Question: Which Organ Is Most Important?

Is brain more important than heart?

Many people would probably think it’s the heart, however, it’s the brain.

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..

What organs can we live without?

Here are some of the “non-vital organs”.Spleen. This organ sits on the left side of the abdomen, towards the back under the ribs. … Stomach. … Reproductive organs. … Colon. … Gallbladder. … Appendix. … Kidneys.

Which body part is only found on humans?

Found only in humans, the hyoid bone is the only bone in the body that is not connected to any other, and is the foundation of speech. This horseshoe-shaped bone in the throat is situated between the chin and the thyroid cartilage.

What are the 5 most important organs in the human body?

Humans have five vital organs that are essential for survival. These are the brain, heart, kidneys, liver and lungs. The human brain is the body’s control center, receiving and sending signals to other organs through the nervous system and through secreted hormones.

What is the most useless organ?

appendixThe appendix may be the most commonly known useless organ. While plant-eating vertebrates still rely on their appendix to help process plants, the organ is not part of the human digestive system.

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 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 is the least important part of your body?

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 most powerful organ in the body?

The brainThe brain is arguably the most powerful organ in the human body. After all, it’s responsible for everything from the way you move to what you think.

What’s inside a human body?

The most basic unit is the cell; groups of similar cells form tissues; groups of different tissues make up organs; groups of organs form organ systems; cells, tissues, organs, and organ systems combine to form a multicellular organism.

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…

What is the most important function of the human body?

Body functions are the physiological or psychological functions of body systems. The body’s functions are ultimately its cells’ functions. Survival is the body’s most important business.

What are the 7 functions of life?

Seven Functions of Living ThingsMovement. Living things have the ability to move in some way without outside help. … Sensitivity. Living things respond to conditions around them. … Respiration. … Nutrition. … Growth. … Reproduction. … Excretion.

What are the two most important organs in the human body?

Vital organsBrain. The brain is the body’s control center. … Liver. The liver is the most important organ of the metabolic system. … Kidneys. The kidneys are a pair of bean shaped organs, and each is about the size of a fist.

Why is the heart the most important organ?

The heart is one of the body’s most essential organs. It keeps the body freshly supplied with oxygen and nutrients, while clearing away harmful waste matter.

What body part can you not live without?

You can still have a fairly normal life without one of your lungs, a kidney, your spleen, appendix, gall bladder, adenoids, tonsils, plus some of your lymph nodes, the fibula bones from each leg and six of your ribs.

What are the 11 systems in the human body?

The 11 organ systems include the integumentary system, skeletal system, muscular system, lymphatic system, respiratory system, digestive system, nervous system, endocrine system, cardiovascular system, urinary system, and reproductive systems.

Can you live without your heart?

A device called the Total Artificial Heart helps some of the sickest heart-failure patients regain function — outside of the hospital — while awaiting a transplant.