OIANB of the hand

What are the muscles of the Thenar region

Opponens pollicis M

Abductor Pollicics brevis

flexor pollicis brevis

Adductor pollicis

What is the nemonic to rember the muscles in the hand thaht are innervated by the Median nerve and not the Ulnar nerve?

1/2 loaf

What are the muscles in the hand innervated by the median nerve?

1st and 2nd lumbricals

opponens pollicis

abductor pollicis brevis

flexor pollicis brevis

Abductor pollicis brevis orgin

Scaphoid

Trapezium

Flexor retinaculum

abductor pollicis brevis insertion

Base of the proximal phalanx of the thumb

Abductor pollicis brevis action

Abduct the proximal phalanx of the pollux

Abductor pollicis brevis innervation

median

flexor pollicis brevis orgin

flexor retinaculum

flexor pollicis brevis insertion

Base of the proximal phalynx of the thumb

flexor pollicis brevis action

Flexes the MCP joint of the thumb

flexor pollicis brevis innervation

median

opponens pollicis origin

Flexor retinaculum

opponens pollicis insertion

Lateral side of the 1st metacarpal

opponens pollicis action

oppose the thumb

opponens pollicis innervation

median nerve

Adductor pollicis orgin

transverse head

- shaft of the 3rd metacarpal

Oblique head

-base of the 2nd and 3rd metacarpal

Adductor pollicis insertion

Base of the proximal phalanx of the thumb

Adductor pollicis action

Adducts the thumb

Adductor pollicis innervation

Ulnar nerve

What are the muscles of the Hypothenar region

Opponens digiti minimi

Abductor digiti minimi

Flexor digiti minimi

palmaris brevis

abducter digit minimi orgin

Pisiform

abducter digit minimi insertion

base of the proximal phalanx of the 5th digit

abducter digit minimi action

abduct the 5th digit

abducter digit minimi innervation

Ulnar nerve

Flexor digiti minimi orgin

Flexor retinaculum

Flexor digiti minimi insertion

base of proximal phalanx of the 5th digit

Flexor digiti minimi action

Flexes the mcp joint of the 5th digit

Flexor digiti minimi innervation

ulnar

Opponens digiti minimi orgin

flexor retinaculum

Opponens digiti minimi insertion

Medial shaft of the 5th metacarpal

Opponens digiti minimi action

opposes the pinky

Opponens digiti minimi innervation

Ulnar nerve

Palmaris brevis orgin

Palmar aponeurosis

flexor retinaculum

Palmaris brevis insertion

skin of the palm

Palmaris brevis action

corrugates the skin

-aid in grip

Palmaris brevis innervation

Ulnar nerve

What are the deep palmar muscles

Lumbricals

Palmar interosseous

Dorsal interosseous

Lumbricals 1-4 are found where

lateral to medial (1-4)

-first is at the 2nd digit

Lumbricals orgins

Tendonds of the flexor digitorum profundus muscle

Lumbricals insertions

extensor hood of the 2nd - 5th digits

Lumbricals action

flexes the mcp joint of digit 2-5 PRIMARY

Extends the mcp joint of digit 2-5

Lumbricals innervation

1st and 2nd

-Median nerve

3rd and 4th

-Ulnar nerver

Palmar interosseous muscles are found where

lateral to medial 1-3

the first is at the 2nd digit of the hand

Palmar interosseous muscle orgin

Medial shaft of 2nd metacarpal(1st)

Lateral shaft of 3rd and 4th metacarpals(2nd and 3rd)

Palmar interosseous muscle insertion

Extensor expansion of the 2nd, 4th, and 5th digits

Palmar interosseous muscle action

adduct mcp of 2,4, and 5 digits PRIMARY

flexes the mcp of 2,4 and 5 digits

extends te IP joints of 2,4 and 5 digits

Palmar interosseous muscle innervation

Ulnar nerve

Dorsal interosseous muscles are found where

lateral to medial on the metacarpals (1-4)

the 1st is on the 2nd digit

Dorsal interosseous muscles orgin

shafts of 2nd to 5th metacarpals

Dorsal interosseous muscles insertion

extensor hood of the 2nd -4th digit

Dorsal interosseous muscles action

abducts the MCP of 2nd - 4th digit PRIMARY

flexes the mcp of 2-4 digits

extends the IP joints of 2-4 digit

Dorsal interosseous muscles innervation

Ulnar nerve