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問題一覧
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also called as cardiovascular system. an organ system and transport nutrients
circulatory system
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Functions of the circulatory system
Transportation of nutrients, oxygen, carbon dioxide, hormones to other body parts. helps in fighting diseases. stabilizes temperature and pH levels. maintaining homeostasis
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center of the ciculatory system
heart
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largest part of the heart is usually on the
left side of the human's body
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anatomy of human heart
aorta. pulmonary artery. pulmonary veins. left atrium. left ventricle. cardiac muscle. right ventricle. inferior vena cava. right atrium. superior vena cava.
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blood vessels that carry blood away from the heart.
arteries
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smallest type of blood vessels. one cell layer thick only.
capillaries
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a chamber where the blood is being expelled from the heart. has thick walls.
ventricle
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a stout wall that separates the left and right ventricle
interventricular septum
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muscles located in the ventricles of the heart.
papillary muscle
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5 papillary muscles
three in the right and two in the left.
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4 heart valves
pulmonary semilunar valve. bicuspid valve. tricuspid valve. aortic semilunar valve.
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allows blood to flow in one direction through the heart. situated around the cardiac skeleton.
heart valves
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two types of heart valves
mitral or bicuspid valve and Tricuspid valve
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a dual flap valve in the heart that lies between the left atrium and left ventricle
mitral or bicuspid valve
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found between the right atrium and right ventricle
tricuspid valve
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3 layered wall
pericardium. myocardium. endocardium.
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blood vessels that carries blood towards the heart. less muscular than the arteries.
veins
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4 types of veins
superior vena cava. inferior vena cava. jugular veins. pulmonary veins.
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returns deoxygenated blood from the systematic circulation. 24 mm in length.
superior vena cava
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carries deoxygenated blood from the lower and middle body into the right atrium of the heart.
inferior vena cava
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bring deoxygenated blood from head back to the heart
jugular veins
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carries blood-containing oxygen from the lungs to the heart.
pulmonary veins
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it is body fluid that delivers necessary substances to the cells and transports metabolic waste products away from the cells
blood
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Functions of the blood
supplies oxygen to the tissues. supplies nutrients. removal of waste such as carbon dioxide and lactic acid. detection of antibodies. transport of hormones. regulation of the body pH. regulation of the core body temperature.