A&P Lab Practical 3

compresses cheeck

buccinator action

raises eyebrows

frontal belly of epicranius action

retracts scalp

occipital belly of epicranius action

elevates (closes) mandible

masseter action

zygomatic arch

masseter origin

ramus of mandible

masseter insertion

protrudes lower lip

mentalis action

closes eyelid

orbicularis oculi action

closes lips

orbicularis oris action

rotates head

sternocleidomastoid action

medial third of clavicle

sternocleidomastoid origin

mastoid process of the temporal bone

sternocleidomastoid insertion

elevates (closes) mandible

temporalis action

temporal fossa

temporalis origin

ramus of mandible

temporalis insertion

extends head; rotates scapula

trapezius action

posterior occipital bone

trapezius origin

spine of scapula

trapezius insertion

elevates corners of mouth in smiling and laughing

zygomaticus major action

zygomatic bone

zygomaticus major origin

superolateral angle of mouth

zygomaticus major insertion

elevates corners of mouth in smiling and laughing

zygomaticus minor action

inspiration

diaphragm action

compresses abdominal wall

external oblique action

elevates ribs

external intercostal action

elevates ribs

internal intercostal action

compresses abdominal wall

internal oblique action

extends humerus; draws shoulder inferiorly

latissimus dorsi action

iliac crest

latissimus dorsi origin

intertubercular sulcus of humerus

latissimus dorsi insertion

flexes humerus

pectoralis major action

clavicle

pectoralis major origin

intertubercular sulcus of humerus

pectoralis major insertion

depresses glenoid cavity

pectoralis minor action

ribs 3-5

pectoralis minor origin

coracoid process of scapula

pectoralis minor insertion

compresses abdominal wall

rectus abdominus action

pubic symphysis

rectus abdominus origin

xiphoid process of sternum

rectus abdominus insertion

rotates scapula

serratus anterior action

compresses abdominal wall

transversus abdominus action

flexes shoulder

deltoid action

clavicle

deltoid origin

deltoid tuberosity of the humerus

deltoid insertion

flexes arm

biceps brachii action

long head: glenoid cavity; short head: Coracoid process

biceps brachii origin

radial tuberosity

biceps brachii insertion

flexes elbow

brachialis action

flexes forearm

brachioradialis action

humerus

brachioradialis origin

styloid process of lateral radius

brachioradialis insertion

flexes wrist

flexor carpi ulnaris action

finger extension

extensor digitorum action

extends wrist

extensor carpi radialis longus action

extends wrist

extensor carpi radialis brevis action

anchors skin and fascia of palmar region and flexes hand 

palmaris longus action

pronation of forearm

pronator teres action

extends humerus

teres major action

inferior angle of scapula

teres major origin

Intertubercular sulcus of humerus

teres major insertion

extends elbow

triceps brachii action

humerus posterior surface

triceps brachii origin

tuberosity of ulna

triceps brachii insertion

supraspinatus, teres major, infraspinatus, subscapularis

which muscles are the rotator cuff muscles?

stabilize shoulder joint

supraspinatus action

supraspinatus fossa of scapula

supraspinatus origin

greater tubercle of humerus

supraspinatus insertion

stabilize shoulder joint

infraspinatus action

infraspinatus fossa of scapula

infraspinatus origin

greater tubercle of humerus

infraspinatus insertion

stabilize shoulder joint

teres minor action

scapula lateral border

teres minor origin

greater tubercle of humerus

teres minor insertion

stabilize shoulder joint

subscapularis action

Subscapular fossa of scapula

subscapularis origin

lesser tubercle of humerus

subscapularis insertion

biceps femoris, semitendinosus, semimembranosus

which muscle are part of the "hamstring group"?

flexes knee

biceps femoris action

ischial tuberosity

biceps femoris origin

head of fibula

biceps femoris insertion

flexes knee

semitendinosus action

ischial tuberosity

semitendinosus origin

proximal medial tibia

semitendinosus insertion

flexes knee

semimembranosus action

ischial tuberosity

semimembranosus origin

medial condyle of tibia

semimembranosus insertion

iliacus and psoas major

the iliopsoas is composed of what two muscles?

hip flexion

iliacus action

iliac crest

iliacus origin

lesser trochanter of femur

iliacus insertion

flex thigh

psoas major action

transverse processes of thoracic 12 to lumbar 5 vertebrae

psoas major origin

lesser trochanter of femur

psoas major insertion

rectus femoris, vastus lateralis, vastus medialis, vastus intermedius

what muscles make up the quadriceps femoris?

extends leg

rectus femoris action

anterior inferior iliac spine

rectus femoris origin

patella

rectus femoris insertion

extends leg

vastus intermedius action

Greater trochanter of femur

vastus intermedius origin

patella

vastus intermedius insertion