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| essentail in clotting, lack nucleus, formed in bone marrow live 5-8 days |
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| begins with egg ferilization and ends with birth |
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| limits/allows blood flow through capillaries; cold hands when orfkushed skin |
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| from heart ventricle via pulmonary artery with low o2 to lungs and return with high o2 via pulmonary vien to left atria |
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| low concentration of o2 in blood to lungs to release co2 and pick up o2 |
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| high o2 with blood return from lungs to heart for systemic circulation |
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| hemoglobin carries o2 to cells and co2 away; live 120 days; concave, no nucleus |
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| defend body , 5 types live 2 yrs; rbc/wbc made in red bone marrow |
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| passed on to offspring, does not show unless combined with another recessive |
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| nose, pharynx, trachea, larynx, bronchi/bronchiole, alveoli |
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| mitochondria, nucleus,flagellum,aceosome; contain 23 genes; determines sex sperm:producing cells |
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| from heart ventricle via aorta (high o2) to body and returned via inferior and superior vena cava (low 02) right atria |
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| disruption of blood to brain; nerve cell death if no o2 for 5-8 mins |
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| help open with c shaped cartilage, esophagus passes behind; air passage to lungs |
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| organisms carrying genes from another species; use virus as transport mechanism |
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| from two eggs; same or different sex, two placenta |
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| from one egg, always smae sex, one placenta with two umbilical cords siamese twins incomplete division into two idividuals |
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| can cause mutations to genes; uva-aging and uvb- burns of skin |
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| low o2 blood to heart-vales protect backflow |
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| lower heart chambers- push blood to lungs or body |
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| collect blood from capillaries and convey to veins toward heart; low o2 |
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