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If you had additional hearts distributed throughout your body, what would be one likely advantage and one likely disadvantage?
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- Which of the following is the correct sequence of blood flow through pulmonary circulation? Group of answer choices Right atrium → right ventricle → pulmonary arteries → pulmonary capillaries (in lungs) → pulmonary veins → left atrium Left atrium → left ventricle → pulmonary arteries → pulmonary capillaries (in lungs) → pulmonary veins → right atrium Right atrium → right ventricle → pulmonary capillaries (in lungs) → pulmonary arteries → pulmonary veins → left atrium Left atrium → left ventricle → pulmonary capillaries (in lungs) → pulmonary arteries → pulmonary veins → right atrium Left atrium → left ventricle → pulmonary veins → pulmonary arteries → pulmonary capillaries (in lungs) → right atriumWhat do you think about artificial heart? How is real heart different to artificial heart? do you think that Dr. Cohn's idea of selling artificial hearts in the store will ever happen?Why are some of us more prone than others to coronary heart disease?
- Blood is pushed out of the heart through a large vessel, called the aorta. The aorta then divides into smaller and smaller blood vessels, eventually reaching vessels called capillaries. Capillaries are so small that oxygen and nutrients can diffuse across the vessel walls and into the tissues of the body, with CO2 and waste diffusing back into the blood. Let's say that the cross-sectional area of the aorta is 1 cm2 = 100 mm2. The blood pumps through the aorta at 100 mm/s but only through the capillaries at 1 mm/s. If each capillary has a cross-sectional area of 20 mm2, how many capillaries must there be in the body? Note: these numbers are not physiologically correct, but were chosen to make the math easier. The blood velocity through the aorta is closer to 300 mm/s. The capillaries have a total cross-sectional area of ~600,000 mm2 (6000 cm2), with a blood flow rate closer to 0.2 mm/s.In the cardiovascular dynamics experiment (part 2), if the right beaker simulates the flow of blood to the systemic circuit of the body, what do the right valve and flow tube represent? Select one: aortic valve and pulmonary veins bicuspid valve and pulmonary veins aortic valve and aorta bicuspid valve and aortaAll of the following mechanisms assist in returning venous blood to the heart except: a. an increase in heart rate b. pressure changes in the abdominal and thoracic cavities due to breathing c. contraction of skeletal muscles in the legs d. one-way valves located inside veins
- Why do you think it is important for heart valves to ensure that blood flows in only one direction in the heart?Which person's heart is working more efficiently? Why?I receive blood coming back to the heart from the systemic circuit. What am I? _____________ My job is to prevent the back flow of blood from the left ventricle to the right atrium when the ventricles contract. What am I? _____________ My job is to prevent the back flow of blood from the aorta to the left ventricle when the ventricles relax.What am I? ___________ I return blood from the myocardium to the right atrium. What am I? ___________ I am the pump for the pulmonary circuit. What am I? ____________ I am the pump for the systemic circuit. What am I? ____________ Word Options for Blank: aorta aortic valve bicuspid valve coronary sinus inferior vena cava left atrium left ventricle pulmonary arteries pulmonary trunk pulmonary valve pulmonary veins right atrium right ventricle superior vena cava tricuspid valve
- You are a red blood cell and you find yourself in the left atrium, from there you pass through the _____ into the ______. From there you will pass through the ______ and into the ______ as you start your journey through the systemic arteries. You very quickly get whisked into the left coronary artery. Yay! You will be delivering oxygen to the myocardium of the heart. Once you are done delivering oxygen to the myocardium you return to the inside of the heart via the ______ and enter the _______ Word Options for Blanks (some may not be used, some may be used more than once) aorta aortic valve bicuspid valve coronary sinus inferior vena cava left atrium left ventricle pulmonary arteries pulmonary trunk pulmonary valve pulmonary veins right atrium right ventricle superior vena cava tricuspid valveWhat is the function of the heart? Explain.The Belgian anatomist and physician Andreas Vesalius, in his textbook entitled De Humani Corporis Fabrica (published in 1543), made which of the following claims (contradicting one of Galen’s claims)? blood in the right ventricle of the human heart does not receive blood directly from the right atrium blood in the left ventricle of the human heart does not receive blood directly from the left atrium blood in the right ventricle of the human heart does not pass directly into the left ventricle blood in the right atrium of the human heart does not pass directly into the right ventricle blood in the left atrium of the human heart does not pass directly into the left ventricle