22308532
Description
Flashcards by Evian Chai, updated more than 1 year ago
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Created by Evian Chai
over 4 years ago
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| Question | Answer |
| What is the size and shape of a red blood cell? | 7 uM Biconcave disc |
| RBCs can only undergo anaerobic metabolism of glucose because | They have no organelles |
| ...diffrentiates to.... after ejecting ...., which then becomes a RBC after.... | Normocyte-->Reticulocyte after nucleus ejected Organelles lost |
| What do platelets (thrombocytes) look like and what do they do? What are they from and where? | 1. Biconcave dark granules They play a role in haematostasis /maintaining blood vessels by forming clots 2. Formed from fragmentation of macrophages in bone marrow |
| What are the precursors of platelets and what do they look like? What fuses together to become vesicles that form platelets? | 1. Macrophages Giant cells with a single irregular nucleus 3. Endoplasmic reticulum tubules |
| Eosinophils, Basophils and Neutrophils are what kind of leukocyte? | Granulocytes (multi lobed) |
| Monocytes and Lymphocytes are what kind of leukocyte? | Agranulocytes (one nuclues, no lobes) |
| Which leukocyte has many lobes, makes up 90% of the granulocytes, release granules for phagocytic activity, and die after a single burst of activity? | Neutrophils |
| Which leukocyte is bi-lobed, stains blue, and releases inflammatory histamine? | Basophil |
| Which leukocyte is bi-lobed, stains pink, releases antihistaminases in response to allergy/infection, and is phagocytic? | Eosinophil |
| Which leukocyte is largest, has a horse shoe shaped nuclues, presents antigens, and does phagocytosis? | Monocytes |
| What is the relationship between monocytes and macrophages? | Monocytes become macrophages after leaving circulation |
| Which leukocyte stains purple, has a single large round nucleus, and primarily provides specific immunity? What are the three types? | Lymphocytes 1. T cells flag 2. B cells release antibodies 3. Natural Killer cells |
| At 2-2.5 weeks in utero, where are RBCs? | Outside embryo in extraembryonic membrane as blood islands |
| At 5 weeks, where do the blood islands migrate to? | The liver, to start producing RBC and WBC |
| Where do RBC/WBC production move to 5 months in utero? | Bone marrow, but can migrate to liver/spleen if needed |
| What is plasma? What is it made of? | 1. Fluid component of blood 2. Aqueous composition of salts, nutrients, plasma protein |
| What are the three plasma proteins? | 1. Albumin (transporters) 2. Fibrinogen (fibrin precursor) 3. Globulins (immunoglubulin-->antibodies) |
| Which cells have a lymphoid progenitor instead of myeoid? | Small lymphocytes (B/T) Large lymphocytes (Natural killer) |
| Summary |
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