The main systems of the human body are:
- Cardiovascular system / Circulatory system:
- Circulates blood around the body via the heart, arteries and veins, delivering oxygen and nutrients to organs and cells and carrying their waste products away.
- Digestive system / Excretory system:
- Mechanical and chemical processes that provide nutrients via the mouth, esophagus, stomach and intestines.
- Eliminates waste from the body.
- Endocrine system:
- Provides chemical communications within the body using hormones.
- Integumentary system/ Exocrine system:
- Skin, hair, nails, sweat and other exocrine glands.
- Lymphatic system / Immune system:
- The system comprising a network of lymphatic vessels that carry a clear fluid called lymph.
- Defends the body against pathogenic viruses that may endanger the body .
- Muscular system
- Enables the body to move using muscles.
- Nervous system:
- Collects and processes information from the senses via nerves and the brain and tells the muscles to contract to cause physical actions.
- Renal system / Urinary system:
- The system where the kidneys filter blood.
- Reproductive system:
- The sex organs required for the production of offspring.
- Respiratory system
- The lungs and the trachea that bring air into the body.
- Skeletal system
- Bones supporting the body and its organs.