Blood Composition and Function PDF

topic 18 Study online at https://quizlet.com/_ehtfuq 1. blood is connective tis- WBC, RBC, and platelets sue made of 2. plasma the fluid (mostly water) suspends the formed elements 3. transportation nutrients, O2, hormones, water, and byproducts 4. defense WBC travel to protect us and platelets trav...

topic 18 Study online at https://quizlet.com/_ehtfuq 1. blood is connective tis- WBC, RBC, and platelets sue made of 2. plasma the fluid (mostly water) suspends the formed elements 3. transportation nutrients, O2, hormones, water, and byproducts 4. defense WBC travel to protect us and platelets travel to wounds for clots 5. homeostasis regulate body temperature, water content, and PH 6. composition of blood -hematocrit: the percentage of RBC in blood, 45% is normal -buffy coat: WBC and platelets -blood plasma: fluid 7. characteristics of blood -bright red w oxygen -duksy read w out oxygen -temp is slightly higher than body temp -ph is about 7.4 (slightly basic) 8. what are the compo-albumin: transports fatty acids and steroid hornents of blood plasma mones, draws in water from tissue -globulins: alpha and beta are made in the liver and transport lipids and fat soluble vitamins, gamma are immunoglobulins from plasma cells -fibrinogen: essential for blood clotting 9. explain blood plasma -mostly water with substances -most substances are made in the liver 10. hemopoiesis producing rbc in the red bone marrow (liver and spleen can generate formed elements if needed) 11. hemopoietic stem cells all formed elements come from this type of cell, and (hemocytoblast) forms into 2 possible cell types 12. lymphoid stem cells 1/3 topic 18 Study online at https://quizlet.com/_ehtfuq becomes a lymphocyte for immunity, matures in various places 13. myeloid stem cells becomes erythrocytes, platelets, granular leukocyte, or monocyte 14. epo from the kidney due to low O2 levels, stimulates production of RBC 15. thrombopoieten from liver and kidney, stimulates development of platelets 16. cytokinesis local cellular chemicals that stimulate resistance to disease, 2 types 17. colony stimulating fac- stimulate differentiation of myeloblasts, or induces tors production of monocytes 18. interleukins signaling molecules that may function in hemopoiesis, inflammation, and specific immune responses 19. explain bone marrow -can use a biopsy to detect cancer or anemia -transplant -both require a large needle into the lilac crest 20. explain erythrocytes -commonly called red blood cells -carry o2 away from the lungs and brings some co2 back to the lungs -matures in red bone marrow, extrudes nucleus and most organelles -they rely on anaerobic respiration and don't synthesize protein -plump border, thin center, flexible, move very slow in capillary 21. explain the compo-iron: hold oxygen, less than 20% consumed is abnents of an erythrocyte sorbed -copper: helps absorb and transport iron, needed to produce hemoglobin 2/3 topic 18 Study online at https://quizlet.com/_ehtfuq -zinc: facilitates the synthesis of heme, builds heme -b vitamins: folate and B12 facilitate dna synthesis 22. explain hemoglobin -molecule of 4 folded proteins and a heme which as iron on it -each iron can hold 1 O2 molecule -will carry about 24% of CO2 back to the lung, 76% dissolve in plasma or form bicarbonate ion 23. percent saturation percent of hemoglobin sites occupied by o2, measured by a pulse oximeter (normal is 95-100%) 24. if O2 production deincreases and vice versa creases then EPO production 3/3