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

23. The Digestive System

Introduction to the Digestive System

Anatomy & Physiology

23. The Digestive System

Introduction to the Digestive System

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 structure regulates the exit of partially digested food from the stomach into the small intestine?

Cardiac sphincter

Lower esophageal sphincter

Pyloric sphincter

Ileocecal valve

Previous problemNext problem

Verified step by step guidance

Step 1: Understand the function of the stomach and its role in digestion. The stomach breaks down food mechanically and chemically, creating a semi-liquid substance called chyme.

Step 2: Learn about the pyloric sphincter, a muscular valve located at the junction between the stomach and the duodenum (the first part of the small intestine). Its primary role is to regulate the passage of chyme from the stomach into the small intestine.

Step 3: Compare the pyloric sphincter with other structures mentioned in the problem. For example, the cardiac sphincter (also known as the lower esophageal sphincter) prevents backflow of stomach contents into the esophagus, while the ileocecal valve regulates the flow of material from the small intestine to the large intestine.

Step 4: Recognize that the pyloric sphincter is specifically responsible for controlling the exit of partially digested food from the stomach into the small intestine, making it the correct answer.

Step 5: Review the anatomy and physiology of the digestive system to reinforce understanding of how different sphincters and valves contribute to the movement of food through the gastrointestinal tract.