Anatomy Test 8 (Muscular System 4 Actions)

What is the action of the flexor capri radialis?

It flexes and abducts (radial deviation) the hand at the wrist joint

What is the action of the flexor capri ulnaris?

It flexes and adducts (ulnar deviation) the hand at the wrist joint

What is the action of the flexor digitorum superficialis?

It flexes the middle phalanx of each finger at the proximal interphalangeal joint, the proximal phalanx of each finger at the metacarpophalangeal joint, and the hand at the wrist

What is the action of the flexor pollicis longus?

It flexes the distal phalanx of the thumb at the interphalangeal joint

What is the action of the flexor digitorum profundus?

It flexes the distal and middle phalanges of each finger at the interphalangeal joints, the proximal phalanx of each finger at the metacarpophalangeal joint, and the hand at the wrist

What is the action of the extensor capri radialis longus?

It extends and abducts (radial deviation) the hand at the wrist joint

What is the action of the extensor capri radialis brevis?

It extends and abducts (radial deviation) the hand at the wrist joint

What is the action of the extensor digitorum?

It extends the distal and middle phalanges of each finger at the interphalangeal joints, the proximal phalanx of each finger at the metacarpophalangeal joint, and the hand at the wrist joint

What is the action of the extensor capri ulnaris?

It extends and adducts (ulnar deviation) the hand at the wrist joint

What is the action of the extensor pollicis brevis?

It extends the proximal phalanx of the thumb at the metacarpalphalangeal joint, the first metacarpal of the thumb at the carpometacarpal joint, and the hand at the wrist joint

What is the action of the extensor pollicis longus?

It extends the distal phalanx of the thumb at the interphalangeal joint, the first metacarpal of the thumb at the carpometacarpal joint, and it abducts the hand at the wrist joint

What happens if the FCU (flexor carpi ulnaris) and the ECU (extensor carpi ulnaris) contract at the same time?

You will get ulnar deviation

What happens if the FCR (flexor carpi radialis) and the ECRL/B (extensor carpi radialis longus/brevis) contract at the same time?

You will get radial deviation

What happens if the FCU (flexor carpi ulnaris) and the FCR (flexor carpi radialis) contract at the same time?

You will get flexion of the wrist

What happens if the ECU (extensor carpi ulnaris) and the ECRL/B (extensor carpi radialis longus/brevis) contract at the same time?

You will get extension of the wrist