What muscle is responsible for all voluntary movement, generates unconscious movements of breathing?

• Skeletal

• Cardiac

• Smooth

Right atria to right ventricle comes what

• tricuspid

• bicuspid or mitral valve

prevent backflow of blood back into the heart when the ventricles relax

• Atrioventricular valves

• Semilunar valves

prevent backflow of blood into the atria when ventricles contract

• atrioventricular valves

• semilunar valves

4-chambered hair consist of?

• two atria, two ventricles

• two atria, one ventricle

• one atria, two ventricles

deliver blood back to the heart

• Veins

• arteries

• valves

• Atriums

carry blood AWAY from the heart

• Veins

• arteries

• valves

• atrium

From the heart to the rest of the body?

• Pulmonary system

• systemic sytem

blood is pumped from the heart to the lungs and back to the heart in the

• pulmonary system

• systemic sytem

 *Blood is contained within a continuous system of vessels

  *Nutrients, wastes, gases diffuse in and out of

   system

• open-circulatory system

• closed-circulatory system