Which of the following best describes platelets?

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Multiple Choice

Which of the following best describes platelets?

Platelets are cytoplasmic fragments derived from mature megakaryocytes in the bone marrow and are essential for clotting. They lack a nucleus and rapidly respond to vessel injury by sticking to exposed collagen, releasing granule contents to recruit more platelets, and providing a surface that helps the coagulation factors form a fibrin clot. This makes them the specific cellular pieces that participate directly in hemostasis. Red blood cells are responsible for oxygen transport. White blood cells defend against infection. Plasma proteins that preserve osmotic balance (like albumin) help maintain blood volume and fluid balance.

Platelets are cytoplasmic fragments derived from mature megakaryocytes in the bone marrow and are essential for clotting. They lack a nucleus and rapidly respond to vessel injury by sticking to exposed collagen, releasing granule contents to recruit more platelets, and providing a surface that helps the coagulation factors form a fibrin clot. This makes them the specific cellular pieces that participate directly in hemostasis.

Red blood cells are responsible for oxygen transport. White blood cells defend against infection. Plasma proteins that preserve osmotic balance (like albumin) help maintain blood volume and fluid balance.

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