Where are platelets stored?

Where are platelets stored?

• A. Liver
• B. Spleen
• C. Bone marrow
• D. Blood plasma

Answer: (B)

Platelets are stored in the spleen as a reserve pool. About a third of the body's platelets reside there and can be released into the bloodstream when needed, such as during injury or blood loss, helping to quickly raise the circulating platelet count. The liver isn’t the storage site (it’s more involved in producing thrombopoietin and other functions), and bone marrow is where platelets are produced rather than stored. Blood plasma is the liquid component they travel in, not a storage site.

Platelets are stored in the spleen as a reserve pool. About a third of the body's platelets reside there and can be released into the bloodstream when needed, such as during injury or blood loss, helping to quickly raise the circulating platelet count. The liver isn’t the storage site (it’s more involved in producing thrombopoietin and other functions), and bone marrow is where platelets are produced rather than stored. Blood plasma is the liquid component they travel in, not a storage site.