Where is the Brachioradialis?
Function of the Brachioradialis?
Flexion of forearm
Assists in pronation of forearm (when supinated)
Assists in supination of forearm (when pronated)
Origin of the Brachioradialis?
Humerus (lateral distal shaft)
Insertion and Innervation of the Brachioradialis?
Radius (styloid process)
Radial nerve
Where is the Flexor Carpi Radialis?
Function of the Flexor Carpi Radialis?
Flexion of wrist
Abduction of hand (lateral deviation)
Origin of the Flexor Carpi Radialis?
Humerus (medial epicondyle)
Insertion and Innervation of the Flexor Carpi Radialis?
Metacarpals II and III (base)
Median nerve
Where is the Flexor Carpi Ulnaris?
Function of the Flexor Carpi Ulnaris?
Flexion of wrist
Adduction of hand (medial deviation)
Origin of the Flexor Carpi Ulnaris?
Humerus (medial epicondyle)
Ulna (olecranon and posterior border of ulna)
Insertion and Innervation of the Flexor Carpi Ulnaris?
Carpal bones (pisiform and hamate)
Metacarpal V (base)
Ulnar nerve
Where is the Flexor Digitorum Profundus?
Function of the Flexor Digitorum Profundus?
Flexion of fingers 2-5
Assists in flexion of wrist and metacarpophalangeal joints
Origin of the Flexor Digitorum Profundus?
Ulna (proximal anterior shaft)
Interosseous membrane
Insertion and Innervation of the Flexor Digitorum Profundus?
Distal phalanges of fingers 2-5
Lateral part: median nerve
Medial part: ulnar nerve
Where is the Flexor Digitorum Superficialis?
Function of the Flexor Digitorum Superficialis?
Flexion of fingers 2-5
Assists in flexion of wrist and metacarpophalangeal joints
Origin of the Flexor Digitorum Superficialis?
Humerus (medial epicondyle)
Ulna (coronoid process)
Radius (proximal anterior shaft)
Insertion and Innervation of Flexor Digitorum Superficialis?
Middle phalanges of fingers 2-5
Median nerve
Where is the Flexor Pollicis Longus?
Function of the Flexor Pollicis Longus?
Flexion of the Thumb
Origin of the Flexor Pollicis Longus?
Radius (anterior mid-shaft)
Interosseous membrane
Ulna (coronoid process)
Insertion and Innervation of the Flexor Pollicis Longus?
Distal phalanx of thumb
Median nerve
Where is the Palmaris Longus?
Function of the Palmaris Longus?
Flexion of wrist (weak)
Tense palmar aponeurosis
Origin of the Palmaris Longus?
Humerus (medial epicondyle)
Insertion and Innervation of the Palmaris Longus?
Palmar aponeurosis
Median nerve
Where is the Pronator Quadratus?
Function of the Pronator Quadratus?
Pronation of Forearm
Origin of the Pronator Quadratus?
Ulna (anterior distal shaft)
Insertion and Innervation of the Pronator Quadratus?
Radius (anterior distal shaft)
Median Nerve
Where is the Pronator Teres?
Function of the Pronator Teres?
Pronation of Forearm
Origin of the Pronator Teres?
Humerus (medial epicondyle)
Ulna (coronoid process)
Insertion and Innervation of the Pronator Teres?
Radius (lateral mid-shaft)
Median nerve
Where is the Supinator?
Function of the Supinator?
Supination of forearm
Origin of the Supinator?
Ulna (posterior proximal shaft)
Lateral epicondyle of humerus
Insertion and Innervation of the Supinator?
Radius (lateral proximal shaft)
Radial nerve
Where is the Abductor Pollicis Longus?
Function of the Abductor Pollicis Longus?
Abduction of thumb
Extension of thumb
Origin of the Abductor Pollicis Longus?
Radius (proximal posterior)
Ulna (proximal posterior)
Interosseous membrane
Insertion and Innervation of the Abductor Pollicis Longus?
Metacarpal I (base)
Radial nerve
Where is the Brachioradialis?
Function of the Brachioradialis?
Flexion of forearm
Assists in pronation of forearm (when supinated)
Assists in supination of forearm (when pronated)
Origin of the Brachioradialis?
Humerus (lateral distal shaft)
Insertion and Innervation of the Brachioradialis?
Radius (styloid process)
Radial nerve
Where is the Extensor Carpi Radialis Brevis?
Function of the Extensor Carpi Radialis Brevis?
Extension of wrist
Abduction of hand (lateral deviation)
Origin of the Extensor Carpi Radialis Brevis?
Humerus (lateral epicondyle)
Insertion and Innervation of the Extensor Carpi Radialis Brevis?
Metacarpal III (base)
Radial nerve
Where is the Extensor Carpi Radialis Longus?
Function of the Extensor Carpi Radialis Longus?
Extension of wrist
Abduction of hand (lateral deviation)
Origin of the Extensor Carpi Radialis Longus?
Humerus (lateral supracondylar ridge)
Insertion and Innervation of the Extensor Carpi Radialis Longus?
Metacarpal II (base)
Radial nerve
Where is the Extensor Carpi Ulnaris?
Function is the Extensor Carpi Ulnaris?
Extension of wrist
Adduction of hand (medial deviation)
Origin of the Extensor Carpi Ulnaris?
Humerus (lateral epicondyle)
Ulna (posterior shaft)
Insertion and Innervation of the Extensor Carpi Ulnaris?
Metacarpal V (base)
Radial nerve
Where is the Extensor Digiti Minimi?
Function of the Extensor Digiti Minimi?
Extension of little finger
Origin of the Extensor Digiti Minimi?
Humerus (lateral epicondyle via common extensor tendon)
Insertion and Innervation of the Extensor Digiti Minimi?
Middle and distal phalanx of little finger
Extensor expansion of little finger
Radial nerve
Where is the Extensor Digitorum?
Function of the Extensor Digitorum?
Extension of fingers 2-5
Assists in extension of wrist
Origin of the Extensor Digitorum?
Humerus (lateral epicondyle)
Insertion and Innervation of the Extensor Digitorum?
- Extensor expansion (each expansion attaches distally to the middle and distal phalanges of fingers 2-5)
- Radial nerve
Where is the Extensor Indicis?
Function of the Extensor Indicis?
Extension of index finger
Origin of the Extensor Indicis?
Ulna (distal posterior)
Interosseous membrane
Insertion and Innervation of the Extensor Indicis?
Distal phalanx of index finger
Extensor expansion of index finger
Radial nerve
Where is the Extensor Pollicis Brevis?
Function of the Extensor Pollicis Brevis?
Extension of thumb
Origin of the Extensor Pollicis Brevis?
Radius (posterior distal shaft)
Interosseous membrane
Insertion and Innervation of the Extensor Pollicis Brevis?
Proximal phalanx of thumb (dorsal side)
Radial nerve
Where is the Extensor Pollicis Longus?
Function of the Extensor Pollicis Longus?
Extension of thumb
Origin of the Extensor Pollicis Longus?
Ulna (posterior mid-shaft)
Interosseous membrane
Insertion and Innervation of the Extensor Pollicis Longus?
Distal phalanx of thumb
Radial nerve
Posterior View of Supinator?
