Level of structural organization of human body

Level of structural organization of human body:- The structure of the human body are organized of different levels that include chemical level, molecular level, cellular level, tissue level, system level and Organism level.

Level of structural organization of human body
Level of structural organization of human body

The chemical level includes atoms of the chemical elements such as carbon, oxygen, nitrogen, calcium, hydrogen, sodium, potassium, magnesium and iron.

  • Molecular level

The two or more chemical elements join to form the molecules such as proteins, DNA, RNA, glucose and ATP.

  • Cellular level

The cells are the smallest living units of life. They are the smallest structural & functional, units of the human body containing specialized internal structures called organelles.

  • Tissue level

The cells are grouped to form tissue that work together to perform any particular function. They are epithelial tissue, connective tissue, muscle tissue and nervous tissue.

  • Organ level

The tissue are grouped together to form organs. An organ perform a particular function & is composed of two or more different types of tissue: eg- Stomach.

  • Organ system level

The organ system consists of related organs that have a common function, e.g., digestive system, respiratory system, skeletal system.

  • Organism level

The organism level is the highest level of organization. It is formed of all of the system of body that work together to make a functional organism, the human body.