Quick Answer: What Are The 11 Organs Of The Body?

What is the hardest substance in the human body?


Tooth enamel is the hardest substance in the body.

The shiny, white enamel that covers your teeth is even stronger than bone.

This resilient surface is 96 percent mineral, the highest percentage of any tissue in your body – making it durable and damage-resistant..

Are bones organs?

Bones are organs; although they consist primarily of osseous tissue, bones have a vast supply of nervous tissue in their nerves, fibrous tissue lining their cavities, and muscle and epithelial tissue in their blood vessels.

What are the 5 main organs of the 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 largest organ in the body?

Skin is the human body’s largest organ. Body organs aren’t all internal like the brain or the heart. There’s one we wear on the outside. Skin is our largest organ—adults carry some 8 pounds (3.6 kilograms) and 22 square feet (2 square meters) of it.

What are the major organs of the body?

Some of the easily recognisable internal organs and their associated functions are:The brain. The brain is the control centre of the nervous system and is located within the skull. … The lungs. … The liver. … The bladder. … The kidneys. … The heart. … The stomach. … The intestines.

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 is the smallest organ?

What’s the smallest organ in the human body? You’ll find the pineal gland near the center of the brain, in a groove between the hemispheres.

What are the 11 major organ systems and their main functions?

Understanding the 11 Body Organ SystemsCirculatory.Lymphatic.Respiratory.Integumentary.Endocrine.Gastrointestinal.Urinary.Musculoskeletal.More items…

What are the 78 organs in the human body?

Among these 78 organs, five organs are considered as vital for survival. These include the heart, brain, kidneys, liver and lungs….Types of Organs in a Human Body.Adrenal GlandsBladderHeartKidneysPancreasPharynxThymus GlandTongueTestesSeminal vesicles13 more columns

What is the most important part of the body?

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.

What organ system is the skin in?

integumentary systemThe skin is the largest organ of the body. The skin and its derivatives (hair, nails, sweat and oil glands) make up the integumentary system. One of the main functions of the skin is protection.

Is blood an organ?

Blood is both a tissue and a fluid. It is a tissue because it is a collection of similar specialized cells that serve particular functions. These cells are suspended in a liquid matrix (plasma), which makes the blood a fluid.

What organs are on the right side of the human body?

The heart and spleen normally reside on the left side and the liver and gallbladder are on the right. Furthermore, the organs themselves are asymmetrical. Understanding how genes control the shape and spatial orientation of organs is one of the goals of developmental biologists.

What are the 12 organs of the human 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 are the 13 systems in the human body?

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 system in our body?

nervous systemWhile 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 is the strongest muscle in the human body?

masseterThe strongest muscle based on its weight is the masseter. With all muscles of the jaw working together it can close the teeth with a force as great as 55 pounds (25 kilograms) on the incisors or 200 pounds (90.7 kilograms) on the molars.