Blood. Blood. Blood

a) List the constituents of blood and their purposes.

Plasma : One of the main purposes of plasma is to dissolve the food substances and hormones that the body needs in it. Plasma also suspends the blood cells for easy transportation around the body. Plasma also acts as a reservoir that can either replenish insufficient water or absorb excess water from tissues. Plasma also prevents blood vessels from collapsing and clogging and helps maintain blood pressure and circulation throughout the body simply by filling blood vessels and flowing through them continuously.

Red Blood Cells : Red Blood have some of the most basic purposes of all the blood components. They carry oxygen from the heart to the tissues of the body via the blood stream. They also carry carbon dioxide (Waste) away from the tissues of the body and back to the heart. Red blood cells also contain hemoglobin, which helps it to do this.

White Blood Cells : White Blood cells are primarily responsible for protecting the body against infection. They do this by surrounding the germs and digesting them. White blood cells also produce antibodies that help with its function.

Platelets : Platelets are small particles whose primary function is to help your blood to clot. They gather at the bleeding site and gather over the open blood vessel and they help to seal it.

b) List 5 purposes of the blood.

1. Blood delivers oxygen to cells
2. Blood takes food and essential nutrients around the body.
3. Blood takes waste away from cells, (that’s gotten rid of by the kidneys or lungs)
4. Blood transports heat around the body.
5. Blood helps to fight infections, (by use of components in it)