Human Anatomy - Muscles

Occipitofrontalis

Origin: Galea Aponeurotica

Insertion: Skin over orbits

Action: Elevate eyebrows

Orbicularis oculi m.

Origin: orbit (medial wall)

Insertion: Skin of eye

action: close (wink)

Procerus m.

Origin: Bridge of nose

Insertion: Skin between eyes

action: Depress eyebrow

Nasalis m.

Origin: maxilla

Insertion: Nasal Cartilage

Action: Compress nares

Levator labii superioris m.

Origin: maxilla

Insertion: superior lip

Action: elevate

Levator anguli oris m.

Origin: Maxilla

Insertion: Corner of mouth

Action: Elevate (smile)

Zygomaticus major m.

Origin: Zygomatic arch

Insertion: Corner of mouth

Action: Elevate (smile)

Zygomaticus minor m.

Origin: Zygomatic arch

Insertion: Corner of mouth

Action: Elevate (smile)

Buccinator m.

Origin: Maxilla/Mandible

Insertion: Corner of mouth Action: Compress cheeks (whistle)

Orbicularis oris m.

Origin: Mouth fascia

Insertion: Corner of mouth Action: Compress lips (kiss)

Depressor anguli oris m.

Origin: Mandible

Insertion: Corner of mouth Action: Depress

Depressor labii inferioris m.

Origin: Mandible

Insertion: Inferior lip

Action: Depress (pout)

Mentalis m.

Origin: Mandible

Insertion: Skin of chin

Action: Elevate

Risorius m.

Origin: Cheek fascia

Insertion: Corner of mouth Action: Draw posteriorly

Temporalis m.

Origin: Temporal

Insertion: Coronoid process Action: Elevate

Masseter m.

Origin: Zygomatic arch

Insertion: Mandible (angle) Action: Elevate

Medial pterygoid m.

Origin: Sphenoid

Insertion: Mandible

Action: Depress, Lateral Movement

Lateral pterygoid m.

Origin: Sphenoid

Insertion: Mandible

Action: Depress, Lateral Movement

Platysma m.

Auricularis m.

Origin: Temporal fascia

Insertion: Pinna of ear

Action: Move pinna

Dilator nasi

Origin: Cartilage of nose

Insertion: Skin of nose

Action: Enlarge nares

Stylohyoid m.

Origin: Styloid process

Insertion: Hyoid

Action: Elevate, retract

Digastric (two bellies)

Origin: Temporal/Mandible

Insertion: Hyoid

Action: Elevate

Mylohyoid m.

Origin: Mandible

Insertion: Hyoid

Action: Elevate

Geniohyoid m.

Origin: Mandible

Insertion: Hyoid

Action: Protract

Sternohyoid m.

Origin: Clavicle/sternum

Insertion: Hyoid

Action: Depress

Omohyoid (two bellies) m.

Origin: Clavicle/scapula

Insertion: Hyoid

Action: Depress

Thyrohyoid m.

Origin: Thyroid cartilage

Insertion: Hyoid

Action: Depress, Elevate larynx

Sternothyroid m.

Origin: Sternum

Insertion: Thyroid Cartilage Action: Depress

Hyoglossus m.

Origin: Hyoid

Insertion: Tongue (Lateral) Action: Depress, Pull inferior

Genioglossus m.

Origin: Mandible

Insertion: Tongue (Inferior) Action: Protrude, Pull inferior

Styloglossus m.

Origin: Styloid process

Insertion: Tongue

Action: Pull superior

Sternocleidomastoid m.

Origin: Sternum/Clavicle

Insertion: Mastoid Process

Action: Flex, Rotate

Splenius capitis m.

Origin: Spinous process

Insertion: Occipital/Mastoid

Action: Extend, Rotate

Semispinalis capitis m.

Origin: Transverse process

Insertion: Occipital

Action: Extend, Rotate

External intercostals m.

Origin: Ribs

Insertion: Ribs

Action: Elevate

Internal intercostal m.

Origin: Ribs

Insertion: Ribs

Action: Depress

External obliques m.

Origin: Ribs

Insertion: Linea alba

Action: Compress/laterally Flex Vertebral Column

Internal obliques m.

Origin: Ilium/ vertebrae

Insertion: Ribs

Action: Compress/laterally Flex Vertebral Column

Transverse abdominis m.

Origin: Ilium/ vertebrae/ ribs

Insertion: Sternum/linea alba

Action: Compress

Rectus abdominis m.

Origin: Pubis

Insertion: Ribs/sternum

Action: Flex

Quadratus lumborum m.

Origin: Ilium (crest)

Insertion: Ribs/transverse process

Action: Lateral flexion

Iliocostalis thoracis m.

Origin: Ribs (inferior)

Insertion: Ribs/transverse process

Action: Stabilize

Iliocostalis lumborum m.

Origin: Ilium (crest)

Insertion: Ribs (inferior)

Action: Extend

longissimus thoracis m.

Origin: Transverse process

Insertion: Transverse process

Action: Extend

Spinalis thoracis m.

Origin: Spinous process

Insertion: Spinous process

Action: Extend

Trapezius m.

Origin: Occipital/vertebrae

Insertion: Spine

Action: Elevate, Depress, Adduct

Pectoralis minor m.

Origin: Ribs

Insertion: Coracoid process

Action: Depress

Serratus anterior m.

Origin: Ribs

Insertion: Vertebral border

Action: Abduct

Levator scapulae m.

Origin: Vertebrae

Insertion: Vertebral border

Action: Elevate

Rhomboids mm.

Origin: Vertebrae

Insertion: Vertebral border

Action: Adduct

Pectoralis major m.

Origin: Clavicle/sternum/rib

Insertion: Humerus prox. end

Action: Adduct, flex

Deltoid m.

Origin: Clavicle/scapula

Insertion: Humerus prox. end

Action: Abduct, flex, extend

Latissimus dorsi m.

Origin: Vert/sacrum/ilium

Insertion: Humerus prox. end

Action: Extend, adduct

Subscapularis m.

Origin: Subscapular fossa

Insertion: Humerus prox. end

Action: Medial rotation

Teres major m.

Origin: Inferior angle

Insertion: Humerus prox. end

Action: Medial rotation, extend, adduct

Teres minor m.

Origin: Axillary border

Insertion: Humerus prox. end

Action: Lateral rotation, extend, adduct

Infraspinatus m.

Origin: Infraspinous process

Insertion: Humerus prox. end

Action: Lateral rotation

Supraspinatus m.

Origin: Supraspinous process

Insertion: Humerus prox. end

Action: Abduct

Coracobrachialis m.

Origin: Coracoid process

Insertion: Humerus shaft

Action: Flex, adduct

Biceps brachii m.

Origin: Glenoid/Coracoid pro.

Insertion: Radius proximal end

Action: Flex

Brachialis m.

Origin: Humerus shaft

Insertion: Ulna proximal end

Action: flex

Triceps brachii m.

Origin: Scapula/humerus prox

Insertion: Ulna proximal end

Action: extend

Brachioradialis m.

Origin: Humerus distal end

Insertion: Radius distal end

Action: Flex

Pronator teres m.

Origin: Humerus distal end

Insertion: Radius shaft

Action: Pronate, Medial rotation

Flexor carpi radialis m.

Origin: Humerus distal/CFT

Insertion: Metacarpals

Action: Flex and abduct

Palmaris longus m.

Origin: Humerus distal/CFT

Insertion: Palmar aponeurosis

Action: Flex forearm and hand

Flexor carpi ulnaris m.

Origin: Humerus distal/CFT

Insertion: Carpals/metacarpals

Action: Flex and adduct hand

Extensor carpi ulnaris m.

Origin: Humerus distal/CET

Insertion: Metacarpals

Action: Extend and adduct hand

Extensor digitorum m.

Origin: Humerus distal/CET

Insertion: Phalanges

Action: Extend hand and digits

Extensor digiti minimi m.

Origin: Humerus distal/CET

Insertion: Phalanges

Action: Extend hand and little finger

Extensor carpi radialis m.

Origin: Humerus distal/CET

Insertion: Metacarpals

Action: Extend and abduct hand

Flexor digitorum m.

Origin: Hum/rad/ulna

Insertion: phalanges

Action: Flex forearm, hand, digits

Abductor pollicis longus m.

Origin: radius/ulna

Insertion: metacarpal of pollex

Action: abducts hand and pollex

Extensor pollicis brevis m.

Origin: radius

Insertion: pollex

Action: Abducts hand, extend pollex

Extensor pollicis longus m.

Origin: ulna

Insertion: pollex

Action: abducts hand, extend pollex

Tensor fasciae latae m.

Origin: ant. sup. iliac spine

Insertion: illiotibial tract

Action: Flex, abduct

Gluteus maximus m.

Origin: illium/sacrum

Insertion: femur proximal end

Action: extend, rotate

Gluteus medius/minimus m.

Origin: ilium

Insertion: femur proximal end

Action: abduct, rotate

Psoas major m.

Iliacus m.

Iliopsoas m.

Origin: ilium/vertebrae

Insertion: femur proximal end

Action: flex

Piriformis m.

Origin: sacrum

Insertion: femur proximal end

Action: abduct, rotate

Obturator internus m.

Origin: obturator foramen edge

Insertion: femur proximal end

Action: abduct, rotate

Sup./inf. gemellus m.

Origin: ischium

Insertion: femur proximal end

Action: abduct, rotate

B and C

Quadratus femoris m.

Origin: ischium

Insertion: femur proximal end

Action: abduct, rotate

Pectineus m.

Origin: pubis

Insertion: femur proximal end

Action: adduct

Adductors (group) mm.

Origin: pubis

Insertion: femur shaft

Action: adduct

Biceps femoris m.

Origin: ischium/femur shaft

Insertion: fibula prox. end

Action: extend femur, flex leg

Semitendinosus m.

Origin: ishum

Insertion: tibia prox. end

Action: extend femur, flex leg

Semimembranosis m.

Origin: ischium

Insertion: tibia prox. end

Action: extend femur, flex leg

Rectus femoris m.

Origin: ant. inf. iliac spine

Insertion: tibia prox. end

Action: flex femur, extend leg

Sartorius m.

Origin: ant. sup. iliac spine

Insertion: tibia prox. end

Action: flex femur and leg

Gracilis m.

Origin: pubis

Insertion: tibia prox. end

Action: adduct femur, flex leg

Vastus lateralis m.

Origin: femur

Insertion: tibia prox. end

Action: extend

Vastus intermedius m.

Vastus medialis m.

Origin: femur

Insertion: tibia prox. end

Action: extend

Gastrocnemius m.

Origin: femur distal end

Insertion: calcaneus

Action: flex leg, plantarflexion

Plantaris m.

Origin: femur distal end

Insertion: calcaneus

Action: flex leg, plantarflexion

Soleus m.

Origin: tibia prox. end/ fibula

Insertion: calcaneus

Action: plantarflexion