Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Hematology Exam #1
CLLS 2015
| Term | Definition |
|---|---|
| genetics | the study of transmission of inherited disease |
| hematopoiesis | the formation and development of blood cells; chiefly in the bone marrow |
| extramedullary hematopoiesis | the formation and development of blood cells outside the bone marrow in sites such as the liver and spleen |
| Athansius Kircher | 1657. Saw a microbe through a microscope and described them as 'worms' in the blood. Early Scientist/Jesuit Scholar. |
| Antonie van Leeuwenhoek | 1674. aka "Father of Microbiology". Gave an account of RBC's. |
| Guilio Bizzozero | 1800's. Discovered platelets and called them 'petite plaques. Credited for platelets role in coagulation and the discovery of H.pylori. Was a Medical Researcher and Italian Physician. |
| James Homer Wright | 1902. Developed the Wright Stain to be able to examine blood differently through a microscope. Was a Pathologist. |
| Describe the Functions of Hematology | Describe the Functions of Hematology |
| plasma | the straw-colored fluid component of blood |
| serum | straw-colored fluid that is present after blood clots |
| Embryonic Hematopoiesis | makes erythroblasts in the mesoderm of the embryo |
| Fetal-Mesoblastic Phase | Occurs in the fetus. 'yolk sac phase'. creates Primary Plueripotential cells. Is characterized by fetal hemoglobin. |
| Fetal-Hepatic Phase | Occurs 4-5 weeks of gestation. Occurs in the liver where erythroblasts develop in to non-nucleated RBC's. Remains the primary source of hematopoiesis until 1-2 weeks after birth. {Midfetal life- secondary hematopoeitic organs are developed} |
| Medullary Phase | Hematopoeisis occurs in the bone marrow. Liver production is diminished. Production of stem cells for all 4 stem lines. |
| After Birth | Hematopoiesis stops in the liver 1-2 weeks after. Bone Marrow is the only site for production of erythrocyte, granulocytes, monocytes, platelets and B lymphocytes. |
| Bone Marrow | One of the largest organs in the body. Tissue found in the cavities of the bones. Comes in the form of yellow and red. Function: Hematopoiesis. |
| Yellow Bone Marrow | Mostly fat. Doesn't have a role in hematopoiesis. |
| Red Bone Marrow | Hematopoietically active. Network of capillary and fibrous connective tissue. Production of leukocytes, erythrocytes, and thrombocytes. |
| Hematopoietic Cell Development (aka. Monophyletic Theory) | all blood cells are derived from one stem cell line. |
| Stages in the Monophyletic Theory | Primitive, multipotential cells; intermediate cells; and mature cells. |
| Monophyletic Theory- Primitive, Multipotential Cells | Occurs during the mesoblastic stage. Forms stem cell. Most immature cells. Able to differentiate into all blood cell lines when stimulated by chemical stimulus. 1% of bone marrow population. |
Created by:
acsideris
Popular Laboratory Science sets