Miologia_Greya

2

3

Muscle

Origin

Insertion

Innervation

Function

Palmaris

2

Medial epicondyle of

Palmar aponeurosis of

Median nerve [C7, C8]

Flexes wrist joint; because the

longus

humerus

hand

palmar aponeurosis anchors skin

of the hand, contraction of the

muscle resists shearing forces

when gripping

Flexor carpi

3

Medial epicondyle of

Base of metacarpals II

Median nerve [C6, C7]

Flexes and abducts the wrist

radialis

humerus

and III

Pronator

4

Humeral head—medial

Roughening on lateral

Median nerve [C6, C7]

Pronation

teres

epicondyle and adjacent

surface, midshaft, of

supracondylar ridge; ulnar

radius

head—medial side of

coronoid process

Pronator

8 Linear ridge on distal

Distal anterior surface

Median nerve (anterior

Pronation

quadratus

anterior surface of ulna

of radius

interosseous nerve)

[C7, C8]

1

2

3

4

Muscle

Origin

Insertion

Innervation

Function

Abductor

2 Posterior surfaces of ulna

Lateral side of base of

Posterior interosseous

Abducts carpometacarpal joint

pollicis

and radius (distal to the attachments

metacarpal I

nerve [C7, C8]

of thumb; accessory extensor

longus

of supinator and anconeus) and

of the thumb

intervening interosseous membrane

Extensor

5 Posterior surface of ulna (distal to

Extensor hood of index

Posterior interosseous

Extends index finger

indicis

extensor pollicis longus) and

finger

nerve [C7, C8]

adjacent interosseous membrane

4

2

3

5

Muscle

Origin

Insertion

Innervation

Function

Palmaris brevis

1

Palmar aponeurosis and

Dermis of skin on the

Superficial branch of

Improves grip

flexor retinaculum

medial margin of the hand

the ulnar nerve [C8,

T1]

Dorsal interossei

2

Adjacent sides of

Extensor hood and base

Deep branch of ulnar

Abduction of index,

(four muscles)

metacarpals

of proximal phalanges of

nerve [C8, T1]

middle, and ring

index, middle, and ring

fingers at the

fingers

metacarpophalangeal

joints

Palmar interossei

3

Sides of metacarpals

Extensor hoods of the

Deep branch of ulnar

Adduction of the

(four muscles)

thumb, index, ring, and

nerve [C8, T1]

thumb, index, ring,

little fingers and the

and little fingers at the

proximal phalanx of

metacarpophalangeal

thumb

joints

Adductor pollicis

4

Transverse head—

Base of proximal phalanx

Deep branch of ulnar

Adducts thumb

metacarpal III; oblique

and extensor hood of

nerve [C8, T1]

head—capitate and

thumb

bases of metacarpals II

and III

Abductor pollicis brevis

7

Tubercles of scaphoid and

Proximal phalanx and

Recurrent branch of

Abducts thumb at

trapezium and adjacent

extensor hood of thumb

median nerve [C8, T1]

metacarpophalangeal

flexor retinaculum

joint

Flexor pollicis brevis

8

Tubercle of the trapezium

Proximal phalanx of the

Recurrent branch of

Flexes thumb at

and flexor retinaculum

thumb

median nerve [C8, T1]

metacarpophalangeal

joint

Hypothenar muscles

Opponens digiti minimi

9

Hook of hamate and flexor

Medial aspect of

Deep branch of ulnar

Laterally rotates

retinaculum

metacarpal V

nerve [C8, T1]

metacarpal V

Abductor digiti minimi

10

Pisiform, the pisohamate

Proximal phalanx of little

Deep branch of ulnar

Abducts little finger at

ligament, and tendon of

finger

nerve [C8, T1]

metacarpophalangeal

flexor carpi ulnaris

joint

Flexor digiti minimi brevis

11

Hook of the hamate and

Proximal phalanx of little

Deep branch of ulnar

Flexes little finger at

flexor retinaculum

finger

nerve [C8, T1]

metacarpophalangeal

joint

2

3

4

6

7

9

11

8

10

Muscle

Origin

Insertion

Innervation

Function

Orbital group

Orbicularis oculi

1

Medial palpebral ligament

Lateral palpebral raphe

Facial nerve [VII]

Closes the eyelids

—Palpebral part

gently

—Orbital part

2

Nasal part of frontal bone;

Fibers form an uninter-

Facial nerve [VII]

Closes the eyelids

frontal process of maxilla;

rupted ellipse around

forcefully

medial palpebral ligament

orbit

Corrugator supercilii

3

Medial end of the supercili-

Skin of the medial half of

Facial nerve [VII]

Draws the eyebrows

ary arch

eyebrow

medially and

downward

Nasal group

Nasalis

4

Maxilla just lateral to nose

Aponeurosis across

Facial nerve [VII]

Compresses nasal

—Transverse part

dorsum of nose with

aperture

muscle fibers from the

other side

—Alar part

5

Maxilla over lateral incisor

Alar cartilage of nose

Facial nerve [VII]

Draws cartilage

downward and

laterally opening

nostril

Procerus

6

Nasal bone and upper part

Skin of lower forehead

Facial nerve [VII]

Draws down medial

of lateral nasal cartilage

between eyebrows

angle of eyebrows

producing transverse

wrinkles over bridge of

nose

Depressor septi

7

Maxilla above medial

Mobile part of the nasal

Facial nerve [VII]

Pulls nose inferiorly

incisor

septum

1

3

6

2

4

5

7

Mentalis

3

Mandible inferior to incisor

Skin of chin

Facial nerve [VII]

Raises and protrudes

teeth

lower lip as it wrinkles

skin on chin

Risorius

4

Fascia over masseter

Skin at the corner of the

Facial nerve [VII]

Retracts corner of

muscle

mouth

mouth

Zygomaticus major

5

Posterior part of lateral

Skin at the corner of the

Facial nerve [VII]

Draws the corner of

surface of zygomatic bone

mouth

the mouth upward and

laterally

Zygomaticus minor

6

Anterior part of lateral

Upper lip just medial to

Facial nerve [VII]

Draws the upper lip

surface of zygomatic bone

corner of mouth

upward

Levator labii superioris

7

Infra-orbital margin of

Skin of upper lateral half

Facial nerve [VII]

Raises upper lip; helps

maxilla

of upper lip

form nasolabial furrow

Levator labii

8

Frontal process of maxilla

Alar cartilage of nose

Facial nerve [VII]

Raises upper lip and

superioris alaeque nasi

and upper lip

opens nostril

Levator anguli oris

9

Maxilla below infra-orbital

Skin at the corner of

Facial nerve [VII]

Raises corner of

foramen

mouth

mouth; helps form

nasolabial furrow

Orbicularis oris

10

From muscles in area;

Forms ellipse around

Facial nerve [VII]

Closes lips; protrudes

maxilla and mandible in

mouth

lips

midline

Buccinator

11

Posterior parts of maxilla

Blends with orbicularis

Facial nerve [VII]

Presses the cheek

and mandible;

oris and into lips

against teeth;

pterygomandibular raphe

compresses distended

cheeks

8

6

7

5

9

11

4

2

10

1

3

Muscle

Origin

Insertion

Innervation

Function

Other muscles or groups

Anterior auricular

1

Anterior part of temporal

Into helix of ear

Facial nerve [VII]

Draws ear upward

fascia

and forward

Superior auricular

2

Epicranial aponeurosis

Upper part of auricle

Facial nerve [VII]

Elevates ear

on side of head

Posterior auricular

3

Mastoid process of

Convexity of concha of

Facial nerve [VII]

Draws ear upward

temporal bone

ear

and backward

Occipitofrontalis

4

Skin of eyebrows

Into galea aponeurotica

Facial nerve [VII]

Wrinkles forehead;

—Frontal belly

raises eyebrows

—Occipital belly

5

Lateral part of superior

Into galea aponeurotica

Facial nerve [VII]

Draws scalp

nuchal line of occipital

backward

bone and mastoid

process of temporal

bone

Muscle

Origin

Insertion

Innervation

Function

Levator palpebrae

1

Lesser wing of sphenoid

Anterior surface of tarsal

Oculomotor nerve

Elevation of upper eyelid

superioris

anterior to optic canal

plate; a few fibers to skin

[III]—superior branch

and superior conjunctival

fornix

Superior rectus

2

Superior part of common

Anterior half of eyeball

Oculomotor nerve

Elevation, adduction,

tendinous ring

superiorly

[III]—superior branch

medial rotation of eyeball

Inferior rectus

3

Inferior part of common

Anterior half of eyeball

Oculomotor nerve

Depression, adduction,

tendinous ring

inferiorly

[III]—inferior branch

lateral rotation of eyeball

Medial rectus

4

Medial part of common

Anterior half of eyeball

Oculomotor nerve

Adduction of eyeball

tendinous ring

medially

[III]—inferior branch

Lateral rectus

5

Lateral part of common

Anterior half of eyeball

Abducent nerve [VI]

Abduction of eyeball

tendinous ring

laterally

Superior oblique

6

Body of sphenoid,

Outer posterior quadrant of

Trochlear nerve [IV]

Depression, abduction,

superior and medial to

eyeball (superior surface)

medial rotation of eyeball

optic canal

Inferior oblique

7

Medial floor of orbit

Outer posterior quadrant of

Oculomotor nerve

Elevation, abduction,

posterior to rim; maxilla

eyeball (inferior surface)

[III]—inferior branch

lateral rotation of eyeball

lateral to nasolacrimal

groove

1

2

7

3

5

6

4