AP Unit 2 OIF Wasit Up

sternocleidomastoid origin

manubrium of sternum and clavicle

sternocleidomastoid insertion

mastoid process

sternocleidomastoid function

flexing the neck when both are contracted

turns head when only one side contracts

scalene origin

cervical vertebra

scalene insertion

ribs 1 and 2 sc

scalene function

lift ribs upwards

splenius origin

spinous process of vertebra

splenius insertion

mastoid process

splenius function

extends the neck

semispinalis origin

transverse process of cervical and thoracic vertebra

semispinalus insertion

occipital bone

semispinalus function

stablization —>extend or hyperextend neck

erector spinas origin

processes of vertebra and mastoid process

erector spinas insertion

iliac crest and lower vertebra

erector spinas function

stabilization

intercoastal origin and insertion

runs from one rib to the next in opposite direction

intercoastal function

lift and compresses ribcage during breathing d

diaphragm origin

lumbar vertebra

diaphragm insertion

central tendon

diaphragm function

breathing for inhaling

rectus abdominis origin

pubic crest

rectus abdominis insertion

xyphoid process of sternum

rectus abdominis function

flexing at the waist

transverse abdominis origin

lumbar fascia and iliac crest

transverse abdominis insertion

Linea alba and pubic crest

transverse abdominis function

compress abdominal cavity

internal obliques origin

lumbar fascia and illiac crest

internal obliques insertion

lower ribs and linea alba

internal obliques function

flexes waist

• side crunch when only 1 side contracts

external obliques origin

lower ribs

external obliques insertion

iliac crest and linea alba

external obliques function

flex waist (rotation of waist when one side is contracted)

deltoid origin

clavicle and acromion

deltoid insertion

deltoid tuberosity on humerus

deltoid function

abduct the arm

pectoralis major origin

clavicle, sternum and ribs

pectoralis major insertion

greater tubercle of humerus

pectoralis major function f

adduct arm and rotates medially

pectoralis minor origin

ribs

pectoralis minor insertion

coracoid process of scapula

pectoralis minor function

move scapula forward

trapezius origin

occipital bone and cervical/thoracic vertebra

trapezius insertion

spine and acromion of scapular

trapezius function

lifts shoulders

latissimus dorsi origin

thoracic and lumbar vertebra and iliac crest

latissimus dorsi insertion

proximal end of humerus (under deltoid)l

latissimus dorsi function

adducts the arm (rotate posteriorly)

levator scapula origin

transverse process of cervical vertebra

levator scapula insertion

medial border of scapula

levator scapula function

stabilize scapular

brachioradialis origin

condyle of humerus

brachioradialis insertion

distal lateral radius

brachioradialis function

flex elbow and rotate forearm

bicep branchii origin

coracoid process and glenoid cavity

bicep branchii insertion

radial tuberosity

bicep branchii function

flex elbow

Cora brachialis origin

coracoid process

Cora brachialis insertion

distal humerus

Cora brachialis function

adduct arm

tricep brachii origin

acromion and head of humerus

tricep brachii insertion

olecranon process of ulna

tricep brachii function

extend elbow