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Questions and Answers
What is the main component of the cell coat of platelets?
What is the main component of the cell coat of platelets?
- Granulomere
- Hyalomere
- Polymorphic glycoprotein molecules (correct)
- Actin and Myosin filaments
In platelets, what region of the cytosol displays a peripheral clear region and a central darker region?
In platelets, what region of the cytosol displays a peripheral clear region and a central darker region?
- Glycosaminoglycan region
- Actin and Myosin filaments
- Granulomere
- Hyalomere (correct)
What assists platelets in maintaining their discoid morphology?
What assists platelets in maintaining their discoid morphology?
- Microtubules (correct)
- Tubular system
- Granule contents
- Polymorphic glycoprotein molecules
Which system connects to invaginations of the plasmalemma in platelets?
Which system connects to invaginations of the plasmalemma in platelets?
What serves in platelet movements and retraction within the context of exerting haemostatic functions?
What serves in platelet movements and retraction within the context of exerting haemostatic functions?
Where are external elements allowed to enter platelets and the release of granule contents facilitated?
Where are external elements allowed to enter platelets and the release of granule contents facilitated?
The dense tubular system in platelets is responsible for:
The dense tubular system in platelets is responsible for:
Which part of the platelet is a site of storage for glycoproteins and enables filopodia formation during shape change and activation?
Which part of the platelet is a site of storage for glycoproteins and enables filopodia formation during shape change and activation?
What is the primary function of the dense tubular system within platelets?
What is the primary function of the dense tubular system within platelets?
Which type of granules in platelets contain growth factors like PDGF and adhesive proteins like vWF?
Which type of granules in platelets contain growth factors like PDGF and adhesive proteins like vWF?
What organelle is found in the Granulomere of platelets that contains hydrolytic enzymes for clot resorption?
What organelle is found in the Granulomere of platelets that contains hydrolytic enzymes for clot resorption?
Which molecules are present in Delta granules of platelets and are secreted during vasoconstriction?
Which molecules are present in Delta granules of platelets and are secreted during vasoconstriction?
Which component of the platelet releases molecules like serotonin and ADP during platelet activation?
Which component of the platelet releases molecules like serotonin and ADP during platelet activation?
What is the function of the Granulomere's enzyme system for platelets?
What is the function of the Granulomere's enzyme system for platelets?
Which type of granule in platelets serves purposes beyond hemostasis such as inflammation and angiogenesis?
Which type of granule in platelets serves purposes beyond hemostasis such as inflammation and angiogenesis?
What is the role of platelets in the haemostatic process following vessel wall injury?
What is the role of platelets in the haemostatic process following vessel wall injury?
What is the role of GPIIbIIIa receptors in platelet aggregation?
What is the role of GPIIbIIIa receptors in platelet aggregation?
Which step represents the Primary Haemostatic Plug formation?
Which step represents the Primary Haemostatic Plug formation?
What role does thrombin play in the formation of the Secondary Haemostatic Plug?
What role does thrombin play in the formation of the Secondary Haemostatic Plug?
In pathologically developed platelet-rich thrombi, what is the essential therapeutic strategy?
In pathologically developed platelet-rich thrombi, what is the essential therapeutic strategy?
Which type of drugs target ADP receptors to inhibit platelet function?
Which type of drugs target ADP receptors to inhibit platelet function?
Which component contracts during Clot Retraction and Stabilization?
Which component contracts during Clot Retraction and Stabilization?
What is the final step to stabilize and cement the platelet plug?
What is the final step to stabilize and cement the platelet plug?
What is the role of thrombin in platelet shape changes?
What is the role of thrombin in platelet shape changes?
Which component is responsible for releasing TXA2 in platelet activation?
Which component is responsible for releasing TXA2 in platelet activation?
What triggers the activation and degranulation of platelets?
What triggers the activation and degranulation of platelets?
What happens to platelet shape during activation?
What happens to platelet shape during activation?
Which of the following is a haemostatic content released during platelet degranulation?
Which of the following is a haemostatic content released during platelet degranulation?
What is the effect of released TXA2 and ADP on platelet activation?
What is the effect of released TXA2 and ADP on platelet activation?
Which of the following is NOT released during activated platelet degranulation?
Which of the following is NOT released during activated platelet degranulation?
What is the most distinguishing feature of platelets among other blood cells?
What is the most distinguishing feature of platelets among other blood cells?
Which organelle is abundant in the cytoplasm of a megakaryocyte?
Which organelle is abundant in the cytoplasm of a megakaryocyte?
What happens to the nucleus of a megakaryoblast before platelets begin to be formed?
What happens to the nucleus of a megakaryoblast before platelets begin to be formed?
What cellular structure forms during the maturation of a megakaryocyte?
What cellular structure forms during the maturation of a megakaryocyte?
Which component is NOT abundant in the cytoplasm of a megakaryocyte?
Which component is NOT abundant in the cytoplasm of a megakaryocyte?
What is the function of demarcation membranes in a maturing megakaryocyte?
What is the function of demarcation membranes in a maturing megakaryocyte?
What distinguishes the cytoplasm of a mature megakaryocyte from other cells?
What distinguishes the cytoplasm of a mature megakaryocyte from other cells?
What triggers platelet shape changes during hemostasis?
What triggers platelet shape changes during hemostasis?
Which molecule released during platelet degranulation acts in an autocrine manner to amplify platelet activation in conjunction with other activators?
Which molecule released during platelet degranulation acts in an autocrine manner to amplify platelet activation in conjunction with other activators?
What is the primary function of platelet degranulation during hemostasis?
What is the primary function of platelet degranulation during hemostasis?
Which receptor's affinity is increased during platelet activation to amplify the common final pathway?
Which receptor's affinity is increased during platelet activation to amplify the common final pathway?
What effect does the influx of extracellular Ca have on platelets during activation?
What effect does the influx of extracellular Ca have on platelets during activation?
Which enzyme acts on arachidonic acid to form TXA2 during platelet degranulation?
Which enzyme acts on arachidonic acid to form TXA2 during platelet degranulation?
What is the role of alpha and dense granules in platelet degranulation?
What is the role of alpha and dense granules in platelet degranulation?
How do released TXA2 and ADP contribute to platelet activation?
How do released TXA2 and ADP contribute to platelet activation?
What is the final step that stabilizes and cements the platelet plug?
What is the final step that stabilizes and cements the platelet plug?
Which molecule is targeted by Thromboxane (TXA2) inhibitors to inhibit platelet activation?
Which molecule is targeted by Thromboxane (TXA2) inhibitors to inhibit platelet activation?
What role does thrombin play in platelet shape changes?
What role does thrombin play in platelet shape changes?
What is the primary function of Glycoprotein IIb/IIIa Antagonists in platelet action?
What is the primary function of Glycoprotein IIb/IIIa Antagonists in platelet action?
During platelet degranulation, which component is NOT typically released?
During platelet degranulation, which component is NOT typically released?
What is the effect of Protease-activated receptor-1 Antagonists in platelet function?
What is the effect of Protease-activated receptor-1 Antagonists in platelet function?
Which process creates the Primary Haemostatic Plug through irreversible binding of platelets?
Which process creates the Primary Haemostatic Plug through irreversible binding of platelets?
What does Cross-linking and polymerization of fibrin by activated Factor XIII do in platelet function?
What does Cross-linking and polymerization of fibrin by activated Factor XIII do in platelet function?
What is the role of thrombin in platelet activation?
What is the role of thrombin in platelet activation?
During platelet degranulation, what molecules are NOT typically released?
During platelet degranulation, what molecules are NOT typically released?
Which component of platelets is responsible for filopodia formation during shape change and activation?
Which component of platelets is responsible for filopodia formation during shape change and activation?
What is the primary function of platelet degranulation?
What is the primary function of platelet degranulation?
Which process is NOT directly influenced by thrombin in platelets?
Which process is NOT directly influenced by thrombin in platelets?
Which organelle in platelets stores hydrolytic enzymes for clot resorption?
Which organelle in platelets stores hydrolytic enzymes for clot resorption?
During platelet activation, which component is responsible for releasing molecules like ADP?
During platelet activation, which component is responsible for releasing molecules like ADP?
What is the effect of released TXA2 on platelet activation?
What is the effect of released TXA2 on platelet activation?
Which organelle is primarily involved in mediating platelet shape changes during activation?
Which organelle is primarily involved in mediating platelet shape changes during activation?
What is the primary function of thrombin in platelet activation?
What is the primary function of thrombin in platelet activation?
During platelet aggregation, which molecule plays a key role in connecting adjacent platelets and stabilizing the clot?
During platelet aggregation, which molecule plays a key role in connecting adjacent platelets and stabilizing the clot?
What is the consequence of platelet degranulation during activation?
What is the consequence of platelet degranulation during activation?
Which cellular component is involved in the release of molecules like serotonin and ADP during platelet activation?
Which cellular component is involved in the release of molecules like serotonin and ADP during platelet activation?
What is the main consequence of thrombin activation on platelets?
What is the main consequence of thrombin activation on platelets?
Which organelle within platelets contains hydrolytic enzymes involved in clot resorption?
Which organelle within platelets contains hydrolytic enzymes involved in clot resorption?
Which molecule released during platelet degranulation aids in promoting vasoconstriction?
Which molecule released during platelet degranulation aids in promoting vasoconstriction?
What is the primary role of thrombin in platelet activation?
What is the primary role of thrombin in platelet activation?
During platelet degranulation, which molecules are primarily released?
During platelet degranulation, which molecules are primarily released?
What is the main function of GPIIbIIIa receptors in platelet aggregation?
What is the main function of GPIIbIIIa receptors in platelet aggregation?
Which process requires the assistance of microtubules in platelets?
Which process requires the assistance of microtubules in platelets?
What cellular component is responsible for storing glycoproteins and facilitating filopodia formation in platelets?
What cellular component is responsible for storing glycoproteins and facilitating filopodia formation in platelets?
Which of the following is a primary step in platelet activation?
Which of the following is a primary step in platelet activation?
What is the function of the cell coat in platelets?
What is the function of the cell coat in platelets?
What is the role of ADP during platelet activation?
What is the role of ADP during platelet activation?
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