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

9. Muscle Tissue

Introduction to Muscles and Muscle Tissue

Anatomy & Physiology

9. Muscle Tissue

Introduction to Muscles and Muscle Tissue

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Multiple Choice

Which of the following is the main muscle of the cheek?

Temporalis

Masseter

Buccinator

Orbicularis oculi

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Verified step by step guidance

Step 1: Understand the anatomy of the cheek and its associated muscles. The cheek is primarily involved in facial expressions and functions like chewing and speaking.

Step 2: Review the function of each muscle listed in the options: - Temporalis: A muscle involved in mastication (chewing) that elevates and retracts the mandible. - Masseter: Another mastication muscle that elevates the mandible and is located near the jaw. - Buccinator: A facial muscle located in the cheek, responsible for compressing the cheek and assisting in actions like blowing and chewing. - Orbicularis oculi: A muscle surrounding the eye, responsible for closing the eyelids.

Step 3: Focus on the Buccinator muscle, as it is specifically located in the cheek and plays a key role in compressing the cheek against the teeth, aiding in chewing and controlling food placement.

Step 4: Eliminate the other options based on their primary functions and anatomical locations. Temporalis and Masseter are mastication muscles but are not the main cheek muscle. Orbicularis oculi is related to the eye, not the cheek.

Step 5: Conclude that the Buccinator is the correct answer because it is the main muscle of the cheek, directly involved in its movement and function.