What is the fluid portion of blood called?

What is the fluid portion of blood called?

• A. Plasma
• B. Serum
• C. Platelets
• D. Clot

Answer: (A)

Plasma is the liquid part of blood that suspends the cells and carries dissolved substances such as nutrients, hormones, waste products, electrolytes, and the clotting proteins. It makes up about 55% of blood and contains proteins like albumin and fibrinogen that help with transport and maintaining blood volume and osmotic pressure. Serum is the fluid that remains after a blood sample clots; it lacks clotting factors like fibrinogen. Platelets are the cellular fragments that aid clot formation, not the liquid component. A clot is the gel-like mass formed during coagulation, not the fluid itself. Because the question asks for the fluid portion, plasma is the best answer.

Plasma is the liquid part of blood that suspends the cells and carries dissolved substances such as nutrients, hormones, waste products, electrolytes, and the clotting proteins. It makes up about 55% of blood and contains proteins like albumin and fibrinogen that help with transport and maintaining blood volume and osmotic pressure.

Serum is the fluid that remains after a blood sample clots; it lacks clotting factors like fibrinogen. Platelets are the cellular fragments that aid clot formation, not the liquid component. A clot is the gel-like mass formed during coagulation, not the fluid itself. Because the question asks for the fluid portion, plasma is the best answer.