: Base of MC #2, 3

Action: FLEX hand at wrist, synergist ABD w/ECRL and ECRB

Nerve:Median n. (C6-C7)

Flexor Carpi Ulnaris

[image]

O:

I:

Action:

Nerve:

Flexor Carpi Ulnaris

O: Humeral head -- MEH & CFT

Ulnar head -- Olecranon & shaft ulna

I: Pisiform, hook of hamate, & base of MC #5

Action: FLEX hand at wrist, synergist ADD w/ECU

Nerve:Ulnar (C8-T1)

Flexor Digitorum Superficialis

[image]

O:

I:

Action:

Nerve:

Flexor Digitorum Superficialis

O: Humeroulnar head -- MEH, CFT & coronoid process of ulna

Radial head -- Anterior radius

I: 4 tendons divide into 2 slips each & insert onto middle phalanges digits #2-5

Action: FLEX middle phalanges #2-5

Nerve: Median (C7-T1)

Flexor Digitorum Profundus

[image]

O:

I:

Action:

Nerve:

Flexor Digitorum Profundus

O: Shaft ulna & IOM

I: Base distal phalanges #2-5

Action: FLEX distal phalanges #2-5

Nerve: Ulnar -- medial half (digits 4,5)

Median -- lateral half (digits 2,3) (C8-T1)

Flexor Pollicis Longus

[image]

O:

I:

Action:

Nerve:

Flexor Pollicis Longus

O: Shaft radius & IOM

I: Base distal phalanx of thumb

Action: FLEX thumb

Nerve: Median (C8-T1)

Pronator Quadratus

[image]

O:

I:

Action:

Nerve:

Pronator Quadratus

O: Distal shaft of ulna

I: Distal shaft of radius

Action: Pronate forearm

Nerve: Median (C8-T1)

Brachioradialis

[image]

O:

I:

Action:

Nerve:

Brachioradialis

O: Lateral humerus

I: Styloid process of radius

Action: FLEX forearm

Nerve: Radial (C5-C6)

Extensor Carpi Radialis Longus

[image]

O:

I:

Action:

Nerve:

Extensor Carpi Radialis Longus

O: Lateral humerus

I: Distal base MC #2

Action: EXT hand at wrist; synergist -- ABD w/FCR

Nerve: Radial n. (C6-C7)

Extensor Carpi Radialis Brevis

[image]

O:

I:

Action:

Nerve:

Extensor Carpi Radialis Brevis

O: LEH & CET

I: Dorsal base MC #3

Action: EXT hand at wrist; synergist -- ABD w/FCR

Nerve: Radial n. (C6-C8)

Extensor Digitorum

[image]

O:

I:

Action:

Nerve:

Extensor Digitorum

O: LEH & CET

I: Dorsal surface phalanges #2-5

Action: EXT digits #2-5

Nerve: Radial n. (C6-C8)

Extensor Digiti Minimi

[image]

O:

I:

Action:

Nerve:

Extensor Digiti Minimi

O: LEH & CET

I: Dorsal surface digit #5

Action: EXT 5th digit

Nerve: Radial n. (C6-C8)

Extensor Carpi Ulnaris

[image]

O:

I:

Action:

Nerve:

Extensor Carpi Ulnaris

O: LEH & CET

I: Dorsal base MC#5

Action: EXT hand at wrist; synergist -- ADD w/FCU

Nerve: Radial n. (C6-C8)

Anconeus

[image]

O:

I:

Action:

Nerve:

Anconeus

O: LEH

I: Olecranon

Action: EXT forearm (assists triceps)

Nerve: Radial n. (C6-C8)