left). The right atrium receives deoxygenated blood from the body via the superior and inferior vena cava. The right ventricle receives blood from the right atrium and pumps it to the lungs via the pulmonary artery. The left atrium receives oxygenated blood from the lungs via four pulmonary veins. The left ventricle is the largest and most muscular chamber. It receives oxygenated blood from the lungs via the left atrium and pumps blood into the systemic circulation via the aorta. Valves: There
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pulmonary artery. This is the only artery that carries deoxygenated blood. The pulmonary artery was quite thin and rubbery and would then have split into two tubes‚ the left and right arteries. These arteries then carry blood to the lungs. We could not see the split in the arteries during the dissection but we did find the pulmonary valve which comprised of three semi lunar cusps. This valve prevents the backflow of blood into the right ventricle. We then discovered the two pulmonary veins‚ these veins
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certain point will cause a jerk movement. In medical terms when an individual is tapped on patellar tendon (area below the knee cap) using a reflex hammer‚ it causes a sudden movement in the lower leg (like kicking movement). This happens due to the stretch in quadriceps muscle spindle that transmit the signal to the spinal cord especially to the lumbar segment L3 and this send
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through the vena cava and pumps it through the pulmonary artery to the lungs‚ and the left side receives the oxygenated blood from the lungs through the pulmonary vein and pumps it into the aorta to be distributed all over the body bringing oxygen and glucose to cells who need it for respiration. A natural pacemaker made of nerve
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of : heart (심장)‚ and vessels (혈관)‚ arteries (동맥)‚ capillaries (모세혈관) and veins (정맥). A functional cardiovascular system is vital (필수적인) for supplying oxygen and nutrients to tissues and removing wastes from them. Paths of Circulation: Pulmonary(폐의) Circuit : carrying blood to the lungs and back 1. The pulmonary circuit is made up of vessels that convey blood from the right ventricle to the pulmonary arteries to the lungs‚ alveolar capillaries‚ and pulmonary veins leading from the lungs to the left
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left‚ so that about 2/3 of the heart is located on the body’s left side with the other 1/3 on right. The top of the heart‚ known as the heart’s base‚ connects to the great blood vessels of the body: theaorta‚ vena cava‚ pulmonary trunk‚ and pulmonary veins. Circulatory Loops There are 2 primary circulatory loops in the human body: the pulmonary circulation loop and the systemic circulation loop. 1. Pulmonary circulation: Pulmonary circulation transports deoxygenated
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to cell. C. Why does cardiac muscle have to be both elastic and strong? The heart to be both elastic and strong to meet the needs of human body. The elasticity of the atria and ventricles I s import to accommodate the preload that stretch of the myofibrils that is vital for cardiac output. D. Which of the three layers of the heart did the tissue used to make your slide originate from? Myocardium/muscle tissue Exercise 2: The
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femoral vein to the lower lobe of the right lung and then to exit out of the nose. The reason for this is because we were just informed that the female’s body was invaded by a bacterium‚ which is invading the right lung and this is our only hope of getting out of her body. Before we can start our journey I would like you to meet Mr. Windzel‚ he will be guiding us through the females body today. We are also going to be miniaturized to 8 microns long so that we can be injected into the femoral vein.
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and SL valves in terms of location‚ structure‚ and when they close. 11. Define/describe the terms chordae tendineae‚ papillary muscle‚ and trabeculae carneae. 12. Name (and locate) the veins that deposit their blood into the atria of the heart (which atria? deox- or oxygenated?). 13. Name (and locate) the arteries that take blood away from the heart (from which ventricle? deox-or oxygenated blood?). 14. Distinguish between pulmonary‚ coronary and systemic circulation. 15. Track a drop of blood
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CHAPTER 23 Circulation Chapter Objectives Opening Essay Describe the adaptations of giraffes and humans to circulate blood against the pull of gravity. Circulatory Systems 23.1 23.1 23.2 Describe the general functions of a circulatory system. Compare the structures and functions of gastrovascular cavities‚ open circulatory systems‚ and closed circulatory systems. Compare the cardiovascular systems of a fish‚ an amphibian‚ a reptile‚ a bird‚ and a mammal. The Human Cardiovascular System
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