Cheek Presses cheek against molar teeth

attach to the Maxillary bone and the mandible bone

Frontalis

Front of Forehead Draws scalp forward

Action: raises eyebrows, wrinkles forehead

No bony attachments

Occipitalis

Back of the head

Action: Draws scalp backwards

occipital bone to the mastoid part of the temporal bone

Orbicularis oris

Around the mouth

Compresses and purses lips (kiss muscle)

Orbicularis oculi

Action

Around the eye

Closes eye (blink muscle)

Platysma

Action

Under and around the chin

Pulls lower lip inferiorly, tense skin of neck

Fascia of deltoid and pectoralis major muscles and acromion of scapula

to

Skin of cheek and mandible

Zygomaticus

Action

Pulls corners of mouth superiorly

smiling muscle

Zygomatic bone to the skin of the lip

Temporalis

Orgin

Insertion

Action

Orgin: Paretal and frontal bones (temoral fossa)

Insertion: Coronoid process of mandible

Action: Elevates and retracts mandible

Masseter

Origin

Insertion

Action

Origin: Zygomatic arch

Insertion: Angle and ramus of mandible

Action: Elevates and protracts mandible

Sternocleidomastoid

Origin

Insertion

Action

Origin: Sternum and clavicle

Insertion: Mastoid process of temporal bone

Action:

One side: lateral flextion with rotation of head to opposite side

both sides: flexes head and neck

Splenius capitis

Origin 

Insertion

Action

Origin: Ligamentum nuchae (the connective tissue covering the spinal processes of the cervical vertebrae)

Insertion: Occipital bone

Action: One side: turns head to same side (rotation)

Both sides: extends head & neck

External intercostals

Action

Internal intercostals

Action

Diaphram Attachment

Action

Central tendon

Contraction depresses (flattens) diaphrapm and expands the thoracic cavity during normal inspiration

External obliques

Action

Both sides: flex vertebral column & compress abdominal wall

One side: lateral flexion of vertebral column

Internal obliques

Action

Both sides: flexes vertebral column & compresses abdominal wall

One side: lateral flexion of vertebral column

Rectus abdominis

Action

Transversus abdomins

Action

Both sides: flexes vertebral column & compresses abdominal wall

One side: lateral flexion of vertebral column

Trapezuis

Action

Superior: elevates clavicle; elevates, retracts, rotates scapula;

inferior; depresses, extends the head

Serratus anterior

action

Pectoralis minor

Action

Supraspinatus

Action

Infraspinatus

Action

Subscapularis

Action

Teres major

 Action

Latissimus dorsi

Action

Extends, adducts, and medially rotates arm

 draws arm inferiorly and posteriorly

(swimming, climbing rope, hammering)

Deltoid

Action

Pectoralis major

Action

Biceps brachii - Long Head

Origin

Insertion

Action

Origin: Supraglenoid tubercle of scapula

Insertion: Radial tuberosity

Action:

Flexes arm (glenohumeral joint)

flexes and supinates forearm (elbow joint)

Biceps brachii - Short Head

Origin

Insertion

Action

Orgin: Coracoid process of scapula

Insertion: Radial tuberosity

Action:

Flexes arm (glenohumeral joint)

flexes and supinates forearm (elbow joint)

Coracobrachialis

Origin

Insertion

Action

Origin: Coracoid process of scapula

Insertion: Medial shaft of humerus

Action: Adducts and flexes arm (glenohumeral joint)

Brachialis

Origin

Insertion

Action

Origin: Distal, anterior surface of humerus

Insertion: Coronoid process of ulna

Action: Flexes forearm (elbow joint)

Triceps brachii - Long head

Origin

Insertion

Action

Origin: Infraglenoid tubercle

Insertion: Olecranon process of ulna

Action:

Extends forearm

assists in arm adduction and extension

stabilizes shoulder joint

Triceps brachii - Lateral head

Origin

Insertion

Action

Origin: Posterior shaft of humerus

Insertion: Olecranon process of ulna

Action: Extends forearm

Triceps brachii - Medial head

Origin

Insertion

Action

Origin: Posterior shaft of humerus distal to radial groove

Insertion: Olecranon process of ulna

Action: Extends forearm

Pronator teres

Action

Attachment (origin)

Action: Pronates hand

Attachment: Medial epicondyle of humerus

Flexor carpi radialis

Action

Attachment (origin)

Action: Flexes wrist and abducts hand

Attachment (origin): Medial epicondyle of humerus

Palmaris longus

Action

Attachment (origin)

Action:

Weak wrist flexor

tenses fascia of palm

Attachment (origin): Medial epicondyle of humerus

Flexor carpi ulnaris

Action

Attachment (origin)

Action: Flexes wrist and adducts hand

Attachment (origin): Medial epicondyle of humerus

Flexor digitorum superficialis

Action

Attachment (origin)

Action: Flexes proximal interphalangeal joint

Attachment (origin): Medial epicondyle of humerus

Brachioradialis

Origin

Insertion

Action

Origin: Lateral supracondylar ridge of humerus

Insertion: Syloid process of radius

Action: Flexes forearm (elbow joint)

Extensor carpi radialis longus

Action

Extensor carpi ulnaris

Action

Adbuctor pollicis longus

Action

Extensor pollicis longus

Action

Sartoris

Origin

Insertion

Action

Origin: Anterior/superior iliac spine

Insertion: Tibial tuberosity, medial side

Action:

Flexes, abducts, and laterally rotates thigh

flexes leg and rotates leg medially (sitting crosslegged on floor)

Rectus femoris

Origin

Insertion

Action

Origin: Anterior/inferior iliac spine

Insertion: Patella via quadriceps tendon and      

           then tibial tuberosity via patellar ligament

Action: extends leg; flexes thigh

Vastus lateralis

Insertion

Action

Insertion: Patella via quadriceps tendon and then tibial tuberosity via patellar ligament

Action: Extends leg

Vastus medialis

Insertion

Action

Insertion: Patella via quadriceps tendon and then tibial tuberosity via patellar ligament

Action: Extends leg

Vastus intermedius

Insertion

Action

Insertion: Patella via quadriceps tendon and then

            tibial tuberosity via patellar ligament

Action: Extends leg

lliacus

Origin

Insertion

Action

Origin: lliac fossa

Insertion: Lesser trochanter of femur

Action: Flexes thigh

Psoas major

Origin

Insertion

Action

Origin: T12 - L5 vertebrae

Insertion: Lesser trochanter of femur

Action: Flexes thigh

Pectineus

Action

Adductor longus

Action

Adductor brevis

 Action

Adductor magnus

 Action

Gracilis

Origin

Insertion

Action

Origin: Inferior ramus and body of pubis

Insertion: Upper medial surface of tibia

Action: Adducts & flexes (weak) thigh; flexes leg

Semitendinous

Origin

Insertion

Action

Origin: Ischial tuberosity

Insertion: Proximal medial

Action: Extends thigh & flexes leg; medially rotates let

Semimembranosus

Origin

Insertion

Action

Origin: Ischial tuberosity

Insertion: Medial condyle of tibia

Action: Extends thigh & flexes leg; medially rotates leg

Biceps femoris (long head)

Origin

Insertion

Action

Origin: Ishial tuberosity

Insertion: Head of fibula

Action: Extends thigh; flexes and laterally rotates leg

Gluteus maximus

Origin

Insertion

Action

Origin: lliac crest, sacrum, coccyx

Insertion: lliotibial tract of tensor fascia lata

Action: Extends thigh; laterally rotates thigh

Gluteus medius

Origin

Insertion

Action

Origin: lliac crest

Insertion: Greater trochaner of femur

Action: Abducts thigh; medally rotates thigh

Gluteus minimus

Origin

Insertion

Action

Origin: Lateral surface of ilium

Insertion: Greater trochanter of femur

Action: Abducts thigh; medially rotates thigh

Tensor fascia latae

Origin

 Insertion

Action

Origin: lliac crest & anterior superior iliac spine

Insertion: lliotibial tract

Action: Abducts thigh; medially rotates thigh

Tibialis anterior

Origin

 Insertion

Action

Origin: Lateral condyle and proximal shaft of tibia

Insertion: Metatarsal I and first (medial) cuneiform

Action: Dorsiflexes foot; inverts foot

Extensor digitorum longus

Action

Extensor hallucis longus

Action

Fibularis (peroneus) longus

Action

Fibularis (peroneus) brevis

Action

Gastrocnemius

Origin

Insertion

Action

Origin: Lateral and medial condyles of femur

Insertion: Calcaneus via calcaneal tendon

Action: Plantar flexes foot and flexes leg

Soleus

Origin

Insertion

Action

Origin: Head and proximal shaft of fibula; medial border of tibia

Insertion: Calcaneus via calcaneal tendon

Action: Plantar flexes foot

Tibialis posterior

Action

Flexor digitorum longus

Action

Flexor hallucis longus

Action

• Framework
• Support
• Protection

                                    of the organs

The surface of a joint at which the ends of the bones meet.