Human body is made up of different external and internal organs.
Head is the region where the brain is located.It is protected by cranium.The brain controls all the functions of the body.The various human external body parts are elbow, knee, finger, nose, lips , foot, ears, hips, chin, shoulder.
The internal body parts are grouped into different systems.They are digestive system,Nervous system,respiratory system,excretory system,reproductive system, circulatory system, skeletal system,Muscular system etc.
Digestive system: It includes mouth,esophagus,stomach,small intestine,large intestine,rectum and anus. It supplies food to various parts of the body.
Nervous system:It consists of the brain and the spinal cord which control and coordinates the various body parts.
Respiratory system: It includes the nose, pharynx, trachea, bronchi, bronchioles and the lungs. It helps to supply oxygen and remove CO2 which is formed as a waste product.
Excretory system: it consists of a pair of kidneys, ureter, urinary bladder and urethra. They remove the waste materials from the body and maintain the proper ionic balance.
Reproductive system: They are of two types-Male and female.
Male reproductive system includes a pair of testes, vas deferens, prostate gland, urethra, penis etc.
Female reproductive system includes a pair of ovary, oviduct, uterus, cervix and vagina. They help in the production of young ones.
Circulatory system; It includes the heart, and the blood vessels. If helps in the transport of gases and supply nutrients to various parts of the body.
Skeletal system: It forms the frame work of the body and protects the internal organs
Muscular system: It is made up of muscles and they get attached to the bones and help in locomotion.