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CS Facts
Chapter 23 (project facts)
| Facts Two | Facts | & more facts |
|---|---|---|
| Normal heart beats at 60 to 100 bpm. ( beats per min) | Size of a person's fist. | Two pumps composed of two chambers. |
| Right atrium and ventricle. | Circulates through the body. | Exchanging oxygen, nutrients and other substances to tissues and organs. |
| Superior Venae Cavae: transports blood to the upper. | Inferior Venae Cavae: transports blood to the lower. | Blood travels to the right artrium to the right ventricle. |
| The (RV) contracts expelling blood into the pulmonary arteries. | PA then carries the blood to the lungs. | where blood is fully oxygenated by air we breathe. |
| Left Artium receives the oxygenated blood fromt he lungs via the pulmonary veins. | Blood is then passed through the LV through the mitral valve. | Contacts expelling blood into the aorta. |
| In the aorta the blood initiates a pulse wave. | Then carries it to parts of the body. | Must be oxygenated like the rest of the organs. |
| Main arteries that supply blood to the heart are called the coronary arteries. | Cardiac Conduction System-electric charge that makes the heart pump | Lifetime battey that keeps are heartbeats in rhythm. |
| CCS is operated by two nodes. | The Sinoatrial Node. | & The Atriventricular Node. |
| SN located in the upper right atruium. (where the impulse begins) | & AN is located in the Septum between the right artrium and the right ventricle. | Cardiac impulse is sent to the Sinotrial to the AN. |
| Transmitted to the muscle fibers that run throughout the atria | AN-impulse is conducted to the ventricles to initiate a ventricular beat. | It does that by stimulation of the bundle branches and Purkinje Fibers.` |
| Cardiovascular Diseases are responisble for 1 death every 37 seconds. | They include: heart failure, heart attacks, high BP, diabetes, obesity, high cholesterol, stroke, arrhythmias & congenital heart disease. | Advancements made in health care, with help of meds, surgery, lifestyle changes may help you live longer. |
| Hypertension is defined as intermittent or persistent elevation in diastolic or systolic bloood pressure. | High BP is a big problem, affecting millions of Americans. | Also known as the "Silent Killer". Cause usually there are no known signs. |
| The Result of High BP is the heart has to work harder to pump blood through the chambers and out into the body. | If there is a continous overload on the coronary system also can contribute to the development of atherosclerosis. | Atheroscleorsis-is the hardening of the arteries. |
| Hypotension is low BP. | This occurs because a large amount of blood remains in the lower extremities. | If one stands up quickly the blood returning to the heart is decreased considerably. |
| The body responds by increasing the heartbeat, compensating for the lack of blood flow. | Hyperlipdemia-is the increase of lipids in the bloodstream that leads to hardening of the arteries. | It increases the incidence of angina, stroke, and heart attack. |
| Fatty substances go through the bloodstream and attach themselves to large arteries and middle sized arteries of the heart and brain. | Transient ischemic attacks are caused by a short duration of reduced oxygenation of the brain. | Plaque causes narrowing of the blood vessels, which leads to a reduction of blood flow. |
| If plaque accumlates to form a blood clot, thrombosis is created. | May obstruct a vessel eventually causing a stoke. | Two type of strokes. Ishemic (clot) & hemorrhagic (bleeding). |
| Hem. Strokes are caused by weakened vessels or aneurysms in the brain that cause a vessel to rupture. | A ruptured vessel blood flows into areas of the brain causing damage. | The additional injury is cause by the lack oxygenated blood flow. |
| Symptoms of TIAs appear rapidly. | Vision or hearing problems, weakness on one or both sides of thebody. Dizziness and slurred speech & sudden severe headache. | Main cause of TIA is hypertension is high blood pressure. |
| The high risk factors are persons with diabetes, high cholesterol, heart problems, and obesity. | Lifestyle habits such as smoking, alcohol consumption, lack of exercise can damage or weaken the vessels. | If areas of the heart become entirely blocked because of thrombois or an embolism. then the heart cannot receive the necessary oxygen. |
| Death is the ultimate result of that heart muscle. | A condition known as mycardial infaction. | You can develop arrhythmias ( irregular heartbeat) with coronary artery disease. |
| Heart beats in a regular rhythm. | This is accomplished via special fibers that run throughout the heart. | The arteries of the heart do not receive proper oxygenation . This is called Coronary Artery Disease. |
| Atherosclerosis is a syndrome that affects arterial blood vessels. | If inflammation occurs as a result of lifelong build up of small plaque. Composed of lipids, and clumping of the platelets | Plaques or platelets tend to accumlate in the arteries throughout the heart. Restricting blood flow. |
| Small injuries can occur in the vessel walls. | Damage can occur to the arterial wall the body respons by sending marcophages & T-lymphocytes to fight the plaques. | Lymphocytes cna increase the blockage. |
| Due to the thickening loss of elasticity & calcification of the arterial walls is called Atherosclerosis. | ||
| Network of complex interactions. | They involve the blood, lungs, arteries, and veins. And the heart itself. | Located between your lungs in the chest cavity. |
Created by:
Lguston
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