heart (which atria? deox- or oxygenated?). 13. Name (and locate) the arteries that take blood away from the heart (from which ventricle? deox-or oxygenated blood?). 14. Distinguish between pulmonary‚ coronary and systemic circulation. 15. Track a drop of blood through the following circulations: a. heart/ lungs/ heart; b. through myocardium; c. to the body (in general). 16. Define the terms ischemia and hypoxia‚ and explain how they are related to the pathologic conditions of angina pectoris
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chamber is ready. The first heart sound is known as the ______________ and the ( lub OR dub ) The second heart sound is known as the _______________ and the ( lub OR dub ) What arteries are responsible for supplying blood to the heart? Coronary veins return blood to the right atrium through what? The conduction system is also know as the __________________ circuit. List the 4 main components of the Conduction system‚ in order: Which of thse is known for being the pacemaker of the
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blood through the four chambers. One can not accurately describe the cardiac cycle by simply tracing the path of blood from the right atrium‚ into the right ventricle‚ into the pulmonary circulation‚ the venous pulmonary return to the left atrium‚ and finally the ejection into the aorta and systemic circulation by the contraction of the left ventricle. In reality‚ the cardiac cycle is a coordinated series of events that take place simultaneously on both the right pulmonary circuit and left systemic
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Atherosclerosis is a disease affecting the arterial blood vessel and it is commonly referred to as a "hardening" or "furring" of the arteries. It is caused by the formation of multiple plaques within the arteries. Theses plaques begin to form when a vessel receives tiny injuries‚ usually at a point of branching. In turn these plaques gradually thicken and harden with fibrous material‚ cells‚ and other deposits‚ restricting the lumen (opening) of the vessel and reducing blood flow to the tissues‚
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tissues wouldn’t get oxygen and therefore not function and the person would not survive. The function of the left side of the heart is to take oxygenated blood from the lungs and pump it out to and through the rest of the body. This is the systemic circulation of the heart. With every body system there are homeostatic imbalances and one for the cardiac system is heart failure. Heart failure on the left side can happen in two ways‚ systolic heart failure and diastolic heart failure. A systolic heart failure
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breathing and digestion. Multiple sclerosis Alzheimer’s disease Parkinson’s Epilepsy Stroke Required: Cardiovascular System Heart Arteries Veins Coronary circulation Pulmonary circulation The heart and the circulatory system make up your cardiovascular system. Your heart works as a pump that pushes blood to the organs‚ tissue‚ and cells of your body. Coronary artery Heart attack Abnormal heart rhythms Heart failure Congenital heart disease Required: Endocrine System Pituitary gland Thyroid gland Parathyroid
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people in the United States suffer from coronary artery disease‚ an estimate of 770‚ 000 and 1 million people have a heart attack each year. Regardless of the decrease in the mortality rate in the past decade‚ CAD continues to be cause one third of all deaths in the United States. Like many other complications dealing with the human body‚ cardiovascular disease is happening as we speak and heat attack can strike at any moment. In atheroclosis the coronary arteries are occluded with time because
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The mechanism of heart contraction and relaxation (mechanical restitution) is the basic of cardiac functioning. This mechanical restitution is driven by calcium movement and concentrations. An increase in cystolic calcium concentration causes contraction in myocardium. Calcium from the extracellular fluid enters the cardiomyocyte through the L-type Ca2+ channels after being propagated by the cardiac action potential which depolarises the cell. This flood of calcium triggers more calcium release
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Extra Credit Assignment A: Terms 1 – 20 1.) Peripheral artery disease (PAD) is similar to coronary artery disease (CAD). PAD is a problem in the circulatory system where your arteries become narrow which leads to less blood flow to your limbs. PAD develops in your extremities‚ more commonly your legs‚ which can make walking become painful‚ also known as claudication. 2.) Aortic valve stenosis (AVS) is when the aortic valve‚ which is between the aorta and left ventricle of the heart‚ becomes narrow
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A heart attack‚ also known as a myocardial infarction‚ usually occurs when a blood clot forms inside a coronary artery at the site of an atherosclerotic plaque. The blood clot severely limits or completely cuts off blood flow to part of the heart. In a small percentage of cases‚ blood flow is cut off when the muscles in the artery wall contract suddenly‚ constricting the artery. This constriction‚ called vasospasm‚ can occur in an artery that is only slightly narrowed by atherosclerosis or even in
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