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- View these animations (http://openstaxcollege.org/l/coagulation) to explore the intrinsic, extrinsic, and common pathways that are involved the process of coagulation. The coagulation cascade restores hemostasis by activating coagulation factors in the presence of an injury. How does the endothelium of the blood vessel walls prevent the blood from coagulating as it flows through the blood vessels?A hemoglobin molecule has a smaller diameter than an albuminmolecule, but very little hemoglobin passes from the blood into thefiltrate. Explain why. Under what circumstances do large amounts ofhemoglobin enter the filtrate?True or false Chemically-linked hemoglobin moelcules can stay in the blood for as long as 72 hrs. Cow hemoglobin can be safelty used by humans. Free hemoglobin produces vasoconstruction of blood vesselsand increases blood pressure in patients.
- Hemoglobin O is found in the nuclei of red blood cells O can combine with 02, CO2, H+, NO, and CO O contains carbonic anhydrase O is found in the nuclei of red blood cells and contains carbonic anhydrase O all of theseA higher level of hemoglobin in the blood increases the blood’s density. This is the basis for a simple test that can be used to see if a prospective blood donor has a high enough hemoglobin level to donate safely. A drop of blood is placed in a copper sulfate solution, and the time for the drop to sink to the bottom is measured. If this time is too long, the hemoglobin level is toolow. Explain how this test works.The binding affinity of hemoglobin for oxygen is... Weaker at lower pHs Stronger at lower pHs Less cooperative at lower pHs Independent of pH
- Match the cell to its protein. RBC - SGLT Carbonic Anhydrase Myosin CFTRPlace a single word into each sentence to make it correct saturation The relationship between hemoglobin and Po2 is shown by an oxyhemoglobin dissociation curve. rises lowers At low Po2, the curve slowly load When the curve rises there is a rapid increase in oxygen loading. deficiency When the first heme group binds a molecule of oxygen, changes conformation to accept a second carbon dioxide Oxygen. Eventually at high Po2 levels, the hemoglobin approaches 100 % saturation and can not hemoglobin more oxygen.A developing fetus gets oxygen from its mothers blood. Fetal capillaries run through pools of maternal blood in an organ called the placenta. As fetal blood runs through these capillaries, it exchanges substances with the maternal blood around the capillary. The hemoglobin made by a fetus is different than that made after birth. Fetal hemoglobin binds oxygen more strongly at low oxygen levels than normal hemoglobin. How would fetal hemoglobins somewhat higher affinity for oxygen benefit the fetus?After oxygen diffuses into lung capillaries, it also diffuses into _______ and binds with _______. a. tissue fluid; red blood cells b. tissue fluid; carbon dioxide c. red blood cells; hemoglobin d. red blood cells; carbon dioxideWhich of the following are most closely associated with oxygen transport? (a) red blood cells (b) platelets (c) neutrophils (d) basophils (e) lymphocytesWhich of the following statements regarding the transport of oxygen by hemoglobin is correct? Upon binding of oxygen to heme, a shift in the position of the distal His ultimately induces the switch from T to R states When fully bound to oxygen, AG(R-state)SEE MORE QUESTIONSRecommended textbooks for you
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