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

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Multiple Choice

Which structure is a hollow muscular sac in the human body?

Urinary bladder

Liver

Heart

Stomach

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Verified step by step guidance

Identify the key characteristics of the structures listed: urinary bladder, liver, heart, and stomach.

Understand that a 'hollow muscular sac' refers to an organ that is both hollow and has muscular walls, allowing it to expand and contract.

Analyze each option: The urinary bladder is a hollow organ that stores urine and has muscular walls to help expel urine. The liver is a solid organ involved in metabolism and detoxification. The heart is a muscular organ that pumps blood but is not hollow in the sense of storing substances. The stomach is a hollow organ that stores and digests food, with muscular walls to aid in digestion.

Compare the characteristics of each structure to the definition of a 'hollow muscular sac'.

Conclude that the urinary bladder and stomach fit the description, but the urinary bladder is more commonly referred to as a 'hollow muscular sac' in the context of storing and expelling substances.