The diagram below shows part of the capillary bed in an organ of the human body. Some of the blood arriving at the capillaries at points labelled A, moves out into the spaces between the tissue cells. Study the diagram and answer the question that follow:

Some of the liquid surrounding the cells does not pass directly back into the blood but eventually reaches it by another route through vessel X. Name the fluid present in vessel X.

Name the following:

The process of WBCs squeezing out through the walls of the blood capillaries.

Mention the following:

Blood cells involved in leukaemia.

The diagram below shows part of the capillary bed in an organ of the human body. Some of the blood arriving at the capillaries at points labelled A, moves out into the spaces between the tissue cells. Study the diagram and answer the question that follows:

State two important functions performed in our body by the fluid present in vessel X.