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Details

BIOL&231
insertions and origins
21
Anatomy
Undergraduate 1
10/21/2011

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Cards

Term
Zygomaticus
Definition
O: zygomatic bone
I: skin and muscle at corner of mouth
Action: reaises lateral corners of mouth upward.
Term
Masseter
Definition
O:Zygomatic arc and maxilla
I: Angle and ramus of mandible
Action:Elevates mandible, and closes the jaw
Term
Lateral rectus
Definition
O: Sphenoid around optic canal
I: Lateral surface of eyeball
Action: Eye looks laterally
Term
Sternocleidomastoid
Definition
O: Manubrium of sternum
I: Mastoid process of temporal bone
Action: Flexion of neck forward
Term
Rectus abdominis
Definition
O: Superior surface of pubis around symphysis
I:Inferior surfaces of costal cartilages and xiphoid process.
Action: Depresses ribs
Term
Pectoralis major
Definition
O:Clavicle
I:Crest of greater tubercle
Action: Flexion, adduction, & medial rotation at shoulder
Term
Pectoralis minor
Definition
O: Anterior superior surfaces of ribs
I: Coracoid process of scapula
Action: draws scapula forward and inferiorly
Term
Latissimus dorsi
Definition

O:Spinous processes & iliac crest.

I:Floor of intertubercular sulcus of humerus

Action: Prime mover of arm flexion; adducts, medially rotates arm

Term
Trapezius
Definition
O: Occipital bone
I: Clavicle and Scapula
Action:Raises, rotates, adducts scapula.
Term
deltoid
Definition
O: Clavicle & scapula
I: Deltoid tuberosity of humerus Action: prime mover of arm flexion
Term
Supraspinatus
Part of rotator cuff
Definition
O: Supraspinous fossa of scapula
I: Greater tubercle of humerus
Action: Initiates abduction of humerus
Term
Triceps brachii
Definition
O: Long head: inferior margin of glenoid cavity.
I: Olecranon process of ulna
Action: forearm extensor
Term
Biceps brachii
Definition
O: Short head from the coracoid process
I: Radial tuberosity
Action: Flexion of elbow and supination of forearm
Term
Brachialis
Definition
O: Anterior, distal surface of humerus
I: Coronoid process of ulna
Action: Forearm flexion
Term
Brachioradialis
Definition
O: Lateral ridge at distal end of humerus
I: Base of styloid process of radius
Action: Synergist in forearm flexion
Term
Tensor fascia latae
Definition
O: iliac crest
I: Iliotibial band
Action: Adducts thigh, medial rotation of thigh.
Term
Rectus femoris
Definition
O: iliac spine
I: Tibial tuberosity via patellar ligament
Action: Extension at knee; flexion at hip
Term
Sartorius
Definition
O: Anterior superior iliac spine
I: Tibial tuberosity
Action: Flexes and rotates thigh laterally; medial rotation of leg.
Term
Biceps femoris
Definition
O: Ischial tuberosity
I: Head of fibula
Term
Gastrocnemius
Definition
O: Medial and lateral condyles of femur
I: Calcaneus via calcaneal tendon
Action: Plantar flexes foot when knee is extended
Term
Tibialis anterior
Definition
O: Lateral condyle and proximal shaft of tibia
I: Base of first metatarsal bone and medial cuneiform bone.
Action: dorsiflexion; inverts foot; supports longitudinal arc of foot
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