Upper Extremity 5th Part

Question 1

Origin of the Palmar Interossei

Answer 1

One head from the metacarpals of digits 2/4/5

Question 2

Insertion of the Palmar Interossei

Answer 2

Dorsal digital expansions of digits 2/4/5

Question 3

Function of the Palmar Interossei

Answer 3

Adduction + Flex. of fingers at metacarpophalangeal joints 2/4/5 + ext. of fingers at interphalangeal joints 2/4/5

Question 4

Origin of the Lumbricals

Answer 4

Tendons of the flexor digitorum profundus

Question 5

Function of the Lumbricals

Answer 5

Flex. of fingers at metacarpophalangeal joints + ext. of proximal and distal interphalangeal joints

Question 5

Insertion of the Lumbricals

Answer 5

Extensor expansion of the same digit

Question 6

Origin of the Flexor Pollicis Brevis

Answer 6

Flexor retinaculum + trapzium and trapezoid + capitate

Question 7

Insertion of the Flexor Pollicis Brevis

Answer 7

Lateral aspect of proximal phalanx for digit 1

Question 8

Function of the Flexor Pollicis Brevis

Answer 8

Flex. of digit at carpometacarpal and metacarpophalangeal joints 1 + flex. metacarpal and rotates it medially

Question 9

Origin of the Abductor Pollicis Longus

Answer 9

Posterior proximal surfaces of radius + ulna +interosseous membrane

Question 10

Insertion of the Abductor Pollicis Longus

Answer 10

Lateral base of metacarpal 1 + trapezium

Question 11

Function of the Abductor Pollicis Longus

Answer 11

Ext. + abduction of digit 1 at carpometacarpal joint 1 + ext. of hand at wrist joint

Question 12

Origin of the Abductor Pollicis Brevis

Answer 12

Flexor retinaculum + scaphoid + trapezium

Question 13

Insertion of the Abductor Pollicis Brevis

Answer 13

Lateral aspect of proximal phalanx of digit 1 (thumb)

Question 14

Insertion of the Adductor Pollicis

Answer 14

Medial surface of base of proximal phalanx of digit 1

Question 14

Function of the Abductor Pollicis Brevis

Answer 14

Abduction of finger at carpometacarpal joint 1

Question 15

Origin of the Adductor Pollicis

Answer 15

Metacarpals 2 and 3 + capitate

Question 16

Function of the Adductor Pollicis

Answer 16

Adduction of digit at carpometacarpal joint 1

Question 17

Origin of the Opponens Pollicis

Answer 17

Flexor retinaculum + scaphoid + trapezium

Question 18

Insertion of the Opponens Pollicis

Answer 18

Lateral border of metacarpal 1

Question 19

Function of the Opponens Pollicis

Answer 19

Opposition of thumb at carpometacarpal joint 1

Question 20

Origin of the Palmaris Brevis

Answer 20

Flexor retinaculum +medial border of palmar aponeurosis

Question 21

Insertion of the Palmaris Brevis

Answer 21

Skin on ulnar border of the palm

Question 22

Function of the Palmaris Brevis

Answer 22

Folds the skin of the ulnar side to the palm

Question 23

Origin of the Flexor Digiti Minimi Brevis

Answer 23

Hook of hamate + flexor retinaculum

Question 24

Insertion of the Flexor Digiti Minimi Brevis

Answer 24

Base of proximal phalanx of digit 5

Question 25

Function of the Flexor Digiti Minimi Brevis

Answer 25

Flex. of digit at metacarpophalangeal joint 5

Question 26

Origin of the Abductor Digiti Minimi

Answer 26

Pisiform

Question 27

Insertion of the Abductor Digiti Minimi

Answer 27

Medial side of proximal phalanx of digit 5

Question 28

Function of the Abductor Digiti Minimi

Answer 28

Abduction + flex. of digit at metacarpophalangeal joint 5 + ext. of finger at interphalangeal joint 5

Question 29

Origin of the Opponens Digiti Minimi

Answer 29

Hook of hamate + flexor retinaculum

Question 30

Insertion of the Opponens Digiti Minimi

Answer 30

Lateral aspect of metacarpal 5

Question 31

Function of the Opponens Digiti Minimi

Answer 31

Opposition of digit 5 at carpometacarpal joint 5