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Anatomy Ch 10-11 Journal
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What is the composition of blood? Plasma 55% (mostly water) Formed elements 45% –Erythrocytes (red) –Leukocytes (white) –Platelets (clotting)
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What color is blood? –Oxygen-rich blood is scarlet red –Oxygen-poor blood is dull red
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What are the four main blood types? A B AB O
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What is an embolus? A thrombus that breaks away and floats freely in the bloodstream that can later clog vessels in critical areas such as the brain.
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What is RhoGAM? The immune serum used to prevent maternal sensitization to Rh antigens.
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Describe WBCs (leukocytes): they use diapedesis to move in and out of blood vessels they locate areas of tissue damage through chemotaxis they move by ameboid motion they account for less than 1 percent of total blood volume
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Define systole and diastole. Systole: ventricle contraction Diastole: ventricle relaxation
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What structure divides the left from the right ventricle? interventricular septum
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Describe lub-dup. the first sound is longer and louder and is caused by closure of the AV valves; the second sound is shorter and sharper and is caused by closure of the semilunar valves
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Cardiac muscle is enclosed by a double sac of serous membrane known as the ___________. pericardium
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What is stroke volume? The volume of blood pumped out by each ventricle with each beat of the heart.
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What artery is behind the knee? Popliteal
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The path of blood flow within the systemic vascular system is: arteries, arterioles, capillary beds, venules, veins
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What lifestyle factors contribute to heart disease. Emotional stress Smoking Obesity High-fat/cholesterol diet Lack of exercise HOLES
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