Introduction to the Circulatory System

Blood is made of different kinds of _________________.

• plasma
• blood cells that float in plasma
• platelets 
• nutrients floating in platelets

The blood inside the ___________  moves into the aorta (the main artery) or the pulmonary artery
from the aorta, the blood is sent around the body from here.

• ventricles
• atrium
• upper chambers
• lungs

This organ is located between the lungs behind your rib cage in a slanting position in the center of the chest

• stomach
• small intestine
• a voluntary muscle
• heart

Blood also carries waste products like __________.

• oxygen
• feces
• nutrients
• carbon dioxide

The right side of the heart pumps blood to the __________.

• left side of the heart
• lungs
• rest of the body
• brain

The left side of the heart pumps blood away to the __________.

• left side of the heart
• lungs
• rest of the body
• brain

Plasma is ______________.

• a yellowish liquid
• a red cell 
• carried by blood cells
• nutrients

The heart has _____ separate pumps.

• 6
• 5
• 2 
• 4

In the heart __________ control the flow of blood through the heart.

• valves
• lobes
• sphincters 
• arteries

Plasma is _____________.

• small blood cells
• mostly water
• large blood cells
• thick liquid made of platelets