Top 10 Most Important Body Organs

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A human body is like a well oiled machine. The body organs work in perfect synchronisation to keep our life going. They perform their functions, which are perfectly delineated from each other. Be it respiration, blood circulation, reproduction or digestion, the intricate organs of the human body execute all these complex steps with perfection. Thus, understanding the role of each organ and giving attention to their upkeep is imperative to keep them in good condition. Let us now explore ten of the most important organs in the human body.

#10- Reproductive Organs

These organs are instrumental in ensuring the continuity of the human race. If it weren’t for reproductive organs or in case of their malfunction, human beings cannot produce off-springs. In males, the testicles and the male genitalia constitute the reproductive organs and in females, the uterus, ovaries and other associated organs are responsible for reproduction. Sexual intercourse leading to the transfer of sperms manufactured in the male testicles into the body of the female is the first step towards reproduction. Inside the female’s reproductive tract, the sperms and the eggs produced by the female’s ovaries fuse. This is called fertilisation. Fertilisation leads to the development of the embryo within the female’s womb and normal delivery occurs after nine months. This completes the process of reproduction, the process we owe our existence to!

#9- Eyes

Eyes are our window to the world. The beautiful nature, the fun and frolic of the animals and birds, the appetising sight of our near and dear ones- Everything would be a distant proposition without eyes. With such wonderful optical devices gifted by God, we relish the view of our surroundings. But, proportionate to the crucial task of ‘seeing’, which our eyes undertake, they are quite delicate too. The main components of our eye are: a lens( eye lens), a pupil (to direct light onto it) and a retina (to form an image of what an eye actually ‘sees’). Other components like the iris, cornea, etc perform auxiliary functions. An eye is very precious. Utmost care must be taken to keep it in perfect condition. Donating our eyes after death is a noble job indeed!

#8- Pancreas

The Pancreas is a glandular organ which is a part of our digestive system. It is a rich source of various hormones like insulin, glycogen, etc which enter our blood stream and perform vital functions like the regulation of blood glucose levels. The pancreas also secrete pancreatic juice which contains digestive enzymes and help in digestion of food in the small intestine. They help in the absorption of nutrients in the food. All in all, if it weren’t for the pancreas you would not get any energy from the food you eagerly gulp down. Secondly, that food won’t get digested. As simple as that!

#7- The Large Intestine


Food, after getting digested in the small intestine enters the large intestine where water and other necessary components are removed before the waste materials are flushed out from the body through the anus. It takes about 16 hours to digest the food and then pass the useless waste material to the rectum for excretion. If it weren’t for the large intestine, all the digested food would rot in your body without being excreted. No marks for guessing the situation that would follow!

#6- Small Intestine

Here is where all the important digestive action is! The walls of the small intestine provide the surface area for the nutrients and minerals to be absorbed from the food. This absorption process is aided by the pancreatic juice received from the pancreas and the secretions of the liver like the bile juice. The digestive enzymes work on the ingested food in the small intestine and catalyse the digestion process. Food, after being digested in the small intestine is sent to the large intestine for reclaiming the water and excretion. Though the name is ‘small’, yet, the contribution is big!

#5- Kidneys

Simply put, the kidneys serve as the urine factory! They serve as a natural blood filter and several litres of blood are purified by our kidneys everyday in our kidneys through a process called ‘dialysis’. The water soluble wastes in the blood are filtered out into the urine. In producing urine, they also excrete out urea and ammonia and hence, act as our body’s natural cleaning agent. With such crucial functions to perform, a kidney failure, is more often than not, a disaster in the making.

#4- Liver

Liver is the largest gland in the body and the most important one at that! It is a source of bile juice and other digestive enzymes which are central to the digestion process in the small intestine. It also stores excess glucose from the blood stream in the form of ‘glycogen’. It also performs several other functions like the breakdown of hormones like insulin, protein and carbohydrate metabolism( break down), etc. Alcoholics need to worry about their liver as binge drinking can lead to liver damage, cirrhosis and inevitably, death.

#3- Lungs

It can literally be said that we ‘lunge’ on to life through breathing and for this, we need our lungs. They are essentially composed of branched air sacs called as ‘alveoli’, which provide the surface area for gaseous exchange. This gaseous exchange entails the transfer of the inhaled oxygen to the blood for being circulated throughout the body for essential cell functions. Simultaenously, carbon dioxide, which is a by product of cellular respiration, is absorbed from the blood stream and exhaled out as waste. Smoking cigarettes for a long period in one’s life weakens the lung capacity and ultimately leads to diseases like lung cancer, which inevitably prove to be fatal.


The reason why you are able to read and understand this article is because of your brain. The central part of the nervous system, the human brain is a complex organ which handles complex functions. Retention of memory, decision making, control and co-ordination- the brain does them all. Composed mainly of three parts- Cerebrum, Cerebellum and Medulla Oblongata, the functions of different parts of the brain are clearly demarcated from each other. Without your brain, you would be brain-less, literally!

#1- Heart

The MOST important organ in your body, a human heart beats for the entire lifetime. When it stops, well, thats the end of your lifetime. It performs the vital function of pumping blood through your blood circulation system. The average human heart, beating at 72 beats per minute, will beat approximately 2.5 billion times during an average 66 year lifespan, and pumps approximately 4.7-5.7 litres of blood per minute. Can you believe that!

That was your body for you!







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