CNA Circulatory System

What is the function of the circulatory system?

• To provide nutrients to the whole body

• To maintain homeostasis for the body

• To fight off infection or disease

• To transport nutrients, oxygen, and blood throughout the body

What part of the heart is circled in yellow?

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

What part of the heart is circled in yellow?

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

The arteries carry oxygen rich blood away from the heart.

• True

• False

What do we call the tiny tubes that return blood back to the heart?

• arteries

• chambers

• veins

• ventricles

Your blood is made up of which of the following...

• plasma, red blood cells, blue blood cells

• white and red blood cells

• plasma and platelets

• plasma, red blood cells, white blood cells, and platelets

What ensures the unidirectional flow of blood through the

heart?

• Constant pressure generated by the heart contractions.

• Valves within the heart that prevent backflow of blood.

• Squeezing action of smooth muscle tissue in arterial walls.

• Continuous osmotic outflow of plasma from capillaries.