As a living machine, the human body is composed of organ systems that function in concert to create and maintain life. While studying cells and molecules, we can become bogged down in the details and lose track of what’s important. Taking a step back and looking at the larger anatomical picture can be useful.

As you study more about the human body’s systems, this page will serve as a foundation from which to learn about each of its components.What Are the 7 Organ Systems of the Human Body?Here are 7 essential organ systems that help the human body sustain:

  Digestive System

• The human digestive system is a complicated system that breaks down huge organic masses into smaller particles that the body uses as a source of energy. To break down nutrition, several enzymes from different cells in the mouth, intestines, stomach, and liver must work together. 
• The mouth, oesophagus, small intestine, stomach, small intestine, and large intestine are all parts of the digestive system. In the digestive system, the salivary glands, liver, and pancreas are all included.Respiratory System

• Respiration happens when food is digested and released into the atmosphere. Oxygen is taken in by the cells, food is burned to release energy, and waste products such as carbon dioxide and water are expelled from the body.  Oxygen and food are the building blocks of life. 
• The body’s cells perform the respiratory process of releasing energy. It is also vital to life since respiration supplies the energy needed to carry out all the processes that keep organisms healthy.

• Circulatory System

• The ‘Blood Circulatory System’ is the primary means of transport in humans. The circulatory system is also called the Double Circulatory System since blood goes through the heart twice. 
• The right and left sides of the heart form the system’s central hub. Arteries, veins, and capillaries are the three types of blood vessels that transport blood.

1. Nervous System

• Control and coordination in humans included occurring through both the nervous system and the endocrine system, which is a type of hormonal system.
• Organised by nerve cells, the Nervous System is responsible for keeping our bodies in sync. Because of this, it aids our bodies in working together. In the neurological system, the brain, spinal cord, and nerves make up the most important organs. 
• The brain and spinal cord are linked to every part of our body by a network of nerves that number in the billions.

1. Urinary System

• The urinary system or excretory system is responsible for excreting waste from the human body. The following elements make up the whole: There are two bean-shaped kidneys, one on each side of the diaphragm, one urine bladder, two ureters, and a muscular tube called the urethra that comes from the bladder. 
• The urethra’s urethral aperture is located at the distal end. Two further processes of excretion include filtration and reabsorption. It is also important to note that in addition to removing nitrogenous waste, kidneys also regulate water levels in the body and maintain a normal blood mineral balance (osmoregulation). The kidney’s nephrons are the kidney’s structural and functional units.

1. Reproductive System

• Organisms with the same basic traits as their parents are born as a result of the process of reproduction. Reproduction in living creatures is divided into two categories: Asexual and Sexual. 
• Asexual Reproduction is when an organism produces a new organism without the need for sex cells or gametes in asexual reproduction. Binary fission in Amoeba, budding in Hydra, and so on are examples of asexual reproduction.
• On the other hand, sexual reproduction is the creation of a new organism from the sex cells or gametes of two parents Males and females are the biological parents who are involved in the process of sexual reproduction.

1. Skeletal System

• The Skeletal System is the human body’s bone system. The human body consists of 206 bones. Cartilage and ligaments are also part of the skeleton, which is composed of bones and other hard tissue.
• To allow for easy joint movement, cartilage is a dense connective tissue composed of strong protein fibres. Fibrous connective tissue called a ligament attaches bones and holds them firmly in place. However, human skeleton joints are critical because they allow the human skeleton to move.

Conclusion

An organ is a collection of tissues that work together to execute a certain function, and an organ system is a collection of organs that work together to accomplish that specific function. In total, there are seven organ systems in the human body. They are Digestive System, Respiratory System, Circulatory System, Nervous System, Urinary System, Reproductive System, and Skeletal System.