Almost 99% of the mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Only about 0.85% is composed of another five elements: potassium, sulfur, sodium, chlorine, and magnesium. All 11 are necessary for life.
What are the parts of human body?
- 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 is one function of the human body?
The basic processes of life include organization, metabolism, responsiveness, movements, and reproduction . In humans, who represent the most complex form of life, there are additional requirements such as growth, differentiation, respiration, digestion, and excretion. All of these processes are interrelated.
What are the 12 parts of the body?
These different body systems include the skeletal, nervous, muscular, respiratory, endocrine, immune, cardiovascular/circulatory, urinary, integumentary, reproductive, and digestive systems .
What are the properties of an organ?
Organs (groups of tissues working together) perform specific functions, such as carrying oxygen throughout the body , removing wastes, delivering nutrients to every cell, and cooling the body.
What is called organ?
An organ is a self-contained group of tissues that performs a specific function in the body . The heart, liver, and stomach are examples of organs in humans. The word organ comes from the Latin organum, which means “instrument”. ... Organs are found in most animals and plants.
What defines a human organ?
Organs are the body’s recognizable structures (for example, the heart, lungs, liver, eyes, and stomach) that perform specific functions. An organ is made of several types of tissue and therefore several types of cells.
What body parts do humans not need?
- Spleen. This organ sits on the left side of the abdomen, towards the back under the ribs. ...
- Stomach. ...
- Reproductive organs. ...
- Colon. ...
- Gallbladder. ...
- Appendix. ...
- Kidneys.
What is largest body organ?
The skin is the body’s largest organ.
How many parts of body are there?
According to anatomy studies [50], human body parts can be divided into nine different parts by position: the head, neck, chest, abdomen, pelvis, back, hip, extremity, and trunk. In our ontology, the nine anatomical positions are regarded as the top level.
What are the six functions of human life?
The six human life processes are: growth and development, movement and responding to stimuli, order and organization, reproduction and heredity, energy utilization and homeostasis . These processes may be grouped or labeled differently, depending on the source.
What are the 7 main body systems?
They are Integumentary System, Skeletal System, Muscular System, Nervous System, Endocrine System, Cardiovascular System, Lymphatic System , Respiratory System, Digestive System, Urinary System, and Reproductive System (Female and Male).
What are the 7 functions of life?
- Movement. 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 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 .
Who named our body parts?
When the ancient Greeks were naming body parts, they were probably trying to give them names that were easy to remember, says Mary Fissell, a professor in the Department of the History of Medicine at Johns Hopkins.
What are the 4 major parts of the body?
The basic parts of the human body are the head, neck, torso, arms and legs .
