1.6 VESSELS: ARTERIES‚ VEINS & LYMPHATICS CARDIOVASCULAR SYSTEM Structure • heart‚ arteries‚ arterioles‚ capillaries‚ venules‚ veins Functions • transportation (oxygen‚ carbon dioxide‚ nutrients‚ wastes‚ wastes hormones) • regulation (pH‚ body temperature‚ temperature fluid & electrolytes) Principle arteries and veins CARDIOVASCULAR SYSTEM • Heart: pumps blood • Artery: vessel leaving the heart (Arteries take blood AWAY from your heart) • Vein: vessel going to the heart • Capillaries:
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The connectors between the veins and arteries. Very tiny and thin walled like arterioles‚ (their actually buddies) their function is to supply body tissue with the components of blood and to get rid of waste from surrounding cells. They have a specific job‚ unlike most blood vessels‚ which primary job is to transport blood from one station to another continuously. Venules • Venules are minute veins- Meaning real quick. There main job is to drain the capillaries into veins‚ returning the blood to the
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12-7-15 Anatomy Cardiovascular System The Cardiovasuclar system is one of the most important systems in your body and it is also one of the largest systems in your body. This system consists of the heart‚ and a system of vessels called arteries‚ veins and capillaries. They are responsible for transporting‚ nutrients hormones‚ oxygen and waste throughout the body. All of these play an important part in this system and the system would fall apart if one wasn’t there. This system is is powered by
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through the Superior Vena Cava which is the large vein at the top of the heart‚ and the Inferior Vena Cava‚ which is the large vein at the bottom of the heart. Blood flows into the right atrium‚ passes through the tricuspid valve‚ and makes its way into the right ventricle. It then moves through the pulmonic valve‚ into the pulmonary artery to the lungs.” After picking up oxygen in the lungs‚ the blood moves out of the lungs into the pulmonary vein‚ into the left atrium‚ through the mitral valve‚
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cells and sheets of elastin Outer Tunica externa Collagen fibers that protect and reinforce the blood vessels and anchor it to surrounding structures 2. In the following list of characteristics‚ put “A” for artery‚ “C” for capillary‚ and “V” for vein: v contain the lowest pressure a contain the highest pressure a has thick tunica media v thin tunica media c smallest of the blood vessels a carries blood away from heart v largest lumen—blood reservoir c has only one tunic (intima) v carries
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Low Molecular Weight Heparin Paper Low molecular weight heparin is typically used for patients who need to be treated for deep vein thrombosis. Deep vein thrombosis (DVT) is a blood clot (thrombus) in a deep vein usually in the legs. These clots are dangerous because they can break loose‚ travel through the bloodstream to the lungs‚ and block blood flow in the lungs (pulmonary embolism). There are many reasons why clots form in a patient. Mainly
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system. Oxygenated blood is pumped away from the heart to the rest of the body‚ while deoxygenated blood is pumped to the lungs where it is re-oxygenated before returning to the heart. The total blood volume is unevenly distrubted among the arteries‚ veins‚ and capillaries. The heart arteries and capillaries in the pulmonary and systemic circuits normally contain30 percent of blood volume like 1.5 liters of whole blood. And the venous system contains the rest 65-70 percent and that’s about 3.5 liters
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A&P 203- Study Guide (Review) for Practical #2 Blood Vessels 1. Identify Arteries and Veins on checklist on: Torso model Blood vessel Flat board 1/2-size Muscle Figure Arm and Leg models Life size Wall Chart. 2. Slides - Identify artery‚ vein‚ capillary and aorta. - Identify the three tunics (wall layers) in all vessels and the tissue that composes each tunic. Tunica interna (intima)- endothelium (simple squamous epithelium) Tunica media- smooth muscle Tunica externa
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Athens. Both scientists base their models of respiration and blood distribution in the body from technological-ladenness of observation. Erasistratus proposes that heart uses force propulsion to distribute air and blood throughout the arteries and veins. His concept focuses on “the filling towards what is being” emptied‚ making the body a quasi-pneumatic machine. Erasistratus believes that blood and air distribution underwent a unidirectional flow (rather than a circulatory one). His model has its
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R E V I E W S H E E T 32 Print Form Anatomy of Blood Vessels Microscopic Structure of the Blood Vessels 1. Cross-sectional views of an artery and of a vein are shown here. Identify each; and on the lines to the sides‚ note the structural details that enabled you to make these identifications: artery (vessel type) vein (vessel type) open‚ circular lumen (a) (a) somewhat collapsed lu thinner media (b) thick media (b) Now describe each tunic more fully by selecting its
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