Health / Human Body Parts and their functions (Anatomy & Functions)

It consists of number of subsystems to carry out the necessary functions in our daily life.

S. No Type of system Details
1 Circulatory system It consists of the heart, blood, blood vessels, arteries and veins and used to move blood, nutrients, oxygen, carbon dioxide, and hormones around the body.
2 Digestive system It is used to secrete acid and enzymes that digest food. Esophagus end reaches start of stomach through a muscular valve called the lower esophageal sphincter.
3 Endocrine system It is made up of glands that produce hormones which regulate the body's growth, metabolism (the physical and chemical processes of the body, and sexual development and function.), and chemical substances produced in the body that regulate the activity of cells or organs.
4 Immune system It is made up of a network of cells (white blood cells / leukocytes), tissues, and organs that work together to protect the body from disease causing organisms / substances.
5 Lymphatic system It is a network of tissues and organs that help rid the body of toxins, waste and other unwanted materials. It transport a fluid (lymph) containing infection fighting white blood cells throughout the body.
6 Nervous system It consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body. It is responsible for the control of the body and communication among its parts.
7 Muscular system It is used for the movement is the muscular system and to maintain of posture and body position.
8 Reproductive system It allows humans to reproduce. The female reproductive system produce egg cells and protect and nourish the offspring until birth. The male reproductive system is to produce and deposit sperm. Humans have a high level of sexual differentiation.
9 Skeletal system Its functions are to support, movement, protection, blood cell production, calcium storage and endocrine regulation that enable us to survive.
10 Respiratory system The primary organs of the respiratory system are lungs which are responsible for taking in oxygen and expelling carbon dioxide.
11 Urinary system/ renal system It produces, stores and eliminates urine, the fluid waste excreted by the kidneys. The kidneys make urine by filtering wastes and extra water from blood. Urine travels from the kidneys through two thin tubes called ureters and fills the bladder.
12 Skin/integumentary system It consists of the skin, hair, nails, glands, and nerves. Its function is to act as a barrier to protect the body from the outside world. It also functions to retain body fluids, protect against disease, eliminate waste products, and regulate body temperature.

Internal organs and their functions

Human Body consists of internal organs to perform various functions. When 2 or more organs are associated structures work together they become component parts of a body system. These organs differ in size, shape, location and function.

S. No Internal organs Name Details
1 Brain It is used to control the nervous system and located in the skull. It is responsible for our thoughts, feelings, memory storage and general perception of the world.
2 Lungs It is used to provide oxygen from inhaled air to the bloodstream and to exhale carbon dioxide and fills the chest.
3 Liver It detoxifies chemicals and metabolizes drugs. Liver secretes bile that ends up back in the intestines. The liver also makes proteins important for blood clotting and other functions. It breaks down fats, producing urea, filtering harmful substances and maintaining a proper level of glucose in the blood.
4 Bladder It (muscular organ) is used to store (expand) and release urine (contract) and located in pelvic cavity.
5 Kidneys The kidneys are 2 bean shaped organs that excreting waste from blood, balance body fluids, excess fluid in the form of urine.
6 Heart It (hollow shaped, muscular organ) is used to pumps blood through the blood vessels to the entire body.
7 Stomach Its muscles contract regularly to secrete acid and enzymes that digest food. Esophagus end reaches start of stomach through a muscular valve called the lower esophageal sphincter. Stomach secretes acid and enzymes that digest food.
8 Intestines It is located between the stomach and the anus. It is divided into 2 sections. They were
1. Small intestine. (Function is absorb most ingested food)
2. Large intestine. (Function is absorption of water and excretion of solid waste material.)


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