The heart is a hollow muscular organ that pumps blood throughout the blood vessels to various parts of the body by repeated‚ rhythmic contractions. It is found in all animals with a circulatory system‚ which includes the vertebrates. The adjective cardiac means "related to the heart" and comes from the Greek καρδιά‚ kardia‚ for "heart". Cardiology is the medical speciality that deals with cardiac diseases and abnormalities. The vertebrate heart is principally composed of cardiac muscle and connective
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The heart is made up of four chambers‚ the left and right atria‚ and the left and right ventricles. “The left and right sides of the heart do not communicate with one another after birth and are separated by a thick interventrical or interatrial septum” (Prater‚ 2008). The top (atrium) and bottom (ventricle) parts of the heart are separated by a valve‚ which prevents the backflow of blood. Blood enters the heart through the inferior and superior vena cava carrying deoxygenated blood. The vena cava
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The heart is an organ that acts as a ‘’pump’’ because it pumps blood continuously that is rich in a high concentration of oxygen throughout the organs of the human body such as the brain. Blood is carried through tube like structures called blood vessels such as the artery and the vein. The arteries carry blood from the heart at high pressure which contains a high concentration of oxygen and nutrients to supply the organs. Veins carry blood at low pressure to the heart which contains a high concentration
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The Heart and Circulation of Blood In this research paper‚ I will be analyzing the process of blood circulation within the human body. I will be focusing on the pulmonary circuit and the systemic circuit‚ as well as the relationship with the hepatic portal system. The combination of these systems allows the body to function properly and maintain unconscious homeostasis. I will also be talking about the effects that fitness and diet have on these processes. The pulmonary circuit passes already-used
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Cardiovascular System: The Heart Purpose Explain why you did this exercise. Where there any safety precautions you needed to follow? If so‚ what were they? The safety precautions in this exercise were to wear goggles and gloves due to being exposed to chemicals and dissection of the sheep and cat heart. Appropriate work space was also required. Exercise 1: Microscopic
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Jacob Powell Write-up for Heart and Blood Vessels Date: 10/18/2013 Time: 1330 Biographical: G.B.‚ 20‚ Male‚ Caucasian‚ DOB: 01/23/1993‚ Student‚ Dr. Wang‚ Orientated to person‚ time and place‚ reliable source of information. No deficits in mental ability. Write-up for Heart: History of Present Illness- Chief Complaint- Fatigue Denies chest pain Fatigue is persistent‚ but not strong enough to interfere with capabilities Denies associated symptoms Denies medication Denies cough Denies difficulty breathing
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The Heart The heart is a group muscles that pumps blood throughout the blood vessels by repeated‚ rhythmic contractions. It is found in all animals with a circulatory system. The vertebrate heart is principally composed of cardiac muscle and connective tissue. Cardiac muscle is an involuntary striated muscle tissue found only in this organ and responsible for the ability of the heart to pump blood. The structure of the heart can vary among the different branches of the animal kingdom. Cephalopods
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Heart Valve Transplants The heart‚ the most important organ in the body‚ plays a vital role in a supplying the body with all of the nutrients needed. Not only does the heart pump blood through the body‚ but it also carries oxygen to help the body function correctly and it allows for the removal of waste product. Because the heart is so essential to human body‚ its structure and function is equally as important. The heart is designed to pump blood through its chambers. The top two chambers
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Blood Flow Through The Human Body Amber N Culpepper Med 251 Clinical Skills Professor Cornett April 30‚ 2014 This paper is submitted in partial fullfillment of the Associate of Science degree in the Medical Assisting program at Southern Technical College The heart is made up of four chambers the Right Atrium‚ Left Atrium‚ Right Ventricle & Left Ventricle. Blood flows a particular path through
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following statements is true? A. Blood is an organ B. Blood is a connective tissue X C. Blood is composed of living cells only D. None of the above 2. Which of the following would be considered a normal hematocrit? A. 45% X B. 35% C. 85% D. 10% 3. Which of the following cells does not contain a nucleus? A. Monocytes B. Lymphocytes C. Erthyrocytes X D. All of the above 4. Which of the following is a function of blood? A. Distribution of gases‚ wastes
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