A body system consists of a group of organs that form different systems as:
1. The musculoskeletal system - composed of the skeletal system and the muscle
system. It provides a framework for the body and protects vital organs. The purpose of
this system is a movement caused by contraction and extension of muscles.
2. The circulatory system - it is the heart and a network of blood vessels: arteries,
capillaries and veins.
3. The digestive system – the mouth, oropharynx, oesophagus, stomach, small intestine,
large intestine and the anus.
4. The respiratory system – the nose, nasopharynx, trachea, bronchi and the lungs.
5. The urinary system – the kidneys, ureters, bladder and the urethra.
6. The nervous system – the brain, spinal cord, peripheral nerves, autonomic nerves.
7. The endocrine system – it consists of seven glands and its function is to produce
hormones.
8. The reproductive system is divided into the male’s and the female’s systems. The
male’s reproductive system consists of the testes, epididymis, seminal ves