Arteries of the heart
[DOC File]Dorchester School District Two / Homepage
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The heart muscle, or myocardium, is composed of a specialized type of muscle tissue called . The arteries that oxygenate and nourish the myocardium are the . The coronary sinus returns blood from the heart tissue to the. Relative to the roles of the heart chambers, the are receiving chambers . Whereas the are discharging chambers.
[DOC File]Arteries and Veins - marshall.k12.mn.us
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Arteries v. Veins. An artery leads _____ from the heart. The have an enlarged _____ _____ They also have _____ tissue to absorb pressure from the heart. These branch into smaller vessels called _____ Eventually, these vessels lead to tissues. They are then 1 . …
[DOC File]Heart and arteries Topic #1
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Title: Heart and arteries Topic #1 Author: user Last modified by: smirnoff Created Date: 3/15/2012 10:16:00 PM Company: Организация Other titles
[DOC File]Circulatory System
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Heart. Arteries. Veins. Capillaries. Blood and lymph are part of circulatory system. Major Blood Circuits. General (Systemic) circulation. Cardiopulmonary circulation The Heart. Muscular organ. Size of a closed fist. Weighs 12-13 oz. Location – thoracic cavity. APEX – conical tip, lies on diaphragm, points left. Stethoscope – instrument ...
[DOC File]THE HEART
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Nerves travel to the heart along the coronary arteries and modify the rate and strength of the heart beat. The conduction system consists of specialized heart muscle fibers that transmit electrical impulses to regulate atrial and ventricular contraction. These modified fibers are separated from the ordinary myocardial fibers by delicate ...
[DOC File]I
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Arteries carry blood away from the heart to other organs. The smallest arteries are called arterioles and as these vessels enter tissues they become capillaries. The thin walls of capillaries allow exchange of substances between blood and tissue. Capillaries reunite to …
[DOC File]The Cardiovascular System: The Heart
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External Heart: Major Vessels of the Heart . Superior & inferior venae cava. Right and left pulmonary veins. Pulmonary trunk (splits into right & left pulmonary arteries) Ascending aorta (3 branches) – brachiocephalic, carotid, & subclavian arteries. Atria of the Heart. Atria are the receiving chambers of the heart. Each atrium has a ...
[DOC File]Circulatory system
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Coronary arteries carry oxygen and food to the heart muscle. A . portal system. is a blood supply that flows from one organ directly to another organ without passing through the heart e.g. hepatic portal vein brings blood (rich in digested food but lacking in oxygen) from the intestine directly to the liver. Portal systems begin and end with ...
The Structure and Function of the Mammalian Heart
The walls of the aorta and pulmonary artery are thicker and more elastic than the walls of the vena cava and pulmonary veins. Suggest a reason for greater thickness and elasticity of the arteries adjoining the heart. Artery walls must be thicker than vein walls because artery walls need to be strong enough to
[DOC File]Biology 12 - The Heart & Circulatory System
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Biology 12 - The Heart & Circulatory System. 1. Arterioles small branches of arteries 2. arterial duct connects pulmonary artery to aorta in fetal system to shuttle blood from pulmonary circuit 3. atria top chambers of heart, collect blood from body or lungs, pump to ventricles 4. atrioventricular node AV node: causes ventricles to contract after receiving signal from SA node 5.
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