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Muscle Origins and Insertions
A&P 1 Final
16
Anatomy
Undergraduate 1
12/01/2010

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Cards

Term
zygomaticus major
Definition
O= Zygomatic bone
I= muscle & skin @ angle of mouth
A= elevates corners of mouth
Term
buccinator
Definition
O= maxilla & mandible near molars
I= orbicularis oris
A= compresses cheek
Term
masseter
Definition
O= zygomatic arch
I= angle & ramus of mandible
A= closes mandible
Term
sternocleidomastoid
Definition
O= sternum, clavicle
I= mastoid process of temporal bone
A= abducts, rotates, and flexes head
Term
gastrocnemius
Definition
O= condyles of femur
I= calcaneus
A= plantar flexes foot
Term
rectus femoris
Definition
O= Anterior inferior iliac spine
I= tibial tuberosity
A= Flexes thigh, extends leg
Term
gluteus maximus
Definition
O=outer iliac blade,iliac crest, sacrum
I= gluteal tuberosity of femur
A= extends and laterally rotates thigh
Term
semimembranosus
Definition
O= ischial tuberosity
I= medial condyle of tibia
A= Extends thigh, flexes leg
Term
extensor digitorium
Definition
O= posterior tibia
I= distal phalanges of 2nd-5th digits
A= extends phanlanges/hand
Term
palmaris longus
Definition
O= medial epicondyle of humerus
I= palmar aponeurosis
A= flexes hand
Term
deltoid
Definition
O= clavicle, acromion process
I= deltoid tuberosity of humerus
A= abducts arm, flexes, extends, medially and laterally rotates arm
Term
pectoralis major
Definition
O= clavicle, sternum, cart. ribs 1-7
I= crest of greater tubercle of humerus
A= flexes, adducts and medially rotates arm
Term
pectoralis major
Definition
O= clavicle, sternum, cart. ribs 1-7
I= crest of greater tubercle of humerus
A= flexes, adducts and medially rotates arm
Term
latissimus dorsi
Definition
O= T7-S1-5, iliac crest, ribs 10-12
I= intertubercular grove of humerus
A= extends, adducts and medially rotates arm
Term
infraspinatus
Definition
O= infraspinatus fossa
I= greater tubercle of humerus
A= laterally rotates arm
Term
biceps brachii
Definition
O= glenoid fossa, coracoid
I= radial tuberosity
A= flexes arm & forearm
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