Hand

Question 1

3 groups of hand muscles

Answer 1

Thenar
Hypothenar
Central

Question 2

Thenar muscle innervation

Answer 2

Median nerve

Question 3

Thenar muscles

Answer 3

Opponens pollicis
Flexor pollicis brevis
Abductor pollicis brevis

Question 4

Opponens pollicis

Origin

Answer 4

Tubercle of the trapezium

Question 5

Opponens pollicis

Insertion

Answer 5

Lateral margin of the metacarpal of the thumb

Question 6

Opponens pollicis

Innervation

Answer 6

Median nerve

Question 7

Opponens pollicis

Function

Answer 7

Abducts the thumb

Question 8

Flexor pollicis brevis

Origin

Answer 8

Tubercle of the trapezium

Question 9

Flexor pollicis brevis

Insertion

Answer 9

Base of the proximal phalanx of thumb

Question 10

Flexor pollicis brevis

Innervation

Answer 10

Median nerve
(Deep head = ulnar nerve)

Question 11

Flexor pollicis brevis

Function

Answer 11

Flexes the MCPJ

Question 12

Abductor pollicis brevis

Origin

Answer 12

Tubercle of trapezium and scaphoid

Question 13

Abductor pollicis brevis

Insertion

Answer 13

Lateral side of proximal phalanx of thumb

Question 14

Abductor pollicis brevis

Innervation

Answer 14

Median nerve

Question 15

Abductor pollicis brevis

Function

Answer 15

Abducts the thumb

Question 16

Thypothenar muscle innervation

Answer 16

Ulnar nerve

Question 17

Hypothenar muscles

Answer 17

Opponens digiti minimi
Abductor digiti minimi
Flexor digiti minimi

Question 18

Opponens digiti minimi

Origin

Answer 18

Hook of hamate

Question 19

Opponens digiti minimi

Insertion

Answer 19

Medial margin of metacarpal V

Question 20

Opponens digiti minimi

Innervation

Answer 20

Ulnar nerve

Question 21

Opponens digiti minimi

Function

Answer 21

Rotates little finger towards palm (provides opposition)

Question 22

Abductor digiti minimi

Origin

Answer 22

Pisiform

Tendon of flexor carpi ulnaris

Question 23

Abductor digiti minimi

Insertion

Answer 23

Base of proximal phalanx of little finger

Question 24

Abductor digiti minimi

Innervation

Answer 24

Ulnar nerve

Question 25

Abductor digiti minimi | Function

Answer 25

Abducts little finger

Question 26

Flexor digiti minimi | Origin

Answer 26

Hook of hamate

Question 27

Flexor digiti minimi | Insertion

Answer 27

Base of proximal phalanx of little finger

Question 28

Flexor digiti minimi | Innervation

Answer 28

Ulnar nerve

Question 29

Flexor digiti minimi | Function

Answer 29

Flexes the MCPJ

Question 30

Central muscles innervation

Answer 30

Innervated by ulnar nerve (except lateral 2 lumbricals = median nerve)

Question 31

Central muscles

Answer 31

``` Lumbricals (x4) Dorsal interossei (x4) Palmar interossei (x3) Palmaris brevis Adductor pollicis (radial artery passes between the 2 heads) ```

Question 32

Lumbricals | Number

Answer 32

4

Question 33

Lumbricals | Origin

Answer 33

Tendon of flexor digitorum profundus

Question 34

Lumbricals | Insertion

Answer 34

Extensor hood of each finger

Question 35

Lumbricals | Innervation

Answer 35

Lateral 2 = median nerve | Medial 2 = ulnar nerve

Question 36

Lumbricals | Function

Answer 36

Flex at MCPJ | Extend at IPJ

Question 37

Dorsal interossei | Number

Answer 37

4

Question 38

Dorsal interossei | Origin

Answer 38

Lateral and medial surfaces of the metacarpals

Question 39

Dorsal interossei | Insertion

Answer 39

Extensor hood and proximal phalanx of each finger

Question 40

Dorsal interossei | Innervation

Answer 40

Ulnar nerve

Question 41

Dorsal interossei | Function

Answer 41

Abducts fingers at MCPJ

Question 42

Palmar interossei | Number

Answer 42

3

Question 43

Palmar interossei | Origin

Answer 43

Medial or lateral surface of metacarpals

Question 44

Palmar interossei | Insertion

Answer 44

Extensor hood and proximal phalanx of the same fingers

Question 45

Palmar interossei | Innervation

Answer 45

Ulnar nerve

Question 46

Palmar interossei | Function

Answer 46

Adduct fingers at MCPJ

Question 47

Palmaris brevis | Origin

Answer 47

Palmar aponeurosis and flexor retinaculum

Question 48

Palmaris brevis | Insertion

Answer 48

Dermis on medial side of hand

Question 49

Palmaris brevis | Innervation

Answer 49

Ulnar nerve

Question 50

Palmaris brevis | Function

Answer 50

Deepens curvature of hand improving grip | Wrinkles skin

Question 51

Adductor pollicis | Radial artery

Answer 51

Radial artery passes between the 2 heads

Question 52

Adductor pollicis | Origin

Answer 52

Metacarpal III | Capitate

Question 53

Adductor pollicis | Insertion

Answer 53

Base of proximal phalanx of thumb

Question 54

Adductor pollicis | Innervation

Answer 54

Ulnar nerve

Question 55

Adductor pollicis | Function

Answer 55

Adducts thumb