Circulatory System

Artery: A blood vessel which carries oxygenated blood away from the heart. *Except the Pulmonary artery which carries blood to the heart with no oxygen.

Atrium: The upper two chambers of the heart. Labeled R and L

Ventricles: The lower two chambers of the heart. Labeled R and L

(Note: The Right Atria and Ventricle of the heart has no oxygen while the left Atria and ventricle contains oxygen)

Capillaries: Smallest vessels in the body where oxygen, carbondioxide, minerals and vitamin are exchanged

Platlets: Keeps you from bleeding alot by forming a blood clot

Red Blood Cells: Carry hemoglobin which transports oxygen

White Blood Cells: The body defense mechanism to help fight off bacteria and infection

Useful Sites:

Anatomical Positions

Anterior: Front of the body

Posterior: Back of the body

Cephalic: Head or towards the head

Caudad: Feet or towards the feet

Trans: Across

Pronation: Hands turned with palm facing downward

Supination: Hands turned with palm facing upward

Inversion: Bottom of heels turned inward

Eversion: Bottom of heels turned outward

Flexion: Bending at the joint

Extension Straightening at the joint

Prone: Lying face down

Supine: Lying on your back

Lateral: The sides of the body or moving to the sides of the body


Bicep: Two muscles of the upper arm in the front which causes bending at the joint (elbow)

Tricep: Three muscles of the upper arm at the back causing extension of the elbow joint.

Deltoid: Muscles of the shoulder causing lifting of the arm to the front, side, and back.

Pecs (Pectoralis Muscles): Muscles of the chest brings the arm across the chest or into the chest area-pushing muscles

Lats (Latissimus Dorsi): Brings arms into the body-pulling muscles

Quads (Quadraceps): Four muscles of the upper leg causing extension at the knee joint – kicking muscles

Hamstrings (Biceps Femoris): Two muscle at the back of the upper leg causing bening at the knee joint


Useful sites:

Human Anatomy –

Human Anatomy -

Heart –