front 1 when blood leaves the heart, it first enters where? | back 1 into the arteries |
front 2 the artrioventricular valves are closed when.... | back 2 when pressure is too high then, the ventricles contract. |
front 3 fluid that escapes from circulatory system due to high pressure is referred to as? | back 3 interstitial fluid |
front 4 arterioles and arteries which one has more smooth muscle? | back 4 arteries |
front 5 following a heart attack, the damaged heart muscle is difficult to repair because? | back 5 the body cannot replace cardiac muscle tissue making the damage permanent. |
front 6 the fibrous sac that surrounds the heart and produces lubricant for heart contraction is the? | back 6 serous pericardium |
front 7 surgical removal of the sinoatrial node would most likely result in? | back 7 needing a pacemaker |
front 8 indirect exchange of nutrients and gases between blood and tissues is the primary function of? | back 8 capillaries |
front 9 the left ventricle has a more muscular wall than the other three chambers of the heart because the left ventricle must? | back 9 because it must generate enough force and blood pressure to pump blood into the aorta |
front 10 the aortic semilunar valve opens when? | back 10 when there is pressure in the aorta and pulmonary trunk |
front 11 after blood flows through the right atrium of the heart, its next major destination is the? | back 11 through the tricuspid valve |
front 12 what blood vessels transport oxygenated blood from the lungs to the heart | back 12 the superior, the inferior vena cava, the pulmonary artery, the pulmonary vein, and the aorta |
front 13 know what makes up the systemic circuit | back 13 its the part of the circulatory system in which the blood leaves the heart, services the body's cells and then reenters the heart. |
front 14 dexoygenated blood always flows towards... | back 14 the arteries. ( away from the heart) |
front 15 blood pressure in veins is lower than arteries and a series of __________are neccessary to prevent backflow of blood | back 15 valves |
front 16 blood pumped from the right ventricle is_____and enters the _______ | back 16 deoxygenated lungs |
front 17 electrical impulses that stimulate contraction of heart muscles are initiated in the? | back 17 the brain |
front 18 artherosclerosis is a condition that results in a thickening of arterial walls due to build up of fatty deposits containing? | back 18 plaque |
front 19 the sinoatrial node regulates? | back 19 the rate and rhythm of the heart know as the pacemaker of the heart |
front 20 an electrocardiogram is used to? | back 20 check for problems with the electrical activity of the heart. |
front 21 blood pressure is highest in the? | back 21 systolic pressure |
front 22 what risk factors for atherosclerosis include factors that can raise the levels of blood cholesterol | back 22 eating fatty foods, not exercising, high blood pressure high cholesterol. (plaque builds up in the arteries which consist of fats, cholesterol, calcium, and other stuff found in the blood. ) |
front 23 what condition is typically treated by cardioversion? | back 23 irregular heart rhythms |
front 24 cardiac output can be calculated by? | back 24 multiply heart rate by stroke volume |
front 25 what do baroreceptors regulate? | back 25 blood pressure. |
front 26 when the force of blood on the walls of blood vessels drop below normal, the condition is referred to as? | back 26 hypotension |
front 27 where in the body is the regulation of cardiac output centered? | back 27 the area of the brain called the medulla oblongata |
front 28 what part of the brain regulates heart activity? | back 28 medulla oblongata |
front 29 what is an angiogram? | back 29 an xray photograph of blood or lymph vessels. |
front 30 symptoms of a heart attack... | back 30 chest pain, a sense of tightness or pressure on the chest making it hard to breath, pain in left arm, also nausea, and jaw and back pain. |
front 31 what happens when someone has congestive heart failure? | back 31 the high capillary blood pressure causes more fluid than usual to filter out of the capillaries and into the interstitual space causing the build up of interstitual fluid. |
front 32 what are several factors known to increase the risk of a heart attack? | back 32 smoking, a lack of exercise, obesity and chronic stress |