• Register

Which elements make up the human body?

0 votes
45 views
asked Jan 5, 2016 in Science and Nature by tobylee
Share This Q&A

1 Answer

0 votes

The human body is primarily composed of 11 elements. The following list contains the names of these elements along with the percentage of total body weight that they account for: [1]

 

  • Oxygen - 65%
  • Carbon - 18.5%
  • Hydrogen - 9.5%
  • Nitrogen - 3.2%
  • Calcium - 1.5%
  • Phosphorus - 1.0%
  • Potassium - 0.4%
  • Sodium - 0.2%
  • Chlorine - 0.2%
  • Magnesium - 0.1%
  • Sulfur - 0.04%

 

As you can see, these 11 elements make up more than 99% of the mass of the human body. [2] In fact, the top four elements alone, oxygen, carbon, hydrogen and nitrogen make up a staggering 96.2%. Apart from these 11 major elements, there are a number of other trace elements in the human body, each of which accounts for less than 0.01% of the total body weight. They include the following: [1]

 

  • Boron
  • Chromium
  • Cobalt
  • Copper
  • Fluorine
  • Iodine
  • Iron
  • Manganese
  • Molybdenum
  • Selenium
  • Silicon
  • Tin
  • Vanadium
  • Zinc

 

This video does a great job of explaining the composition of the human body in a way that is as entertaining as it is educational:

 

 

References:

1. https://askabiologist.asu.edu/content/atoms-life
2. https://en.wikipedia.org/wiki/Composition_of_the_human_body

answered Jan 5, 2016 by blueskies (57,070 points)

Copyright © 2015 AnswerThis.co    

Legal: Privacy Policy | Terms of Service | Cookies Policy | Anti SPAM Policy | Copyright Notice

 

...