HEAD AND NECK
|
Muscle name |
Origin |
Insertion |
Action |
|---|---|---|---|
|
temporalis |
temporal bone |
mandible |
closes jaw, elevates mandible |
|
masseter |
zygomatic bone |
mandible |
closes jaw, elevates mandible |
|
obicularis oris |
maxilla and mandible |
muscle/skin on mouth |
closes lips; kissing, whistling |
|
obicularis oculi |
frontal/maxillary bones |
eyelids |
squinting, blinking |
|
sternocleidomastoid |
sternum |
temporal bone |
head flexion |
TRUNK, ANTERIOR THORAX
|
uscle name |
Origin |
Insertion |
Action |
|---|---|---|---|
|
pectoralis major |
clavicle, sternum, ribs |
humerus |
arm flexion, arm adduction |
|
pectoralis minor |
ribs |
scapula |
movements of ribs and scapula |
|
serratus anterior |
ribs |
scapula |
moves scapula forward, helps raise arm |
|
intercostals |
ribs |
ribs |
movements of rib cage -- breathing |
TRUNK, ABDOMINAL WALL
|
Muscle name |
Origin |
Insertion |
Action |
|---|---|---|---|
|
rectus abdominis |
pubis portion of pelvis |
ribs, sternum |
depresses thorax, flexion of trunk |
|
external oblique |
-- |
-- |
side movements/flexion of trunk |
|
internal oblique |
-- |
-- |
side movements/flexion of trunk |
|
transverse abdominis |
-- |
-- |
side movements/flexion of trunk |
POSTERIOR TRUNK
|
Muscle name |
Origin |
Insertion |
Action |
|---|---|---|---|
|
trapezius |
occipital bone, thoracic vertebrae |
scapula & clavicle |
lifts scapula, braces the shoulder |
|
latissimus dorsi |
vertebrae, ribs |
humerus |
arm extension, arm adduction |
|
splenius capitis |
cervical vertebrae |
occipital bone |
head extension |
MUSCLES CROSSING SHOULDER JOINT
|
Muscle name |
Origin |
Insertion |
Action |
|---|---|---|---|
|
deltoid |
clavicle, scapula |
humerus |
arm abduction |
MUSCLES CROSSING ELBOW JOINT: POSTERIOR MUSCLES
|
Muscle name |
Origin |
Insertion |
Action |
|---|---|---|---|
|
triceps brachii |
scapula, humerus |
ulna |
forearm extension |
MUSCLES CROSSING THE ELBOW JOINT: ANTERIOR MUSCLES
|
Muscle name |
Origin |
Insertion |
Action |
|---|---|---|---|
|
biceps brachii |
scapula, humerus |
radius |
forearm flexion |
|
brachialis |
humerus |
ulna |
forearm flexion |
|
brachioradialis |
humerus |
radius |
forearm flexion |
MUSCLES OF THE ANTERIOR FOREARM: hand and finger flexors
MUSCLES OF THE POSTERIOR FOREARM: hand and finger extensors
MUSCLES CROSSING HIP/KNEE JOINT
|
Muscle name |
Origin |
Insertion |
Action |
|---|---|---|---|
|
sartorius |
coxal bone |
tibia |
flexes, laterally rotates thigh |
| adductor longus | coxal bone | femur | adducts thigh |
| gracilis | coxal bone | femur | adducts thigh |
| rectus femoris | coxal bone | tibia | flexes thigh, extends knee |
| tensor fasciae latae | coxal bone | IT band | abducts thigh |
| gluteus maximus | coxal bone | femur | extends thigh |
| biceps femoris | coxal bone, femur | tibia | extends thigh, flexes knee |
MUSCLES OF THE LOWER LEG
|
Muscle name |
Origin |
Insertion |
Action |
|---|---|---|---|
|
tibialis anterior |
tibia |
metatarsals |
dorsiflexion of foot |
| gastrocnemeus | femur |
tarsals |
plantar flexion of foot |