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 thoracic cage consists of the ______.

skull and mandible

clavicle and scapula

pelvic bones and sacrum

ribs, sternum, and thoracic vertebrae

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Verified step by step guidance

Step 1: Begin by understanding the term 'thoracic cage.' The thoracic cage is a bony structure that protects vital organs in the thoracic cavity, such as the heart and lungs, and provides attachment points for muscles involved in respiration and upper limb movement.

Step 2: Recall the anatomical components of the thoracic cage. It is primarily composed of the ribs, sternum, and thoracic vertebrae. These structures work together to form a protective enclosure around the thoracic cavity.

Step 3: Eliminate the incorrect options by analyzing their anatomical relevance. The skull and mandible are part of the axial skeleton but are not involved in forming the thoracic cage. Similarly, the clavicle and scapula are part of the appendicular skeleton and contribute to the shoulder girdle, not the thoracic cage. The pelvic bones and sacrum are part of the pelvic girdle and lower axial skeleton, unrelated to the thoracic cage.

Step 4: Confirm the correct answer by matching the components of the thoracic cage (ribs, sternum, and thoracic vertebrae) with the description provided in the problem. These structures collectively form the protective framework of the thoracic cavity.

Step 5: Reinforce your understanding by visualizing or referencing an anatomical diagram of the thoracic cage. This will help solidify the concept and ensure clarity in identifying its components in future questions.