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

Introduction to Organ Systems

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

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

The digestive system is primarily derived from which embryonic germ layer?

Mesoderm

Periderm

Ectoderm

Endoderm

Previous problemNext problem

Verified step by step guidance

Step 1: Understand the concept of embryonic germ layers. During early embryonic development, three primary germ layers form: ectoderm, mesoderm, and endoderm. Each layer gives rise to specific tissues and organs in the body.

Step 2: Recall the role of the endoderm. The endoderm is the innermost germ layer and is responsible for forming the lining of the digestive tract and associated organs, such as the liver and pancreas.

Step 3: Eliminate incorrect options. The mesoderm forms structures like muscles, bones, and the circulatory system. The ectoderm forms the skin and nervous system. The periderm is not a germ layer and is irrelevant in this context.

Step 4: Connect the digestive system to the endoderm. The digestive system, including the gastrointestinal tract and accessory organs, originates from the endoderm because it forms the epithelial lining of these structures.

Step 5: Conclude that the correct answer is 'Endoderm,' as it is the germ layer responsible for the development of the digestive system.