Warm up: Which do you think are bigger? Arteries or veins and why?

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Presentation transcript:

Warm up: Which do you think are bigger? Arteries or veins and why?

Arteries carry blood away from the heart. blood under great pressure Arteries, veins, and capillaries transport blood to all parts of the body. Arteries carry blood away from the heart. blood under great pressure thicker, more muscular walls ARTERY VEIN CAPILLARIES arteriole venule endothelium connective tissue smooth muscle valve

Veins carry blood back to the heart. blood under less pressure thinner walls, larger diameter valves prevent backflow ARTERY VEIN CAPILLARIES arteriole venule endothelium connective tissue smooth muscle valve

Capillaries move blood between veins, arteries, and cells Capillaries move blood between veins, arteries, and cells. Draw the picture below: ARTERY VEIN CAPILLARIES arteriole endothelium connective tissue smooth muscle venule valve

Blood pressure is a measure of the force of blood pushing against artery walls. systolic pressure: left ventricle contracts diastolic pressure: left ventricle relaxes High blood pressure can precede a heart attack or stroke.

Lifestyle plays a key role in circulatory diseases. Some choices lead to an increased risk of circulatory diseases. smoking long-term stress excessive weight lack of exercise diet low in fruits and vegetables, high in saturated fats

Circulatory diseases affect mainly the heart and the arteries. artery walls become thick and inflexible plaque blocks blood flow in arteries

How they can be prevented Any treatments for them. Next: Do some research with your phones and find at least 3 diseases of the circulatory system. Find out: What they are How you get them How they can be prevented Any treatments for them. Write a one page essay describing each of the diseases in detail.