Picking up wastes from cells and delivering them to kidneys and lungs is one of the ___ functions of the circulatory system.

• transport

• homeostasis

• protection

What is ONE of the protective functions of the circulatory system?

What is the name of the sac that encloses the heart?

Which are true about arteries?

• take blood away from the heart

• an example is the vena cava

• they have very strong, muscular walls

• contain ~25% of your blood

How much of your blood is composed of plasma?

• 1%

• 45%

• 55%

• 75%

What is another name for red blood cells?

Tags

NGSS.MS-LS1-3

Which type of white blood cells produce antibodies that remember an infection?

What is the function of platelets?

• carry oxygen

• fight against microorganisms

• initiate clotting

• close damaged blood vessels

If someone has type A blood, what type of antibodies are in their blood?

• A

• B

• Both A and B

• None

Which are true about the chambers of the heart?

• There are 2 atria

• There are 2 ventricles

• The atria have smaller, thinner walls

• The ventricles are at the top