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Hierarchy = organizational structure where most important things are at top and least complex are at bottom.
The organizational hierarchy in animals is:
Cell → Tissue → Organ → Organ system → Organism
Use abbreviation: CTOOsO
Organism living thing. They're component of biotic (living) environment.
Organ systems contain 1 or more organs and other structures working together to perform vital life function.
Ex: of organ systems: digestive, reproduction, and respiratory systems.
An organ is made of two or more types of tissue working together to perform complex life function.
Ex of organs: heart, lungs, and stomach.
Organisms perform a wide variety of functions which include:
Organisms perform a wide variety of functions which include:
Respiration
Regulation/Control
Reproduction
Excretion
Growth
Nutrition
Transport
Organ System
Organ System
Muscular, Skeletal, Integumentary, Reproductive, Nervous, Respiratory, Digestive, Lymphatic, Circulatory, Endocrine, Urinary.
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