Identification of the Muscles

orbicularis occuli

orbicularis occuli

origin : frontal and maxillary insertion : tissue and eyelid

zygomaticus

origin : zygomatic bone insertion : skin and muscle of upper lip

orbicular oris

origin : maxilla & mandible insertion : angle of the mouth

buccinator

origin : maxilla & mandible insertion : orbicular oris

platsyma

origin : lower mandible insertion : mandible, pulls lower lip back down

masseter

origin : zygomatic bone insertion : angle & raymus of mandible

temporalis

origin : temporal fossa insertion : coronoid process of mandible

medial pterygoid

origin : sphenoid wing, maxillary insertion : medial surface mandible

lateral pterygoid

origin : greater wing sphenoid insertion : condylar process of mandible

digastric

origin : lower margin of mandible insertion : through hyoid bone

stylohyoid

origin : styloid process of temporal bone insertion : hyoid bone

mylohyoid

origin : medial surface of mandible insertion : hyoid bone & medium bone

sternohyoid

origin : manubrium & medial end clavicle insertion : lower hyoid

sternothyroid

origin : posterior manubrium insertion : thyroid cartilage larynx

omohyoid

origin : superior surface scapula insertion : hyoid bone; inferior border

thyrohyoid

origin : thyroid cartilage insertion : hyoid bone

sternocleidomastoid

origin : manubrium of sternum & medial portion clavicle insertion : mastoid process of temporal bone & superior nuchal line of occipital bone

pectoralis major

origin : clavicle insertion : humerus

pectoralis minor

origin : ribs insertion : coracoid process

deltoid

origin : 1/3 of clavicle insertion : deltoid humerous

diaphragm internal intercostals external instercostals

muscles of respiraton

rectus abdominis

origin : pubic crest and symphysis insertion : xiphoid process and costal cartilage of ribs 5-7

external oblique

origin : anterior surface of lower 8 ribs insertion : linea alba, pubic crest and tubercles, and iliac crest

internal oblique

origin : lumbar fascia, iliac crest, and inguinal ligament insertion : linea alba, pubic crest, and costal cartilage of last ribs

transverse abdominis

origin : inguinal ligaments , iliac crest, cartilage crest of last 5 or 6 ribs, and lumbar fascia insertion : linea alba and pubic crest

triceps brachii

origin : humerus insertion : olecranon and ulna

brachioradialis

origin : distal end of humerus insertion : base of radial styloid process

brachialis

origin : humerus insertion : ulna

scapula

origin : transverse process of the first four vertebrae insertion : medial border of scapula

supinator

origin : humerus and ulna insertion : proximal end of radius

rectus femoris

origin : acetabelum insertion : tibia and patella

gastrocnemius (calf muscle)

origin : femur insertion : calcaneus

sartorius (main muscle of upper thigh)

origin : anterior superior iliac spine insertion : tibia

pectineus (inner thigh muscle)

origin : pectineal line of pubis insertion : femur

infraspinatus

origin : infraspinous fossa of scapula insertion : greater tubercle of humerus

gluteus maximus

origin : dorsal ilium, sacrum, and coccyx insertion : femur

gluteus medius

origin : upper lateral surface of ilium insertion : trochanter of femur

calcaneal tendon

connects muscle of back calf to heel bone