A blood vessel is a tube with a space in the centre, called the lumen. In addition, there are steps you can take to prevent or manage some of the problems. Stroke hbp can cause blood vessels in the brain to burst or clog more easily. Veins carry blood back to the heart and arteries carry blood from the heart out to the rest of the body. Cardiovascular disease, or cvd, is a very serious health condition that keeps the heart or blood vessels from working properly. The heart is a large, muscular organ that pumps blood filled with oxygen and nutrients through the blood vessels to the body tissues. Consequences of high blood pressure high blood pressure is often the first domino in a chain or domino effect leading to devastating consequences, like. Structure and function of blood vessels anatomy and. Blood vessels that carry blood to the brain from the. It is here that nutrients, electrolytes, dissolved gases. Full text full text is available as a scanned copy of the original print version. Blood flow and blood pressure regulation explain the structure of arteries, veins, and capillaries, and how blood flows through the body blood primarily moves through the body by the rhythmic movement of smooth muscle in the vessel wall and by the action of the skeletal muscle as the body moves. Cardiovascular system summary notes the cardiovascular. Anatomy and physiology of the cardiovascular system.
Using blood as the transport vehicle, the system carries nutrients, gases, wastes, antibodies, electrolytes, and many other sub stances to and from body cells. During exercise or stress, the heart may pump ten times as much blood as it does at rest. Blood vessel introduction blood vessels may be one of the most important tissues examined due to their ubiquitous and extensive presence in every organ. Arteries carry blood away from the heart to other organs. Use key choices to identify the blood vessel tunic described. Choose from 500 different sets of anatomy and physiology heart blood vessels flashcards on quizlet. Blood from body right ventricle blood from body blood to lungs left atrium blood from lungs left ventricle. Use the printable html button to get a clean page, in either html or pdf, that you can use your browsers print button to print. The amazing heart and blood vessels the adult human heart is about the size of two clenched fists. Heart valve identification, blood vessels comparison, matching the parts functions. Study 52 terms the heart and blood vessels flashcards. The major function of the striations is to generate force and contract in order for the heart to do its job and pump blood throughout the body. Oxygen is vital to life as it provides fuel for all the bodys functions. I have fainted after getting up or changing my position.
In an average lifetime, the heart pumps 1 million barrels of blood enough blood to fill 3. So blood leaves the heart through arteries, which in turn give way to arterioles and then capilliaries where the oxygen is delivered and exchanged for carbon dioxide. Arterial branches of the aorta supply oxygenated blood to all. Heart diseases nutritional aspects the 10% solution for a healthy life blogged version of 1993 book, with reader comments and additional materials. Specific arteries supply blood to specific areas of the brain. Over time, high blood sugar can damage blood vessels and the nerves that control your heart. People with diabetes are also more likely to have other conditions that raise the risk for heart disease. Bio 202 lab report 2, rev 19 page 3 lab 2, cardiovascular system. Arteries are blood vessels that carry blood from the heart. Attached to the heart is blood vessels that transport blood in various circulation pathwayspulmonary blood vessels transport blood between the heart and the lungs, and systemic blood vessels transport blood between the. Heart and circulatory system i columbia university. Chambers of the heart, 560 valves of the heart, 561 blood supply of heart tissue, 563 conduction system of the heart, 565 nerve supply of the heart, 565 blood vessels, 566 types of blood vessels, 566 structure of blood vessels, 566 outer layer, 566 middle layer, 567 inner layer, 567 functions of blood vessels, 567 functions of capillaries, 567. Eventually, the smallest arteries, vessels called arterioles, further branch into tiny capillaries, where nutrients and wastes are exchanged, and then combine with other vessels that exit capillaries to form venules, small blood vessels that carry blood to a vein, a larger blood vessel that returns blood to the heart. This page wont have buttons or ads, just your puzzle.
Coronary heart disease hp2020 target stroke hp2020 target vessels, including those in the brain. The heart s role is to pump oxygenrich blood to every cell in the body. Plaque is made of cholesterol deposits, which make the inside of arteries narrow and decrease blood flow. The circulatory system is made up the heart, blood vessels, and blood.
The primary function of the heart and blood vessels is to transport oxygen, nutrients, and byproducts of metabolism. Blood volumethe larger the volume, the more pressure is exerted on vessel walls. Capillary exchange is the process of nutrients passing into the bodys cells and waste products passing out. The circulatory system the circulatory system and the lymphatic system most of the cells in the human body are not in direct contact with the external environment, so rely on the circulatory system to act as a transport service for them. If laid end to end, your blood vessels would stretch out to about 161,000 km. About my heart and blood vessels i get dizzy if i stand up too quickly. With the exception of the pulmonary artery, they carry oxygenrich blood. The majority of the blood vessels in your body are capillaries. Treatment for heart and blood vessel problems may involve medications drugs, regular testing to monitor the heart and blood vessels, surgery, or a combination of these depending on your individual circumstances. Blood is carried in a closed system of vessels that begins and ends at the heart the three major types of vessels are arteries, capillaries, and veins arteries carry blood away from the heart, veins carry blood toward the heart capillaries contact tissue cells and directly serve cellular needs. The heart is an essential pumping organ in the cardiovascular system where the right heart pumps deoxygenated blood returned from body tissues to the lungs for gas exchange, while the left heart pumps oxygenated blood returned from the lungs to tissue cells for. From there, the blood flows to smaller arteries and then capillaries. The brain needs a constant supply of blood, which carries the oxygen and nutrients it needs to function.
The most common type in the united states is coronary heart disease also known as coronary artery disease. Heart disease and stroke are cardiovascular heart and blood vessel diseases cvds. First3rd editions by the heart committee of the new york tuberculosis and health association published under title. Oxygenated and nutrient rich blood is distributed to tissues via the arterial system, which branches into smaller and smaller blood vessels from arteries to arterioles to capillaries where most exchange occurs. Aqa, ocr, edexcel gcse biology the heart and blood vessels answers name. Vision loss hbp can strain the vessels in the eyes. The terms artery and vein are not determined by what the vessel transports oxygenated blood or deoxygenated but by whether the vessel flows to or from the heart. The venules and veins, which send deoxygenated blood to the lungs to receive oxygen and unload carbon dioxide. While cvd includes many conditions, 74 years with heart failure hds diagnosis cardiovascular disease cvd is a term used to describe a group of diseases that affect the heart or blood this fact sheet highlights stroke and a few heart diseases. The most important function of the cardiovascular system the heart and blood vessels together is to keep blood flowing through capillaries.
The capillaries are thinwalled vessels interconnected with the smallest arteries and smallest veins. The major structures of the cardiovascular system, the heart and blood vessels, play a vital role in human physiology. Arteries and arterioles carry blood away from the heart figure 1, figure 2, and. Learn anatomy and physiology heart blood vessels with free interactive flashcards. Eventually, the smallest arteries, vessels called arterioles, further branch into tiny capillaries, where nutrients and wastes are exchanged, and then combine with other vessels. An artery is a blood vessel that carries blood away from the heart, where it branches into eversmaller vessels. All blood vessels entering the heart are called veins inferior and superior vena cava, pulmonary vein.
I had a heart attack but i didnt feel chest pain or other systems. A stroke occurs when one of these arteries to the brain is either blocked or bursts. High blood pressure increases the force of blood through your arteries and can damage artery walls. Coronary artery disease is caused by the buildup of plaque in the walls of the coronary arteries, the blood vessels that supply oxygen and blood to the heart. Arteries and arterioles carry blood away from the heart. Cardiovascular disease cvd vessels, including those in. Blood vessels functions arteriesdistribution of nutrients, gases, etc. Blood vessels are found in almost every part of the body.
The smallest blood vessel is five micrometers wide. The most common type is coronary artery disease, which affects blood flow to the heart. The middle layer of the heart s wall makes up the bulk of the tissue in the heart and is called the a. The healthy heart handbook for women 2007, by national heart, lung, and blood institute pdf at nih filed under. Get a printable copy pdf file of the complete article 378k, or click on a page image below to browse page by page.
Approximately 7,000 l of blood is pumped by the heart every. Physiology and anatomy of blood vessels annajah staff. Capillariessmallest blood vessels, only one blood cell may pass through at a time, where materials are exchanged with the cells of the body. Strength of heart contractionsaffect cardiac output. Eventually, it transfers its oxygen to body cells and returns back to the heart through the veins.
Attached to the heart is blood vessels that transport blood in. The science of the heart and circulation national space. The heart and blood vessels genes and disease ncbi. Blood flow and blood pressure regulation biology for. The blood vessels a network of interconnecting arteries, arterioles, capillaries, venules, and veins provide the pathway in which blood travels. About the heart and blood vessels stanford childrens health. Take your medications, if told by your doctor, to lower your blood pressure, blood sugar, andor blood cholesterol levels. When our heart and blood vessels are working at their best, blood flows easily and is circulated around the body freely. Veinscarry blood to the heart, farther from the heart and the pressure in them is often low, so thinner walls, little o 2, lots of co 2, dark red almost brown color because of carbaminohemoglobin. The human heart pumps blood through the arteries, which connect to smaller arterioles and then even smaller capillaries. A mind map containing questions for the b2 topic in aqa gcse biology. Nomenclature and criteria for diagnosis of diseases of the heart. The major function of the cardiovascular system is transportation.