Respiratory and CirculatorySystems

Respiratory System

• Takes in oxygen from the air that you breathe.

• Lungs are the main structures in this system.

Respiratory System

• Air enters your body through nose or mouth, moves down your throat & passes through the trachea or windpipe, then to your lungs.

Respiratory System

• Oxygen is taken into your blood and carbon dioxide leaves your blood.

• Your diaphragm lies below the lungs. The diaphragm & muscles around it tighten and relax to make you breathe in and out.

Respiratory System

Circulatory System• Carries oxygen, food, &

waste throughout the body

• Made up of the heart, blood vessels, and blood

Circulatory System

• Heart is the center of this system, it pumps blood through blood vessels called arteries.

• Heart is also called the cardiovascular muscle.

Circulatory System

• Blood moves from arteries into capillaries.

• In the capillaries oxygen & food move from the blood to the body’s cells

• Blood then moves through veins back to the heart.

Circulatory System

• The circulatory system also works with the respiratory and digestive systems.

Circulatory System• Respiratory system gives oxygen & the circulatory

system takes that oxygen to other cells.

• Digestive system breaks down food & the circulatory system carries the nutrients to cells in the body.