Circulatory system and blood

A function of the white blood cells is to

• transport oxygen to body cells

• protect the body against pathogens

• produce hormones that regulates cell communication

• carry glucose to body cells

A general term that describes the force blood exerts against the walls of vessels is called _____________.

• ventricular pressure
• blood pressure
• atriaoventricular pressure
• pulse pressure

This is the liquid substance that makes up 50% of our blood (90% water).

• Plasma
• White Blood Cells
• Platelets
• Red Blood Cells

This component of our blood helps fight infection and disease in our body.

• Plasma
• White Blood Cells
• Platelets
• Red Blood Cells

These are cell fragments that help form clots to stop bleeding.

• Plasma
• White Blood Cells
• Platelets
• Red Blood Cells

These help transport oxygen and contain hemoglobin.

• Plasma
• White Blood Cells
• Platelets
• Red Blood Cells

Which activity is NOT good for cardiovascular health.

• Exercising regularly
• Eating a diet low in saturated fats
• Eating a diet low in trans fats 
• Smoking

What is the main organ of the circulatory system?

• small intestine

• bone

• lungs

• heart

How many types of blood vessels are in our body?

• 1
• 2
• 3
• 4

Veins carry oxygen poor blood back to the heart.

• False

• True