Components of Blood
Components of Blood
Blood is a vital component of the circulatory system. It is responsible for transporting oxygen and nutrients to the cells, removing waste products, regulating temperature, and fighting disease.
Red Blood Cells
- Red blood cells, also known as erythrocytes, make up most of the cells in our blood.
- Their primary function is to carry oxygen from the lungs to the rest of the body.
- They contain a molecule called haemoglobin which binds with oxygen to form oxyhaemoglobin.
- Red blood cells are disc-shaped to maximise the surface area for oxygen uptake.
White Blood Cells
- White blood cells, or leukocytes, fight infection in the body.
- They contribute to our immune response by attacking and destroying harmful bacteria, viruses, and other foreign substances.
- They exist in smaller quantities than red blood cells, but greatly multiply in number when an infection is detected.
Platelets
- Platelets, or thrombocytes, are fragments of cells involved in blood clotting.
- When a blood vessel is damaged, platelets stick to the damaged area and release chemicals that start the clotting process.
- They are crucial for preventing excessive bleeding following injuries.
Plasma
- Plasma is a pale yellow liquid that makes up about 55% of total blood volume.
- It carries red and white blood cells and platelets through the body.
- Plasma also carries other important substances like hormones, nutrients, gases, and waste products.
- It also helps to regulate body temperature by releasing heat as necessary.
Remember: Each of these components of blood plays a vital role in the function of our circulatory system!