Download extends upper arm

MUSCLES
*Zygomaticus smile
*Sternocleidomastoid flexes and rotates the
head
Allows us to turn our heads from side to
side, nod
*Pectoralis Major flexes upper arm
Abduct/adduct arm across the chest
MUSCLES

Deltoid abducts and extends
upper arm
also a site for an “IM” injection
Intramuscular

Biceps flexes lower arm
MUSCLES

Rectus Abdominis allows you to
-bend forward at the waist
“rectus” means straight
-compresses abdominal area
“6 pack”

Sartorius flexes and rotates the
thigh
makes an “S” across the femur
MUSCLES

Tibialis anterior flexes the foot
-allows us to walk on our heels

“Quads” group rectus femoris
-extends the lower leg
MUSCLES

External abdominal obliques
-allow us to bend side to side at the
waist
-use the obliques, diaphragm and the
intercostal muscles to breathe
MUSCLES



Trapezius major muscles of upper
back
-pulls shoulders back, extends the
head
Triceps extends the lower arm
Latissimus dorsi major muscles of lower
back
-most of all back movements
MUSCLES

Gluteus medius triangle shaped
muscle on hip area
IM site

Gluteus Maximus “butt cheeks”
-extends and rotates the femur
outward
MUSCLES



“Hamstring” group
Semitendinosus
-flexes, extends and abducts the
thigh
Gastrocnemius “calf muscle”
-flexes lower leg/extend foot
-points toes, allows us to walk
on our tiptoes
Achille’s Tendon anchors the
gastrocnemius to the calcaneus
-if it is cut or damaged, we can’t walk