Blood - Platelets and Heamostasis
- Created by: une-meduse
- Created on: 24-02-14 19:53
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Clues
- Coagulation reinforces platelet plug with __________ that act as glue (6, 7)
- Platelets are cytoplasmic fragments of larger cells called _________ (14)
- Platlets are kept mobile but inactive by ________ and prostacyclin, which are secreted by endothelial cells lining the blood vessels (6, 5)
- The mature megakaryoblast presses against a sinusoid in the _________ and sends cytoplasmic extensions through the _______ wall, which rupture and release platelets into the bloodstream (3, 6, 8)
- The megakaryoblast repeatedly mitoses but _________ does not occure, resulting in a stage IV megakaryocyte (11)
- The series of reactions set in motion to stop bleeding after a blood vessel wall breaks (11)
- There are essentially three steps to haemostasis: vascular spasm, platelet plug formation and ___________ (11)
- What hormone regulates the formation of platelets? (14)
- When platelets adhere to collagen, they release chemical messengers including: _______, serotonin and thromboxane A2 (9, 11)
- Which plasma protein stabilises bound platelets and collagen fibers? (3, 10, 6)
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