Composition of the human body - Wikipedia
About 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 .
Human body - Wikipedia
The human body is the entire structure of a human being. It is composed of many different types of cells that together create tissues and subsequently organs and then organ systems. The external human body consists of a head, hair, neck, torso (which includes the thorax and abdomen), genitals, arms, hands, legs, and feet.
Human body | Organs, Systems, Structure, Diagram, & Facts
2024年9月21日 · The human body is the physical substance of the human organism. Characteristic of the vertebrate form, the human body has an internal skeleton with a backbone, and, as with the mammalian form, it has hair and mammary glands. Learn more about the composition, form, and physical adaptations of the human body.
92 Mind-Blowing Human Body Facts | FactRetriever.com
2016年10月24日 · The human body contains over 35 trillion cells. Earth has about 7 billion people, which means that there are 5,000 times more cells in one body than there are people on the planet. [2]
Human body systems: Overview, anatomy, functions | Kenhub
2023年11月3日 · The human body is a biological machine made of body systems; groups of organs that work together to produce and sustain life. Sometimes we get lost while studying about cells and molecules and can’t see the forest for the trees. It can be helpful to step back and look at the bigger anatomical picture.
Human body - Guinness World Records
Human body | Guinness World Records. Home Records Records showcase Human body. APPLY. APPLICATION PROCESS. ICONS. RECORDS SHOWCASE. Human body. From the longest fingernails to the tallest man, check out the incredible people whose unique talents and physical attributes have earned them a Guinness World …
The 11 Organ Systems of the Body and How They Work - Verywell …
2024年9月19日 · There are 11 major organ systems in the human body: The circulatory (cardiovascular) system. The lymphatic system. The respiratory system. The integumentary system. The endocrine system. The gastrointestinal (digestive) system. The urinary (excretory) system. The musculoskeletal system. The nervous system. The reproductive system. The immune system
What Are the Major Organs of the Body? 9 Vital Organs - MedicineNet
The major organs of the body include the heart, brain, lungs, kidneys, liver, skin, bones, adrenal glands, and hematopoietic system. There are about 78 organs in the human body, all of which coordinate with each other to ensure that the body functions properly. While each organ serves a specific function and is important to overall health, some ...
Organs and organ systems in the human body - Medical News Today
2024年1月26日 · The five vital organs in the human body are the brain, heart, lungs, kidneys, and liver. Other organs include the gallbladder, pancreas, and stomach.
Elements in the Human Body and What They Do - ThoughtCo
2024年9月4日 · Most of the body is made up of water (H 2 O) with bone cells comprised of 31% water and the lungs 83%. Therefore, it isn't surprising that most of the human body's mass is oxygen. Carbon, the basic unit for organic molecules, comes in second in terms of mass. Additionally, 96.2% of the human body's mass is made of only four elements: oxygen ...