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Muscle Origins/Insertions/Function
muscles with origins, insertions, and function
58
Anatomy
Undergraduate 2
04/15/2011

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Term
Orbicularis Oculi
Definition
O-Frontal and Maxillary Bone
I-Skin around eye
F-Closes Eye
Term
Orbicularis Oris
Definition
O-muscle near mouth/cheeks
I-Skin of central lips
F-Protrudes lips
Term
Zygomaticus Major and Minor
Definition
O-Zygomatic bone
I-Orbicularis Oris
F-smiling
Term
Occipitalis
Definition
O-Occipital Bone
I-Galea Aponeurotical
F-pulls scalp posteriorly
Term
Frontalis
Definition
O-Galea Aponeurotica
I-skin, muscle around eye
F-raise eyebrows
Term
Masseter
Definition
O-Maxilla and Zygomatic arch
I-Angle and Ramus of Mandible
F-closes jaw
Term
Temporalis
Definition

O-temporal bone

I-coronid process of mandible

F-Closes jaw

Term
Sternocleidomastoid
Definition
O-Sternum and Clavicel
I-Mastoid Process
F-contraction of both draws head forward
Term
Rectus Abdominus
Definition
O-pubic crest and pubic symphyis
I-cartilage 5,6,7 ribs and xiphoid proc.
F-Flexes and rotate lumbar region of vert. column
Term
Trapezius
Definition
O-occipital bone, spines of cerv/thoracic vert.
I-clavicle, acromion, spine of scapula
F-shrug shoulders
Term
Pectoralis Major
Definition
O-clavicle, sternum, cart of 2-6 ribs
I-greater tubercle of humerus
F-arm flexion, adducts arm
Term
Latissumus dorsi
Definition
O-spines of thoracic/lumbar vert, crests of sacrum and ilium
I-intertubercle groove of humerus
F-arm extension
Term
Deltoid
Definition
O-Acomion process/spine of scapula, clavicle
I-deltoid tuberosity of humerus
F-arm abduction, flex and extend humerus
Term
Biceps Brachii
Definition
O-coracoid process and tubercle above glenoid cavity of scapula
I-radial tuberosity
F-flexes elbow joint, supinates forearm
Term
Triceps Brachii
Definition
O-Tubercle below glenoid cavity of scapula, lateral and medial surfaces of humerus
I-Olecranon process of ulna
F-extends forearm
Term
Gluteus maximus
Definition
O-Iliac crest, sacrum, and coccyx
I-Gluteal Tuberosity of femur
F-extends and rotates thigh laterally
Term
Sartorius
Definition
O-Iliac spine
I-Medial surface of tibia
F-flexes, abducts, laterally rotates thigh, cross leg position, flexes knee
Term
Gracilis
Definition
O-lower edge of pubic symphysis
I-medial surface of tibia
F-adduct, flexes thigh, medially rotates leg
Term
Rectus Femoris
Definition
O-spine of ilium and acetebulum
I-tibial tuberosity
F-extends knee, flexes thigh at hip
Term
Gastrocnemius
Definition
O-lateral and medial condyles of femur
I-calcaneus
F-plantar flex foot and flex leg
Term
Buccinator
Definition
F-compresses cheek inward
Term
Platysma
Definition
F-tenses skin of neck
Term
Mentalis
Definition
F-pouts
Term
Corrugator
Definition
F-draws eyebrows together
Term
Digastric (F)
Definition
F-elecates hyoid, depresses mandible
Term
External Oblique (F)
Definition
F-compresses abdomen
Term
Internal Oblique (F)
Definition
compresses abdomen
Term
Transverse Abdominis (F)
Definition
fibers run horizontally
F-compresses abdomen
Term
Diaphragm (F)
Definition
F-prime mover of inspiration
Term
External Intercostals (F)
Definition
fibers run obliquely downward and forward toward sternum
F-elevate ribs during inspiration
Term
Internal Intercostals (F)
Definition
fibers run deep and at right angles to external intercostals
F-depresses ribs during expiration
Term
Levatator scapula (F)
Definition
deep to trapezius
F-elevates, adducts scapula
Term
Serratus anterior (F)
Definition
beneath and inferior to pectoral muscles on lateral rib cage
F-moves scapula forward, rotates it upward
Term
Pectoralis minor (F)
Definition
flat thin muscle deep to pect major
F-draws scapula down, rotates shoulder upward
Term
Rhomboideus major (F)
Definition
deep to trapezius, runs from vertebral column to scapula
F-pulls scapula medially
Term
Supraspinatus (F)
Definition
rotator cuff muscle
F-helps deltoid muscle, abducts upper arm
Term
Infrasinatus (F)
Definition
rotator cuff muscle
F-stabilizes shoulder joint, rotates humerus laterally
Term
Brachialis (F)
Definition
immediately deep to biceps muscle
F-major forearm flexor
Term
Brachioradialis (F)
Definition
connects to radius
F-flexes forearm
Term
supinator (F)
Definition
deep muscle of posterior aspect of elbow
F-supinates forearm and hand
Term
Pronator teres (F)
Definition
seen between brachioradialis and flexor carpi ulnaris (forms v with supinator)
F-pronates forearm and hand
Term
Flexor Carpi Radialis F
Definition
F-flexes and abducts the wrist
Term
flexor carpi ulnaris F
Definition
flexes and adducts the wrist
Term
extensor carpi radialis longus (F)
Definition
extends and abducts wrist
Term
Extensor carpi radialis brevis (F)
Definition
extends and abducts wrist
Term
Palmaris longus (F)
Definition
flexes wrist
Term
Extensor carpi ulnaris (F)
Definition
extends and adducts wrist
Term
gluteus med and min F
Definition
abducts and rotates thigh medially
Term
psoas major (F)
Definition
flexes and rotates thigh laterally
Term
Tensor fascia latae F
Definition
flexes and abducts thigh, rotates thigh medially
Term
adductor longus F
Definition
adducts thigh, flexes and medially rotates leg
Term
Vastus intermedius F
Definition
extend knee
Term
vastus medialis F
Definition
extend knee
Term
biceps femoris F
Definition
most lateral muscle of hamstring
F-extend thigh and flex knee
Term
semitendinosus F
Definition
extend thigh and flex knee
Term
semimembranous F
Definition
extend thigh and flex knee
Term
tibialis anterior F
Definition
prime mover of dorsiflexion
Term
soleus F
Definition
plantar flexes foot
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