Placental Information and Courses from MediaLab, Inc.
These are the MediaLab courses that cover Placental and links to relevant pages within the course.
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| Which of the following immunoglobulins is capable of fixing complement by the classical pathway: | View Page |
| A solution of gamma globulins containing anti-Rh (D) is given to an Rh (D) negative mother to: | View Page |
| Match antibody group with corresponding descriptor: | View Page |
| Iron Transport Once absorbed through the mucosal cells of the duodenum, iron is bound to a carrier plasma protein, transferrin (Tf), for movement to sites of utilization. Almost all iron in plasma is bound to Tf, and most Tf-bound iron is carried to the bone marrow to be incorporated into developing erythrocytes. Transferrin is normally about 20% to 40% saturated with iron. (5)Transferrin releases iron to specific transferrin receptors (TfRs) for movement into cells. Transferrin receptors are found on all cells, but are found in relatively high concentration in erythroid precursors, hepatocytes, and placental cells. When the capacity of plasma Tf to bind iron is exceeded, i.e., transferrin saturation (TS) is higher than normal, excess iron is taken up by hepatocytes and other cells. A brief summary of iron metabolism is illustrated. | View Page |