cells and tissues. Waste substances flow from the tissues and cells into the blood for disposal. The capillaries join and enlarge to create tubes that eventually become veins‚ which take blood back to the heart. Vessels carrying oxygenated blood (usually arteries) are shown in red and those carrying deoxygenated blood (usually veins) are blue. The cardiac muscle of the heart wall depends on a constant flow of blood supply by the coronary arteries. Coronary arteries are blood vessels that arise from
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outcomes Power point Handouts Demonstrating Listening Taking notes Questioning Questioning 09.45- 09.54 9mins OBJ:to demonstrate the sites of venipuncture LOC: learners will be able to identify the safe sites of the veins to
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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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Include in your explanation the major concepts you learned and any safety concerns associated with the lab. Learning the structural and functional differences among arteries‚ veins‚ and capillaries. Identify the major arteries arising from the aorta through observation and dissection of a preserved specimen. Identify the major veins draining into the superior and inferior vena cava through observation and dissection of a preserved specimen wear approved safety glasses at all times while working on lab
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lymphatic system‚ the muscular –skeletal system and lastly the endocrine system. Each of these systems has their own functions and purpose Cardiovascular System- The cardiovascular system is made up of the heart‚ blood vessels‚ arteries‚ capillaries and veins. The cardiovascular system makes up a network which helps to deliver blood to all the tissues in our body. Each heartbeat pumps blood around our body‚ carrying necessary nutrients needed for our body to be absorbed and oxygen to the cells within our
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more dimensions and features and is not as flat as were taught at a young age. The heart a muscular organ about the size of a fist‚ located just behind and slightly left of the breastbone. The heart pumps blood through the network of arteries and veins called the cardiovascular system. The heart has four chambers; the left and right atrium‚ left and right ventricle and the coronary Arteries that run along the surface of the heart and provide oxygen-rich blood to the heart muscle (The Heart 2014)
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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 first was said to be the continued use of leeches. The second was called arteriotomy‚ which is a process where the arteries in the temples would be ruptured and bled. The third was phlebotomy‚ commonly known back then as “breathing a vein”‚ where a large vein would be cut‚ to draw blood. The last was scarification which is said to be a particularly stomach-tossing method that involved one of a varied set of tools such as spring-loaded lancets and a round‚ mutli-bladed‚ and spring-loaded device
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through a wire‚ called a lead. Sometimes just one lead is needed. Other times‚ there will be two leads. There are two types of pacemakers: • Transvenous pacemaker. This type is placed under the skin or muscle of your chest. The lead goes through a vein in the chest area to reach the inside of the heart. • Epicardial pacemaker. This type is placed under the skin or muscle of your chest or belly. The lead goes through your chest to the outside of the
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