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1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

1. Introduction to Anatomy & Physiology

Levels of Organization

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Levels of Organization

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Multiple Choice

Which of the following is the correct order of organizational levels in the human body from simplest to most complex?

Cell, Tissue, Organ, Organ System, Organism

Organ System, Organ, Tissue, Cell, Organism

Tissue, Cell, Organ, Organ System, Organism

Organism, Organ System, Organ, Tissue, Cell

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Verified step by step guidance

Understand the concept of biological organization: Biological organization refers to the hierarchy of complex biological structures and systems that define life using a reductionistic approach.

Identify the simplest level: The simplest level of organization in the human body is the 'Cell'. Cells are the basic structural and functional units of life.

Recognize the next level: Groups of similar cells that perform a specific function form 'Tissues'.

Determine the subsequent level: Different tissues combine to form 'Organs', which perform specific functions within the body.

Identify the most complex levels: Organs work together as part of an 'Organ System', and multiple organ systems function together to form an 'Organism', which is the most complex level.