basal rate. Materials: Stop watch‚ metronome‚ stairs Methods: • Eight subjects took their own resting‚ or basal‚ heart rate for 15 seconds while standing up. Some subjects chose to take their heart rate at their carotid artery‚ and some took their pulse using their radial artery. This number was multiplied
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This can be measured in either the artery in the neck (Called the carotid artery) or in the wrist. Though the beat is stronger in the neck it is sometimes more difficult to locate and so most people tend to measure it from the wrist. For a healthy person of my age a pulse rate between 60 and 100 is considered
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which are called the coronary arteries. A heart attack occurs over a time caused by not eating properly e.g. eating burgers/fatty foods. Also‚ a lack of exercise can contribute to a heart attack and fatty material that built up in the arteries make the blood flow limited. The blood flow slows down and also the amount of oxygen decreased in the blood and it will not reach the vital organs in the body. The clot‚ often caused by rupturing or tearing of plaque in an artery‚ is sometimes called a coronary
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Study guide for Lecture Exam II Bio 202 (Heart‚ BV’s and Respiratory system) 1. The pulmonary circuit is supplied by which ‘side” of the heart? The systemic circuit? The right atrium 2. What is the functional difference between desmosomes and gap junctions? Desmosomes prevent adjacent cells from separating during contraction and gap junctions allow ions to pass from cell to cell transmitting current across the entire heart 3. What are the different effects of the PNS and SNS on heart rate?
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Circulatory systems Closed circulatory systems: • Blood leaves heart under pressure to arteries then arterioles then capillaries. • Capillaries come in large numbers. They exchange substances between the blood and cells. • After passing through capillaries‚ blood goes back to the heart via veins. • Valves in the veins ensure that blood only flows in one direction. Single circulatory system: • Heart pumps deoxygenated blood. • Gaseous exchange (diffusion of CO2 from blood to H2O and diffusion
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the pulse involves less human error than feeling it. 2. The maximum pressure exerted when blood is ejected into the aorta during contraction of the left ventricle is known as Systolic blood pressure. The minimum pressure which is exerted in the arteries as a result of ventricular relaxation is known as Diastolic blood Pressure. The difference between systolic and diastolic blood pressure is known as Pulse pressure. Pulse pressure = Systolic pressure- Diastolic pressure The
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Abstract This paper introduces a new approach understanding about the risk factors for cardiovascular disease (CVD) in African Americans‚ to improve self-efficacy for diet and physical activity‚ and to increase intentions to eat healthier and be physically active. This paper examines the effects of risks associated with being an African American with cardiovascular disease. These changes in behavioral‚ educational and physical activity may reverse the effects of cardiovascular disease. Providing
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circulatory strain is too high‚ it puts additional strain on your arteries (and your heart) and this may prompt to heart attack and strokes. The force that makes weight on veins that is your systolic blood pressure. An ordinary systolic pressure is beneath 120. A measurement of at least 140 is high blood strain or high blood pressure (additionally called hypertension). The diastolic measurement‚ or the base number‚ is the strain in the arteries when the heart rests between pulsates. This is the time when
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prevent overcrowding and help with teeth alignment (WebMD). An alternative treatment includes coronary bypass surgery or angioplasty. Coronary bypass surgery creates a new routes around blocked arteries so blood flow can deliver necessary nutrients and oxygen to the heart (Kulick). Angioplasty will widen arteries or veins to help with blood flow
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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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