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

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Multiple Choice

Which of the following is not a primary germ layer?

Ectoderm

Epidermis

Endoderm

Mesoderm

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Verified step by step guidance

Understand the concept of primary germ layers: In embryonic development, primary germ layers are the initial layers of cells that form during the early stages of development. These layers are ectoderm, mesoderm, and endoderm.

Identify the primary germ layers: Ectoderm, mesoderm, and endoderm are the three primary germ layers. Each of these layers gives rise to different tissues and organs in the body.

Clarify the term 'epidermis': The epidermis is the outermost layer of skin, which is derived from the ectoderm. It is not a germ layer itself but a structure that develops from the ectoderm.

Distinguish between germ layers and structures derived from them: Germ layers are foundational layers in embryonic development, while structures like the epidermis are formed from these layers.

Conclude which option is not a primary germ layer: Based on the understanding that ectoderm, mesoderm, and endoderm are germ layers, and the epidermis is a structure derived from the ectoderm, the epidermis is not a primary germ layer.