Hand Muscles

Question 1

Muscles inserting on distal phalanges 2-5

Answer 1

flexor digitorum profundus

Question 2

Muscles inserting on middle phalanges 2-5

Answer 2

flexor digitorum superficialis

Question 3

Muscle inserting on distal phalanx of the thumb

Answer 3

flexor pollicis longus

Question 4

Muscles inserting on pisiform, hamate and 5th metacarple

Answer 4

flexor carpi ulnaris

innervated by ulnar nerve

Question 5

Superficial structures of the palm

Answer 5

hypothenar eminence (pinky)
- AFO
thenar eminance (thumb)
- AFO

Question 6

Tendon of palmaris longus

Answer 6

Palmar apneurosis

Question 7

intermediate structures of the palm

Answer 7

Long Flexor Tendonds

• flexor digitorum superficialis
• flexor digitorum profundus

Lumbrical Muscles

Question 8

Long flexor tendons travel

Answer 8

UNDER flexor retinaculum

Question 9

Flexor digitorum superficialis and profundus attach

Answer 9

superficialis - middle metacarpals

profundus - distal metacarpals 2-5

Question 10

Deep structures of the palm

Answer 10

Interosseus muscles

Palmar interossei - adduction
Dorsal interossei - abduction of fingers

Question 11

Superficial branch ulnar nerve with respect to ‘flexor retinaculum’

Answer 11

OVER

Question 12

Palmaris Brevis

Answer 12

• Above hypothenar AFO
• attached to palmer apneurosis and inserts on hypotenar skin

**only muscle innervated by the superficial branch of the ulnar nerve

Question 13

Hypothenar eminence muscles

Answer 13

AFO
“ab”ductor digiti minimi (outside)
flexor digiti minimi (middle)
oppenens digit minimi (deep to)

Question 14

Thenar eminence muscles

Answer 14

AFO
“ab”ductor pollicis brevis
flexor pollicis brevis
oppenenes pollicis brevis

Question 15

Thenar eminence origin

Answer 15

• flexor retinaculum

- scaphoid and trapezium bone

Question 16

Thenar eminence insertion

Answer 16

A - proximal phalanx of thumb
F - proximal phalanx of thumb
O - 1st metacarpal

Question 17

Thenar eminence innervation

Answer 17

recurrent median nerve

Question 18

Actions of thenar and hypothenar muscles

Answer 18

A - Abduction
F - Flexion
O - Opposition

(of thumb and 5th digit)

Question 19

Opposition movement definition

Answer 19

bringing the thumb and pinky finger together

Question 20

Hypothenar Eminence origins

Answer 20

A
- pisiform bone

F and O
- flexor retinaculum and hamate bone

Question 21

Hypothenar Eminence insertions

Answer 21

A and F
- Proximal phalanx of digit 5

O
- 5th metacarpal

Question 22

Hypothenar eminence innervation

Answer 22

deep branch of ulnar nerve

Question 23

Adductor pollicis origin

Answer 23

oblique head:

• bases of 2nd and 3rd metacarpal
• capitate

transverse head:
- 3rd metacarpal

Question 24

Adductor pollicis insertion

Answer 24

proximal phalanx of thumb - medial side

Question 25

Addcutor pollicis innervation

Answer 25

deep branch of ulnar nerve

Question 26

adductor pollicis action

Answer 26

adduction of thumb

Question 27

Lumbercals origin

Answer 27

tendons of flexor digitorum profundus

Question 28

muscles originating from tendons of flexor digitorum profundus?

Answer 28

lumbercals

Question 29

Lumbercals insertion

Answer 29

extensor expansions

Question 30

Lumbercals innervation

Answer 30

lateral 2: median nerve medial 2: deep branch of ulnar nerve

Question 31

Lumbercals action

Answer 31

flexion of digits at MCP joints extension of digits at IP joints

Question 32

interossei origin

Answer 32

metacarpal bones

Question 33

interossei insertion

Answer 33

extensor expansions | bases of proximal phalanges

Question 34

interossei innervation

Answer 34

deep branch ulnar nerve

Question 35

dorsal interossei (1-4) action

Answer 35

ABduction of digits from axial line flexion of digits at MCP joint extension of digits at IP joints

Question 36

palmer interossei (1-3) action

Answer 36

ADduction of digits from axial line flexion of digits at MCP joint extension of digits at IP joints

Question 37

muscles that cause: flexion of digits at MCP joint extension of digits at IP joints

Answer 37

``` lumbercals interossei (dorsal and palmer) ```

Question 38

Muscles of hand innervated by 'median nerve'

Answer 38

Lateral 2 Lumbercals Thenar Eminence Muscles - AFO - reccurent median nerve