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

4. Tissues & Histology

Introduction to Tissues & Histology

Anatomy & Physiology

4. Tissues & Histology

Introduction to Tissues & Histology

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 correctly lists the layers of the stomach wall from innermost to outermost?

Mucosa, muscularis externa, submucosa, serosa

Submucosa, mucosa, muscularis externa, serosa

Serosa, muscularis externa, submucosa, mucosa

Mucosa, submucosa, muscularis externa, serosa

Previous problemNext problem

Verified step by step guidance

Step 1: Understand the structure of the stomach wall. The stomach wall is composed of four main layers, each with distinct functions and characteristics. These layers are organized from the innermost layer (closest to the lumen) to the outermost layer (facing the abdominal cavity).

Step 2: Identify the innermost layer. The mucosa is the innermost layer of the stomach wall. It contains epithelial cells, connective tissue, and a thin layer of smooth muscle. Its primary function is secretion (e.g., mucus, digestive enzymes) and absorption.

Step 3: Recognize the second layer. The submucosa lies directly beneath the mucosa. It is composed of connective tissue and contains blood vessels, lymphatics, and nerves that support the mucosa.

Step 4: Understand the third layer. The muscularis externa is the third layer, responsible for the stomach's movements, such as churning and mixing food. It consists of three layers of smooth muscle: an inner oblique layer, a middle circular layer, and an outer longitudinal layer.

Step 5: Identify the outermost layer. The serosa is the outermost layer of the stomach wall. It is a thin layer of connective tissue covered by a layer of simple squamous epithelium, which forms part of the peritoneum and provides protection and structural support.