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

The endosteum is found in all of the following places except the __________.

central canals of osteons

medullary cavity of long bones

outer surface of the diaphysis

inner surface of spongy bone

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Verified step by step guidance

Understand the term 'endosteum': The endosteum is a thin layer of connective tissue that lines the inner surfaces of bones, including spaces within the bone such as the medullary cavity, central canals of osteons, and the inner surface of spongy bone. It plays a role in bone growth, repair, and remodeling.

Review the anatomy of the diaphysis: The diaphysis is the shaft or central part of a long bone. Its outer surface is covered by the periosteum, not the endosteum. The periosteum is a dense layer of vascular connective tissue that serves as a protective covering and provides attachment points for tendons and ligaments.

Compare the locations listed in the question: The central canals of osteons, medullary cavity of long bones, and inner surface of spongy bone are all internal structures of the bone where the endosteum is found. The outer surface of the diaphysis, however, is external and covered by the periosteum instead.

Identify the exception: Since the endosteum is not found on the outer surface of the diaphysis, this location is the correct answer to the question.

Summarize the reasoning: The endosteum lines internal bone surfaces, while the periosteum covers external surfaces like the outer surface of the diaphysis. This distinction helps clarify why the outer surface of the diaphysis is the exception.