They are different in that the systole phase requires the blood to be squeezed and pushed out hill increasing the pressure in the arterial system. Diastole is when the heart is relaxed and becomes filled therefore the pressure is decreased. 6. Distinguish between an artery and a vein. Veins carry degenerated blood back to the heart while arteries carry oxygenated blood away from the heart. An example fifths is the pulmonary veins and pulmonary artery. 7. What is a sphygmomanometer? A sphygmomanometer is an instrument used to measure blood pressure.
It usually consists of a cuff and a tube that connects to a rubber ball that allows it to be inflated. 8. How is hypertension treated? Hypertension is another name for high blood pressure. It is treated primarily by lifestyle modifications. For example, to eat healthier, exercise regularly, and stop smoking. Some drugs are also available to help this like diuretics and beta- blockers. 9. Name at least 3 risk factors for hypertension. Three risk factors for hypertension are obesity, amount of exercise, and genetics. 10. What is atherosclerosis? Atherosclerosis is massive plaque build up in your arteries.
This can be caused by an extremely unhealthy diet and a lack of exercise. 11. What is electrocardiography? Electrocardiography is when electrodes are attached to the skin of the chest and limbs in order to measure the electrical activity of the heart. These are often called ERG’s. 12. Describe how angioplasty works? Angioplasty works through putting some type of Steen in a narrowed artery in order to allow for the passage of blood. This is often performed on patients who have forestation of the aorta. 13. Why are artificial hearts not an option for permanent replacement of a bad heart?
Artificial hearts are not an option for permanent replacement of a bad heart cause it is made of materials which are not found in the body and therefore rely on something other than life to keep it pumping. This opens it up for infection rendering it temporary. 14. Name at least two symptoms of a heart attack. Two symptoms of a heart attack are severe chest pain and very heavy breathing. 15. Distinguish between platelets and plasma. Platelets help to control bleeding while plasma provides nutrients to cells. Platelets must be used within five days of exiting the body while plasma may be frozen and usable for up to a year.