Systems of the human body efficiently control all the functions of organs arranged in a system of the human body.

The human body is made up of complex systems that work together to ensure the efficient functioning of various organs. These systems are responsible for controlling and regulating a wide range of bodily functions.

Each system is a group of organs that perform specific functions and work in harmony with other systems. Thus maintain the overall health and well-being of the body. The intricate interplay between these systems is what enables the human body to carry out its various tasks. They are also intricate and adapt to changing conditions.

Overall these systems are supremely organised and can maintain normal function even under the most adverse conditions. For example, body temperature remains constant even though swimming in cold water and immediately afterwards lie in hot sunshine.

Major systems of the human body

On this page, I will provide brief information on the major systems of the human body. I’m going to share detailed information on each system in my next pages. Hence keep on visiting the health category of the Information Site. You can also subscribe to receive the published posts on your email address.

The major systems of the human body are as follows:

1 Nervous System

It governs the activities of the various organs. Through this system, the individual is made aware of the environment and enabled to make responses accordingly.

The nervous system is divided into two major parts

Central nervous system: It governs activities of the brain and spinal cord.

Peripheral nervous system: It governs the activities of nerves spread in the entire human body. Nerves are in branches from the spinal cord to every part of the body.

2 Circulatory System

It circulates and transports food, oxygen and water from one part to another. Four major organs of the circulatory system are the heart, arteries, veins and capillaries. The major components of the circulatory system are blood and plasma.

3 Respiratory System

This system performs the process of taking oxygen into the body and removing excess carbon dioxide.

The major organs of the respiratory system are the nasal cavity, larynx, pharynx, trachea and lungs.

4 Musculoskeletal System

It provides a moveable framework. It is to support and protect the softer tissues. This system enables the movement of the limbs and the body from place to place.

The major organs of the musculoskeletal system are muscles, bones and joints. Along with this cartilage, tendons, ligaments and connective tissues are also major parts of the musculoskeletal system.

5 Digestive System

The digestive system consists of the alimentary canal and its associated glands and organs. The major organs of the digestive system are the mouth, oesophagus, stomach, pancreas, liver, small intestine, large intestine and anus.

The purpose of the digestive system is to digest food by breaking it down into simple useful nutrients. These simple nutrients are carbohydrates, fats and protein. When the nutrients are absorbed into the blood they provide energy. It is also useful for the growth of the human body and the repairing of the organs. These nutrients are essential for the human body.

6 Urinary System

The urinary system deals with the excretion of water-soluble waste products. This system also maintains water and electrolyte balance.

The major organs of the urinary system are the kidneys, ureters, urinary bladder and urethra.

The function of the kidneys is to filter blood and remove waste products. Ureters are the two ducts that pass waste products from the kidneys to the urinary bladder. Stored urine in the urinary bladder is excreted through the urethra.

7 Endocrine System

It comprises the ductless glands that elaborate complex chemical substances i.e. hormones. These hormones pass directly into the bloodstream. Many different processes are been affected by these hormones.

Some of the processes that are affected by these hormones are:

a) Growth and development

b) Metabolism

c) Food metabolism

d) Controlling thirst and hunger

e) Maintaining body temperature

f) Regulating mood and cognitive functions

g) Initiating and maintaining sexual development and reproduction

h) Influencing the way the body uses and stores energy

I) Controlling the volume of fluid and the levels of salts and sugar (glucose) in the blood

j) Blood sugar and blood pressure

k) Sleep cycles and sleep quality

8 Reproductive System

The reproductive system is a collection of internal and external organs in both males and females that work together for procreation. Males and females produce spermatozoa and ova respectively. The female body implants the fertilized ova to nurture the embryo until it can survive independently.

The major organs of the female reproductive system are vagina, cervix, uterus, fallopian tube and ovary.

Penis, testicles, ejaculatory ducts, vas deferens and urethra are the major organs of the male reproductive system.