Muscles of the Hand

Question 1

Posterior interosseous artery

Anterior interosseous artery

Answer 1

Blood of Extensor Indicis

Question 2

Innervation of Extensor Indicis

Answer 2

Posterior interosseous nerve (C7-8)

Question 3

What type of muscle is abductor pollics brevis?

Answer 3

Thenar/Intrinsic Muscle

Question 4

What type of muscle is flexor pollicis brevis?

Answer 4

Thenar/Intrinsic Muscle

Question 5

What type of muscle is the opponens pollicis?

Answer 5

Thenar/Intrinsic Muscle

Question 6

What is the common innervation of thenar muscles?

Answer 6

Recurrent branch of median nerve (C8, T1)

Question 7

What type of muscle is Dorsal Interossei?

Answer 7

Interossei Muscle

Question 8

What type of muscle is Palmar Interossei?

Answer 8

Interossei Muscle

Question 9

What is the innervation of Radial Lumbrical Muscles?

Answer 9

Median Nerve

Question 10

What is the innervation of the Ulnar Lumbrical Muscles?

Answer 10

Ulnar Nerve

Question 11

Function of the Lumbrical muscles?

Answer 11

Flex MCP Joints of digits 2-5 Extend IP joints of digits 2-5

Question 12

Flexor retinaculum Palmar Aponeurosis

Answer 12

Origin of Palmaris Brevis

Question 13

Skin on medial side of palm

Answer 13

Insertion of Palmaris Brevis

Question 14

Tenses skin on palm

Answer 14

Action of Palmaris Brevis

Question 15

Posterior surface of distal 1/3 of ulna and interosseous membrane

Answer 15

Origin of Extensor Indicis

Question 16

Extensor expansion of second finger (index)

Answer 16

Insertion of Extensor Indicis

Question 17

• Independent extension of 2nd finger - Helps with wrist extension

Answer 17

Action of Extensor Indicis

Question 18

Flexor retinaculum Tubercles of scaphoid and trapezium

Answer 18

Origin of Opponens Pollicis

Question 19

Lateral side of 1st metacarpal

Answer 19

Insertion of Opponens Pollicis

Question 20

Oppose thumb and medially rotate 1st metacarpal

Answer 20

Action of Opponens Pollicis

Question 21

Flexor retinaculum Tubercles of scaphoid and trapezium

Answer 21

Origin of Abductor Pollicis Brevis

Question 22

Lateral side of base of proximal phalanx of thumb

Answer 22

Insertion of Abductor Pollicis Brevis

Question 23

Abduct thumb Aid in opposition

Answer 23

Action of Abductor Pollicis Brevis

Question 24

Flexor Retinaculum and tubercles of scaphoid and trapezium

Answer 24

Origin of Flexor Pollicis Brevis

Question 25

Lateral side of base of proximal phalanx of thumb

Answer 25

Insertion of Flexor Pollicis Brevis

Question 26

Flexes thumb

Answer 26

Action of Flexor Pollicis Brevis

Question 27

Bases of 2nd and 3rd metacarpals Capitate Adjacent Carpals

Answer 27

Origin of Adductor Pollicis

Question 28

Medial side of base of proximal phalanx of thumb

Answer 28

Insertion of Adductor Pollicis

Question 29

Adducts thumb toward later border of palm

Answer 29

Action of Adductor Pollicis

Question 30

Pisiform

Answer 30

Origin of Abductor Digiti Minimi

Question 31

Medial side of base of proximal phalanx of 5th digit

Answer 31

Insertion of Abductor Digiti Minimi

Question 32

Abducts 5th digits Aids in flexion of 5th proximal phalanx

Answer 32

Action of Abductor Digiti Minimi

Question 33

Hook of hamate and flexor retinaculum

Answer 33

Origin of Flexor Digiti Minimi

Question 34

Medial side of base of proximal phalanx of 5th digit

Answer 34

Insertion of Flexor Digiti Minimi

Question 35

Flexes proximal phalanx of 5th digit

Answer 35

Action of Flexor Digiti Minimi

Question 36

Hook of hamate and flexor retinaculum

Answer 36

Origin of Opponens Digiti Minimi

Question 37

Medial border of 5th metacarpus

Answer 37

Insertion of Opponens Digiti Minimi

Question 38

Brings 5th metacarpal anterior and rotates it

Answer 38

Action of Opponens Digiti Minimi

Question 39

Abduct MP joints of digits 2-4

Answer 39

Function of DAB

Question 40

Adduct MP joints of digits, 1, 2, 4, 5

Answer 40

Function of PAD

Question 41

Radial Artery (4)

Answer 41

Opponens Pollicis Abductor Pollicis Brevis Flexor Pollicis Brevis Adductor Pollicis

Question 42

Ulnar Artery (3)

Answer 42

Abductor Digiti Minimi Flexor Digiti Minimi Opponens Digiti Minimi

Question 43

Median Nerve (3)

Answer 43

Opponens Pollicis Abductor Pollicis Brevis Flexor Pollicis Brevis

Question 44

Deep Branch of Ulnar Nerve (4)

Answer 44

Adductor Pollicis Abductor Digiti Minimi Flexor Digiti Minimi Opponens Digiti Minimi