Muscles

Bicep Brachii 2 heads in the front of the humerus

Origins: Scapula

Inserts: Radius

Movement: shoulder flexion, elbow flexion

Brachioradialis front of lower humerus and upper radius

Origin: middle of the humerus on the outside

inserts: radius towards the bottom

movement: elbow flexion

Triceps 3 heads on the back of the humerus

Origins: scapula & back or humerus

Inserts: Ulna

Movement: elbow extension, shoulder extension

Forearm Flexors palm side of forearm

Origins: bottom of humerus, top of radius and ulna

Inserts: metacarpals and philanges (palm side)

Movements: wrist and finger flexion (some elbow flexion)

Forearm Extensors back or hand side of forearm

Origins: bottom of the humerus, top of the radius and ulna

inserts: Metacarpals and philanges on the back side

Movements: wrist and finger extension (some elbow extension)

Deltoids 3 parts -- anterior, middle, posterior, caps the shoulder

Origins: clavicle & scapula

Inserts: middle outside of the humerus

Movement: abduction of shoulder (lifting arm straight the side), horizontal

abduction (moving the arm from straight out in front to straight out to

the side), shoulder flexion, shoulder extension, internal and external

shoulder rotation.

Trapezius (Traps)

Origins: in the back along the cervical and thoracic vertebrae

Inserts: Scapula & clavicle

Movements: shrug shoulders, pulls arms back behind back (i.e. pull-ups) by pulling

the scapulae back towards vertebrae

Latisimus Dorsi (Lats)

Origins: lower 6 thoracic vertebrae, lumbar vertebrae, sacrum, ilium

Inserts: inside of the upper humerus

Movement: shoulder adduction (moving the arm from straight out at the side to

down to the side), horizontal abduction (see deltoids)

Pectoralis Major (Pecs) (Chest)

Origins: clavicle, sternum, 1st six ribs (costal cartilage)

Inserts: inside of the upper humerus

Movement: shoulder flexion, horizontal abduction, internal rotation of shoulder

Erector Spinea

Origins: Ilium, thoracic and lumbar vertebrae, lower 7 ribs

Inserts: ribs, all vertebrae, base of skull

Movement: extension of the spine, lateral trunk flexion

Rectus Abdominus (Abs)

Origins: pubis

Inserts: xiphoid process, 5th, 6th, and 7th ribs

Movement: trunk flexion, lateral trunk flexion

External Obliques muscles on the side of the trunk

Origins: lower 8 ribs

Inserts: top of the ilium (pelvis), pubis(pelvis) and fascia of the rectus abdominus

Movement: Lateral trunk flexion, trunk rotation

Quadriceps (Quads) 4 muscles in front of the femur

Origins: front of the ilium, & top of the femur

Inserts: patella, top of tibia

Movement: hip flexion, knee extension

Tensor Fasciae Latae

Origins: front of the ilium

Inserts: Top of the tibia

Movement: hip flexion, and hip abduction

Hamstrings 3 muscles on the back of the femur

Origins: back of the ilium, back of the ishium, back top of the femur

Inserts: back top of the tibia and fibula

Movement: hip extension, knee flexion

Gluteus Maximus the major muscle of the buttocks.

Origins: back of the Ilium (pelvis) and the sacrum

Inserts: femur and fascial band attaching to tibia

Movement: hip extension and lateral rotation

Gastrocnemius back of the lower leg

Origins: bottom back of the femur

Inserts: heal

Movement: Plantar flexion or the ankle (ankle extension, point toes), some knee

flexion.

Soleus back of the lower leg behind the Gastrocnemius

Origins: upper back of tibia and fibula

Inserts: back of heal

Movement: plantar flexion of the ankle

Tibialis Anterior Front of the lower leg

Origin: upper inside of the tibia

inserts: top first metatarsal and tarsal

Movement: ankle dorsi flexion (flex foot up)