Levels of Structural Complexity

Tahlia Smith
Flashcards by Tahlia Smith, updated more than 1 year ago
Tahlia Smith
Created by Tahlia Smith over 5 years ago
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The 6 levels of structural complexity
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Question Answer
1. CHEMICAL - atoms combine to form molecules
2. CELLULAR LEVEL - molecules combine to form cells - cells are the smallest living units of body (trillions of cells)
3. TISSUE LEVEL - group of cells that works together to perform a common function - 4 tissue types: *Epithelial *Connective * Muscle * Nervous
4. ORGAN LEVEL - made up of more than one tissue (discrete structure) - the structure of an organ is arranged so it can perform a certain unique function - e.g. liver, heart, brain
5. ORGAN SYSTEM LEVEL - a group of organs that work together to perform a certain function - e.g. cardiovascular system
6. ORGANISM - organ systems put together to make a living organism
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