Levels of Body Organisation

State levels of body organisation

Atoms, molecules, cells, tissue, organ, organ system, organism

Describe molecular level

Includes atoms, molecules and macromolecules (proteins, carbs, lipids, fats and nucleic acid)

Nucleic acid forms DNA

Describe cellular level

Includes cells (basic unit of life, group of atoms, molecules and organelles working together)

Describe tissue level

Tissue = group of similar cells working together to perform a specific task

Name four types of tissue

Epithelial, connective, muscle and neural

Describe why there are different tissue types

Cells are arranged differently and therefore, changes the function of the tissue

Describe organ level

Organ = group of different tissues working together (function depends on the tissues)

Name and describe two types of organs

Multi-tasking organs do more than one function

Specialist organs have one primary function

Describe organ system level

Organ system = group of organs working together

Name 11 human organ systems

Integumentary, skeletal, muscular, nervous, endocrine, respiratory, reproductive, cardiovascular, lymphatic, digestive, urinary

Name 10 general functions of organ systems

Control, thermal regulation, digestion, movement, protection, removal, reproduction, storage, support and transportation

Describe organism level

Collaboration of organ systems to function as a human