Question

question
which of the following statements regarding platelets is/are true?
answer
platelets are continually replaced, and an individual platelet circulates for 10 - 12 days before being removed by phagocytes.
a microliter of circulating blood contains an average of 10,000 platelets.
all of the listed responses are true.
about one - half of the platelets in the body, at any moment, are held in the spleen and other vascular organs.
i dont know yet

Explanation:

• Platelets have a lifespan of 10 - 12 days and are continuously replaced, with old ones removed by phagocytes.
• A microliter of blood contains about 150,000 - 400,000 platelets, not 10,000.
• Approximately half of the platelets are stored in the spleen and other vascular organs.

Answer:

About one - half of the platelets in the body, at any moment, are held in the spleen and other vascular organs.