Question

which of the following is a function of blood? select all that apply a defends the body against infections b controls the bodys ph c repairs body tissues

Explanation:

Blood contains white - blood cells that defend against infections. It also contains buffers to control the body's pH. However, blood itself does not directly repair body tissues; cells and growth factors are mainly responsible for tissue repair.

Answer:

A. defends the body against infections
B. controls the body's pH