hand muscles

Question 1

ABductor Pollicus Longus (action and location)

Answer 1

ABduct the thumb (carpometacarpal joint)
extent the carpometacarpal joint
ABduct the radiocarpal joint

Question 2

extensor pollicis Longus and brevis (a& location)

Answer 2

• Extend the thumb (metacarpophalangeal and carpmetacarpal joints)
• ABduct he wrist (radiocarpal joint)
• EPL only: Extend the thumb (interphalangeal joint)

Question 3

Flexor Pollicis longus (a& l)

Answer 3

• flex the thumb (interphalangeal joint, metacarpophalangeal, and carpometacarpal joints)
• assists in flexion of radiocarpal joint (wrist)

Question 4

ABductor pollicis brevis (a&l)

Answer 4

• assists in thumb opposition

- ABduct the thumb at carpometacarpal and metacarpophalangeal joints

Question 5

Flexor pollicis brevis (a&l)

Answer 5

• assists in thumb opposition

- flex the thumb at carpometacarpal and metacarpophalangeal joints

Question 6

opponens pollicis

Answer 6

-opposition of the thumb at the carpometacarpal joint

Question 7

ADductor Pollicis

Answer 7

• ADduct the thumb (carpometacarpal and metacarpophalangeal joints)
• assists in flexion of the thumb at metacarpophalangeal joint)

Question 8

Lumbricals

Answer 8

• Extend the 2-5 fingers at the interphalangeal joints

- flex 2-5 fingers at metacarpophalangeal joints

Question 9

palmar interossi (the italian muscle)

Answer 9

• ADducts the thumb, 2nd,4th, and 5th fingers toward 3rd finger
• assist in flexion of the thumb, 2,4, and 5th fingers at metacarpophalangeal joints
• asssist in extending the thumb,2,4,5 fingers at the interphalangeal joints

Question 10

Dorsal interossi

Answer 10

• ABduct the 2,3, and 4th fingers at the metacarpophalangeal joints
• assists in flexion of the 2,3, and 4th fingers at the metacarpophalangeal joints
• assists in extending the 2,3,4 fingers at the interphalangeal joints

Question 11

ABductor digiti minimi

Answer 11

• ABduct the 5th finger at metacarpophalangeal joint

- assists in opposition of the 5th finger toward the thumb at metacarpophalangeal joint

Question 12

Flexor Digiti Minimi

Answer 12

• flex the 5th finger at metacarpophalangeal joint

- assist in opposition of the 5th finger towards te thumb

Question 13

Opponens digiti Minimi

Answer 13

• Opposition of the 5th finger at the carpometacarpal joint

Question 14

3 muscle tendons of the anatomical snuff box

Answer 14

extensor pollicis brevis
ABductor pollicis longus
extensor pollicis longus