Superficial and Deep forearm muscles (POSTERIOR)

Question 1

Triceps Brachii

Answer 1

Location: Shown inserting upon the olecranon process of the ulna
Function: act to extend the forearm opposing the actions of the biceps brachii, brachialis, and brachioradialis muscles

Question 2

Anconeus Muscle

Answer 2

Known as the fourth head of the tricpets inserts beside the triceps brachii
Function: act to extend the forearm opposing the actions of the biceps brachii, brachialis, and brachioradialis muscles

Question 3

5 Superficial muscles involved in extension

Answer 3

Location: all arise from the lateral epicondyle of the humerus
Extensor Carpi radialis longus, extensor carpi radialis brevis, extensor digitorum communis, extensor digiti minimi, extensor carpi ulnaris

Question 4

Extensor Carpi Muscles

Answer 4

All act to extend the wrist

Question 5

Extensor Carpir Radialis Longus

Answer 5

Location: Inserts at the base of the second metacarpal bones
Function: extend the wrist

Question 6

Extensor Carpi Radialis Brevis

Answer 6

Location: At the base of the third meta carpal
Function: extend the wrist

Question 7

Extensor Carpi Ulnaris

Answer 7

Location: at the base of the fifth meta carpal
Function: extend the wrist

Question 8

Extensor Digitorum Communis

Answer 8

Location: Has four tendons
Function: act to extend the index, long, ring and little fingers

Question 9

Extensor Digiti Minimi

Answer 9

Tendon sent to the little finger

Question 10

5 deep muscles

Answer 10

Act to extend, abduct or supinate.
Abductor Pollicis Longus, extensor pollicis brevis, extensor polliciis longus, extensor indicis proprius and the supinator

Question 11

Pollicis

Answer 11

Muscles act upon the thumb

Question 12

Indicis

Answer 12

The one muscle that reaches the index finger

Question 13

Supinator Muscles

Answer 13

Location: attaches to the radius
Function: acts to rotate thepalm forward, back to the anatomical position

Question 14

Extensor Pollicis Brevis

Answer 14

Location: inserts on the proximal phalanx
Function: acting to extend the metacarpophalangeal joint

Question 15

Extensor Pollicis Longus

Answer 15

Location: Inserts into the distal phalanx of the thumb
Function: acting to extend the interphalangeal joints

Question 16

Abductor Pollicis longus

Answer 16

Location: Attaches to the baseof the first metacarpal bone
Function: To move the thumb laterally (abduction)

Question 17

Anatomical Snuff Box

Answer 17

When the thumb is fully extend, tenods of the extensor pollicis longus and brevis, along with the abductor pollicis longus tendon
Location: just distal to the wrist.
Contains a portion of the radial artery, deep to these three tendons

Question 18

Extensor Indicis

Answer 18

Location: Attaches tot he proximal phalanx of the index finger
Function: Serving to straighten the metacarpo-phalangeal joint and assis the extensor digitorum communis tendon to this finger.

Question 19

Small Interossei Muscles

Answer 19

Seven (Mean btwn the bones) in the palm.
Location: Extend from the metacarpal bones to the proximal phalanges
Function: Are in two groups, dorsal and palmar

Question 20

PAD

Answer 20

Palmar interossei adduct the fingers

Question 21

DAB

Answer 21

Doral Interossei abduct the fingers relative to the midline of the hand

Question 22

Dorsal Interossei Muscles

Answer 22

Location: Extend to the index, middle and ring fingers, each arsises as two heads from adjacent sides of the metacarpal bones
Function:

Question 23

First dorsal interosseous

Answer 23

Location: Large muscle, inserting into the proximal phalanx of the index finger along the radial side
Function:

Question 24

Extensor Hood

Answer 24

Posterior side of the hand surrounding the tendons to the phalanges.