Table of contents

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

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which of the following levels of organization in the human body is the most complex?

Tissue level

Cellular level

Organ level

Organismal level

Previous problemNext problem

Verified step by step guidance

Begin by understanding the hierarchy of structural organization in the human body, which includes: chemical level, cellular level, tissue level, organ level, organ system level, and organismal level.

Recognize that each level builds upon the previous one, increasing in complexity. For example, cells combine to form tissues, tissues combine to form organs, and organs work together in organ systems.

Consider the organismal level, which represents the entire living being. It encompasses all other levels, including multiple organ systems working together to sustain life.

Compare the complexity of the organismal level with the other levels mentioned: tissue, cellular, and organ levels. The organismal level integrates all these components into a functioning whole.

Conclude that the organismal level is the most complex because it includes all other levels and represents the complete living entity, capable of performing all necessary life processes.