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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Cardiovascular System: Intrinsic Conduction System 1. The intrinsic conduction system consists of __autorhythmic____ __cardiac__ cells that initiate and distribute __impulses_____ throughout the heart. 2. The intrinsic conduction system coordinates heart activity by determining the direction and speed of ____heart depolarization____. This leads to a coordinated heart contraction. 3. List the functions for the following parts of the intrinsic conduction system: a. SA node _sets the pace for the
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metabolism the first thing you might think of is the number of calories your cells burn each day. Metabolism is actually the sum of all chemical reactions that take place in the body. Metabolic reactions that produce energy are dependent on the cardiovascular system‚ which send oxygen to all the cells in your body. Although metabolism is not primarily made of reactions that burn nutrients like carbohydrates‚ fats and protein‚ these are perhaps the most widely known of the metabolic reactions. (CITE) However
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above4mg/2mg*5ml=10ml | 1 tablet 2times daily for 4weeks. OrallyStrength= 2mg \tablet0.3mg\kg=0.3mg*16kg=4.8mg\day4.8mg\2=2.4mg two times aday. | Action of the Drug | Why theparticular drug is prescribed for the child?(include clinical manifestations‚Lab values‚results of diagnostic tests).Common action | Paracetamol reduces the synthesis of prostaglandins which are responsible for the mediation of pain and fever. | Competes with histamine for H1 receptor sites and reduces allergic response by blocking
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The cardiovascular system‚ also known as the circulatory system‚ is composed of the heart‚ blood vessels‚ and blood. The term cardiovascular refers to the heart (cardio-) and blood vessels (vascular). The term circulatory refers to the circulation of the blood. The heart is a muscular pump and its regular contractions send blood into tough‚ elastic tubes called arteries‚ which branch into smaller vessels and convey oxygen-rich blood through the body. The arteries eventually divide into tiny capillaries
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Chapter 19 The Cardiovascular System: The Heart 1. How is the heart positioned in the mediastinum? It rests on the diaphragm‚ near the midline of the thoracic cavity‚ with about two-thirds of the mass lying to the left of the body’s midline. 2. Which layer of the pericardium is both a part of the pericardium and a part of the heart wall? Serous pericardium 3. What is the function of pericardial fluid? Reduces friction between the membranes as the heart moves 4. From most superficial
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The cardiovascular system is the movement of blood being permitted around the body to vital organs and muscles with the components of the heart‚ blood‚ and blood vessels combining together to make the cardiovascular system work. The cardiovascular systems is vital in the human body as it promotes the body’s delivery system for blood being pumped around the entire body for survival. The respiratory system also has importance in the body as it is the system to transport air into the lungs to aid the
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Human Body May 30‚ 2010 The Cardiovascular and Muscular Systems Organ system is a group of organs that work together to perform a certain task. Humans have a variety of systems due to the complexity of the species’ organism. The human body consists of biological systems‚ that consist of organs‚ that consist of tissues‚ that consist of cells and connective tissue. Although an organ has a specific function‚ organs also function as part of a group. The organ system is the organizational unit
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For other uses‚ see Capillary (disambiguation). [pic] [pic] Blood flows from the heart to arteries‚ which branch and narrow into arterioles‚ and then narrow further still into capillaries. After the tissue has been perfused‚ capillaries branch and widen to become venules and then widen more and connect to become veins‚ which return blood to the heart. Capillaries (pronounced /ˈkæpəˌlɛri/) are the smallest of a body ’s blood vessels and are part of the microcirculation. They are only 1 cell thick
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volume of blood in your body compare to the volume of fluid in a two liter bottle? In the average sized male adult the blood volume is 5 to 6 liters and it is 4-5 liters in the average sized female adult. 2. What is the significance of a lower than normal hematocrit? A higher than normal hematocrit? What might be the effect of a bacterial infection on the hematocrit? Having a low hematocrit causes anemia‚ feeling of fatigue‚ dizziness etc. It is treated with iron supplements or a blood transfusion
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