What Is The Most Important System In Your Body?

What is the most important organ of the body?

Anatomy & Function The brain is arguably the most important organ in the human body.

It controls and coordinates actions and reactions, allows us to think and feel, and enables us to have memories and feelings—all the things that make us human..

Why is the nervous system the most important system in our body?

The nervous system plays a role in nearly every aspect of our health and well-being. It guides everyday activities such as waking up; automatic activities such as breathing; and complex processes such as thinking, reading, remembering, and feeling emotions. The nervous system controls: Brain growth and development.

What is the most important body system and why?

While your heart is a vital organ, the brain (and the nervous system that attaches to the brain) make up the most critical organ system in the human body. The human nervous system is responsible for coordinating every movement and action your body makes.

What organ does not do anything?

Vestigial organs are parts of the body that once had a function but are now more-or-less useless. Probably the most famous example is the appendix, though it is now an open question whether the appendix is really vestigial.

Can you live without a nervous system?

The Nervous System No one can live without a brain. The brain controls almost everything that happens in your body. Because it is so crucial to our survival, it is not surprising, then, that the brain is protected inside a very hard skull.

What is the most important nervous system?

The nervous system consists of the brain, spinal cord and nerves, this is the most vital system of your body.

What are the 3 most important body systems?

The main systems of the human body are:Circulatory system / Cardiovascular system: … Digestive system and Excretory system: … Endocrine system: … Integumentary system / Exocrine system: … Immune system and lymphatic system: … Muscular system: … Nervous system: … Renal system and Urinary system.More items…

Which body system is the least important?

The appendix is essentially the least important organ. The appendix has the role of releasing healthy bacteria in the large intestine, but it’s still rather useless.

What is the longest thing in your body?

HumansThe longest bone in the human body is the femur.The largest artery is the aorta and the largest vein is the inferior vena cava.The largest internal organ (by mass) is the liver, with an average of 1.6 kilograms (3.5 pounds).The largest external organ, which is also the largest organ in general, is the skin.More items…

What are the 12 organs of the body?

They are the integumentary, skeletal, muscular, nervous, endocrine, cardiovascular, lymphatic, respiratory, digestive, urinary, and reproductive systems. Only the reproductive system varies significantly between males and females.

What is the coolest organ?

Your Liver: Your Coolest Organ.

What is the most important nerve in the human body?

The spinal cord is part of your central nervous system. It begins at the bottom of the brain stem and continues down to your lower back. There are 31 pairs of spinal nerves, and they control sensory, motor, and other functions of your body.