Structure of the heart: The heart is at the centre of the cardiovascular system. It is a hollow muscular pump that drives blood through the arteries‚ which allows it to reach the working muscles and tissues. The heart is split into two halves. The right side of the heart is separated from the left by a solid wall known as the septum. This prevents any blood on the right side coming into contact with the blood on the left side. The right side of the heart sends deoxygenated blood to the lungs in
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adventure through the femoral vein up through the body‚ through all the detours and then our final destination will be out the nose. We will also discuss what we pass through the whole trip. Ready or not were heading off to exam the inside of the human body. As we enter the body through the femoral vein‚ you will notice that there is another object that looks like the femoral vein but it is called the femoral artery. The femoral artery runs parallel with the femoral vein through the upper thigh and
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The Cardiovascular System: The Heart- Chapter 18 Heart Anatomy Size‚ Location‚ and Orientation * Approximately the size of a fist * Location * In the mediastinum between second rib and fifth intercostal space * On the superior surface of diaphragm * Two-thirds to the left of the midsternal line; balance projects to the right * Anterior to the vertebral column‚ posterior to the sternum Coverings of the Heart * Enclosed in pericardium‚ a double-walled sac
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SENSE- is the ability to perceive stimuli. SENSATION (PERCEPTION)- is the conscious awareness of stimuli received by sensory receptors. GENERAL SENSES- are those with receptors distributed over a large part of the body. SOMATIC SENSES- provides sensory information about the body and the environment. VISCERAL SENSES- are more specialized in structure and are localized to specific parts of the body such as pain and pressure. SPECIAL SENSES- are more specialized in structure such as smell
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Pericardium – deep to the fibrous pericardium‚ a thin‚ slippery‚ two-layer serous membrane that forms a closed sac around the heart. • Parietal Layer – lines the internal surface off the fibrous pericardium and attaches to the large arteries exiting the heart. • Epicardium – Visceral layer of the Serous Pericardium that lines the external heart surface 3. Describe the structure and function of each of the three layers of the heart wall. • Endocardium
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Coronary Circulation Superior Vena Cava Coronary Sinus Inferior Vena Cava Right Atrium Lower Body Circulation (below the diaphragm) Left Atrium • Receives what kind of blood? • From which circuit? • Receives 4 vessels – Pulmonary veins • Sends blood thru the mitral orifice (past the mitral valve) to the… Interatrial Septum • Function? • Adult vs. Fetus • Fossa ovalis. • Foramen ovale. Why do the fetal atria connect? • What gets skipped? • Where does fetal
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common function e. Organ – a structure that is composed of two or more tissue types and performs a specific function for the body f. Organ System – a group of organs that cooperate to accomplish a common purpose 2. True or false: arteries always contain oxygen-rich blood. g. true 3. Is blood a tissue? h. Blood is considered
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Blood Case Studies BIO 169 1. A) The primary disorder of this person is Hemolytic Anemia. That is when the bone marrow is unable to produce more red blood cells to make up for the ones being lost. There are more being destroyed faster and the bone marrow can not keep up. http://www.nhlbi.nih.gov/health/dci/Diseases/ha/ha_whatis.html B) The cause of the leukocytosis is that there is an increase in the production of white blood cells and in this case it is the level of lymphocytes that are
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In the lungs the pleural membrane facilitates breathing. The bronchioles end in microscopic alveoli lined by a thin‚ moist epithelium. The alveoli is the primary site of gas exchange. Branches of the pulmonary arteries send oxygen poor blood to the alveoli; branches of the pulmonary veins transport oxygen rich blood from the alveoli back to the heart. Inspiration (the process of inhaling) begins as the external intercostals and diaphragm contract. When this happens‚ the lungs expand. After this
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itself)→Right Ventricle→pulmonary semilunar valves→lungs→pulmonary veins→left atrium→bicuspid valve→left ventricle→aortic semilunar valve→systemic circuit. What the valves do: • Prevent backflow into the atria and ventricles‚ ensuring that blood only flows one way through the heart. what vessels bring blood to the heart and take blood away‚ etc... Veins from the systemic circuit bring deoxygenated blood back to the heart‚ while veins from the pulmonary circuit bring oxygenated blood from the lungs
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