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Frontalis (function)
moves scalp posteriorly
Occipitalis (function)
moves scalp posteriorly
Buccinator (function)
whistling
orbicularis oculi function
blinking, winking, squinting
Masseter function
chews
Temporalis function
chews
zygomaticus major function
smile
orbicularis oris function
pouts lips
Sternocleidomastoid (origin, insertion, action)
Origin: Sternum
Insertion: Mastoid Process
Action: head Rotation
levator scapulae function
elevates scapula
pectoralis major function
flexing the arm
pectoralis minor function
shrugs shoulder
external intercostals function
elevates ribs in inspiration
internal intercostals function
depress ribs in expiration
Serratias anterior function
stabilizes the scapula
Diaphragm function
respiration
internal obliques function
bending lateral of the spine
external obliques function
bends the spine laterally
Trapezius function
Elevates, depresses, retracts, and rotates the scapula; rotates the arm
rectus abdominus function
flexing the spine
Rhomboideus Major/minor function
adducts and elevates scapula
latissimus dorsi function
Extends, adducts, and medially rotates the arm
Deltoid function
abduction of arm
Teres major function
extends, adducts, and medially rotates arm
Teres minor function
lateral rotation of arm
biceps brachii (origin, insertion, action)
origin: coracoid process
insertion: radius
action: flexes arm
brachialis function
flexes forearms
brachioradialis function
flexes forearm
triceps brachii function
extends forearm
pronator teres function
pronates forearm
flexor carpi radialis function
flexes wrist
flexor carpi ulnaris function
flexes wrist
extensor carpi ulnaris function
extends wrist
extensor carpi radialis longus function
extends wrists
extensor digitorum function
Extends fingers and the wrist
what are the muscles of the rotator cuff? (sits)
- supraspinatus
- infraspinatus
- teres minor
- subscapularis
supraspinatus function
abducts the arm and rotates the arm
Infraspinatus function
abducts the scapula (or shoulder) and rotates the arm
subscapularis function
medial rotation of arm
teres major function
abducts the arm and medially rotates the arm
teres minor function
lateral rotation of arm
gluteus maximus function
abducts hip
tensor fasciae latae function
abducts thigh
what are the muscles of the quadriceps
- rectus femoris
- vastus lateralis
- vastus medialis
- vastus intermedius
rectus femoris (origin, insertion, action)
origin: ilium
insertion: knee
action: extends leg
vastus lateralis function
extends leg
vastus medialis function
extends leg
vastus intermedius function
extends leg
rectus femoris function
extends leg and flexes thigh
How many muscles are in the quadriceps?
4 muscles
What are the muscles of the hamstring?
biceps femoris, semitendinosus, semimembranosus
biceps femoris (origin, insertion, action)
Origin: thigh (ischial tuberosity)
insertion: tibia/fibula
action: flexes leg
Semitendinosus function
flexes leg and extends thigh
Semimembranosus function
extends thigh and flexes leg
gracilis function
adducts thigh
Sartorius function
lateral rotation of thigh and flexes leg at knee
gastrocnemius (origin, insertion, action)
origin: femur
insertion: calcaneus
action: planter flextion
soleus function
plantar flexion
Peroneus Longus function
plantar flexion
tibalis posterior function
plantar flexion
tibialis anterior function
dorsiflexion
flexor digitorum longus function
plantarflexion
extensor digitorum longus function
dorsiflexion
where is dense regular connective tissue found?
tendons and ligaments
where is skeletal tissue located?
attached to bones
what do tendons do?
holds muscle to bone
what do ligaments do?
holds bone to bone
dense irregular tissue (location and function)
- tendons and ligaments
- supports organs
skeletal muscles (voluntary vs involuntary, striations and branching, cells)
- voluntary muscle movement
- has striations but no branching
- long cylinder, multinucleated cells
what is the location and function of skeletal muscles?
- location: bones
- move body by pulling on bones
cardiac muscles
- found in the heart (does not include blood vesicles)
- have intercalated discs (ensure muscle cells contract @ once)
- has striations and branching
what are the location and function of cardiac muscles?
location: heart
function: contracts the heart
smooth muscle
- found in blood vesicles and lining organs
- no branching and striations
- spindle shaped
- runs at an angle
- involuntary muscle movement
Frontalis

Occipitalis

orbicularis oculi

zygomatic major

Buccinator

orbicularis oris

Temporalis

Masseter

Sternocleidomastoid

scalene

pectoralis major

pectoralis minor

serratus anterior

Trapezius

Lavator scapulae

rhomboid major

rhomboid minor

Deltoid

supraspinatus

Infraspinatus

teres minor

teres major

latissimus dorsi

biceps brachii

triceps brachii

Subscapularis

Brachialis
