Sharon Jackson
1. The septum separates the heart into a right and left side. If there was a hole in the septum there would be a mix of oxygen right blood and oxygen poor blood and some oxygen right blood can enter the lungs instead of the body.
2. Capillaries exchange materials with the cells of the body there veins return blood to the heart and arteries take blood away from the heart
3. The SA node, or sinoatrial node initiates the heartbeat and automatically sends out a signal every 0.85 seconds, which causes the atria to contract. The AV node, or the atrioventraicular node, receives this signal. There is a slight delay that allows the atria to finish their contraction before the ventricles begin their contraction.
4. The …show more content…
5. Pules and blood pressure are related because they are both signs of the blood pumping through the arteries. They are different because the pulse is the measure of the heart beat and the blood pressure is a measure of the pressure of the blood against the walls of a blood vessel.
6. The pulmonary circuit circulates blood through the lungs. The systemic circuit to the body tissues, and the coronary circulation circulates blood through the heart.
7. 5 cardiovascular disorders are:
Hypertension is when the blood moves through the arteries at a higher pressure than normal. Hypertension can cause heart attack, stroke or even kidney failure
Atherosclerosis is the buildup of plaque in arteries causing narrowing of the blood vessels choking the oxygen supply to the tissues.
Stroke is when a small cranial arteriole is blocked by and embolus and causes lack of oxygen to the brain causing that part of the brain to die
Heart Attack is caused by a blocked coronary artery causing a portion of the heart muscle to die due to lack of oxygen
Aneurysm is the ballooning of a blood vessel which can rupture and cause death.
8. Plasma is 91% water and 9% various salts and organic molecules. Plasma proteins maintain