Question

Peter was surprised to learn that, in addition to blood, there's another type of circulating body fluid that flows within separate vessels. what is the name of this circulating fluid that doesn't contain red blood cells?

Answer 1

The circulating body fluid that doesn't contain red blood cells and flows within separate vessels from blood is known as lymph. The lymph and the lymphatic system play a critical role in the immune system and maintain body fluid balance.

Step-by-step explanation:

Peter was surprised to learn that in addition to blood, there is another type of circulating body fluid that flows within separate vessels, and this fluid does not contain red blood cells. This fluid is known as lymph, and it circulates through the lymphatic system.

The lymphatic system is a crucial part of the immune system, patrolling the body for foreign invaders and supporting the body's fluid balance. Unlike blood, which is pumped by the heart through a closed circulatory system, lymph is moved primarily through muscle movement.

Blood itself is composed of different elements, such as red blood cells (erythrocytes), white blood cells (leukocytes), and platelets, all suspended in a fluid called plasma. The plasma also contains dissolved substances and various proteins including antibodies which are vital for immune responses.

Answer 2

The answer is tissue fluid. Tissue fluid holds far smaller quantity of protein molecules because they are too large to escape easily over the tiny holes in the capillary endothelium. Tissue fluid doesn't contain red blood cells because they are too large, but does comprise some white blood cells.