Presentation is loading. Please wait.

Presentation is loading. Please wait.

Circulatory System.

Similar presentations

Presentation on theme: "Circulatory System."— Presentation transcript:

1 Circulatory System

2 Functions Transport oxygen and carbon dioxide Distribute nutrients
Transport wastes Distribute hormones Regulate body temperature

3 The Heart Cardiac cycle Systole – ventricle contraction
Diastole – relaxation of all chambers following contraction of atria

4 Blood’s Path Through the Heart - Deoxygenated
Vena cava Right atrium Right ventricle Pulmonary Arteries Lungs

5 Blood’s Path Through the Heart - Oxygenated
Lungs Pulmonary Veins Left atrium Left ventricle Aorta Body

6 Influence on Heart Rate
Nervous system Hormones

7 Functions of Blood Transport Immune Response Nutrients Gasses Hormones
Waste Products Immune Response

8 Blood Composition Plasma 55-60% Red blood cells – carry oxygen
White blood cells - immunity Platelets – clotting ***Blood is mostly saltwater!***

9 Blood Vessels Arteries/arterioles – have smooth muscle in walls, take blood away from the heart Capillaries – very small, place where most gas exchange occurs Veins/venules – have valves, no muscle, take blood toward the heart

Download ppt "Circulatory System."

Similar presentations

Ads by Google