THE CIRCULATORY SYSTEM Transportation Blood carries food water

THE CIRCULATORY SYSTEM

Transportation Blood carries food, water, oxygen and other materials through you circulatory system to your body’s cells and tissues Elimination Blood also carries away waste materials Ex. Blood picks up carbon dioxide produced during cellular respiration FUNCTIONS

Heart Pushes blood through the circulatory system Four chambers Blood enters the upper two chambers of the heart, called the ATRIA Blood leaves through the lower two chambers of the heart, called the VENTRICLES CIRCULATORY SYSTEM ORGANS

PATH OF BLOOD THROUGH THE HEART

Arteries A vessel that takes blood away from the heart Veins A vessel that brings blood toward the heart Capillaries Tiny blood vessels that deliver supplies to individual cells and take away waste materials BLOOD VESSELS

Systemic The network of vessels that carry blood from the heart to the body and from the body back to the heart Coronary Circulation Supplies blood to all the cells of the heart Pulmonary Circulation The network of vessels that carries blood to and from the lungs TYPES OF CIRCULATION

Transportation Ex. Blood carries oxygen to and carbon dioxide from the lungs, picks up nutrients from the small intestine and carries them to all body cells, transports hormones produced by the endocrine system Protection Some blood cells fight infection, contains materials that help repair torn blood vessels and heal wounds Temperature Regulation Helps your body maintain a steady temperature of 37°C FUNCTIONS OF BLOOD

Red Blood Cells White Blood Cells Several kinds, protect your body from illness and infection Platelets Flattened disk shape, contains hemoglobin (iron-rich protein molecules) that oxygen binds to Small, irregularly shaped pieces of cells that plug wounds and stop bleeding Plasma Yellowish, liquid part of blood that transports blood cells PARTS OF BLOOD

BLOOD TYPES

What How are the two functions of the circulatory system? many chambers does a heart have? What are three types of blood vessels? Which vessel takes blood away from the heart and which vessel takes pushes blood toward the heart? What are the four components of blood? CIRCULATORY EXIT TICKET