Week five OIA Upper E

Question 1

Origin of adductor pollicis

Answer 1

Capitate, 2nd and 3rd metacarpal

2-3 got capitated

Question 2

Insertion of adductor pollicis

Answer 2

The base of the proximal phalange of the thumb

Question 3

Action of adductor pollicis

Answer 3

Adducts thumb at MCP and CMC, assists in flexion thumb

Question 4

Origin of flexor pollicis brevis

Answer 4

Superficial: flexor retinaculum
Deep: trapezium, trapezoid capitate

FT, TTC
Top 3 pinky side nuckles

Question 5

Insertion of flexor pollicis brevis

Answer 5

Base of proximal phalange of the thumb

Question 6

Action of flexor pollicis brevis

Answer 6

Flex thumb at MCP and CMC, assist in opposition of the thumb

Question 7

Origin of abductor pollicis brevis

Answer 7

Flexor retinaculum, trapezium, scaphoid tubercles

FR, scate away from the trapezium

Question 8

Insertion of abductor pollicis brevis

Answer 8

Base of proximal phalange of thumb

Question 9

Action of abductor pollicis brevis

Answer 9

abducts thumb, assist opposition thumb

Question 10

Origin of opponens pollicis

Answer 10

flexor retinaculum and tubercle trapezium

FR and trapezium

Question 11

Insertion of opponens pollicis

Answer 11

Entire length of 1st metacarpal, radial

Question 12

The action of opponens pollicis

Answer 12

opposition of thumb at CMC

Question 13

Origin of flexor digiti minimi brevis

Answer 13

Hook of hamate, flexor retinaculum

HH and FR

Question 14

Insertion of flexor digiti minimi brevis

Answer 14

Base of proximal 5th phalange, palmar surface

Question 15

Action of flexor digiti minimi brevis

Answer 15

Flextion of 5th finger, assist opposition of thumb

Question 16

Origin of abductor digiti minimi

Answer 16

Pisiform and tendon of flexor carpi ulnaris

Question 17

Insertion of abductor digiti minimi

Answer 17

Base of proximal phalanx 5th finger, ulnar surface

Question 18

Action of abductor digiti minimi

Answer 18

Abducts 5th phalange, assist opposition of 5th finger to thumb

Question 19

Origin of oppenens digiti minimi

Answer 19

Hook of hamate, flexor retinaculum

HH and FR

Question 20

Insertion of oppenens digiti minimi

Answer 20

Shaft 5th metacarpal, ulnar surface

Question 21

Action of oppenens digiti minimi

Answer 21

Opposition of 5th finger at CMC joint

Question 22

Origin of palmar interossei

Answer 22

Base of 1-2 and 4-5 metacarpals

Question 23

Insertion of palmar interossei

Answer 23

Base of proximal phalanx of related finger and the extensor aponeurosis

Question 24

Action of palmar interossei

Answer 24

Adducts, flexion and extension of 1,2,4,5 fingers

Question 25

Origin of dorsal interossei

Answer 25

adjacent sides of all metacarpals

Question 26

insertion of dorsal interossei

Answer 26

Base of proximal phalanx of 2-4 fingers and extensor aponeurosis

Question 27

Action of dorsal interossei

Answer 27

Abduction, flexion, extension of 2-4 fingers at MCP

Question 28

Origin of lumbricals

Answer 28

Surfaces of flexor digitorum profundus tendons

Question 29

Insertion of lumbricals

Answer 29

Extensor aponeurosis on dorsal surface of phalange

Question 30

Action of lumbricals

Answer 30

Extension and flexion 2-5 fingers at IP and MCP