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

5. Integumentary System

Introduction to the Integumentary System

Anatomy & Physiology

5. Integumentary System

Introduction to the Integumentary System

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Multiple Choice

Which facial muscle is primarily responsible for raising the eyebrows?

Frontalis

Masseter

Zygomaticus major

Orbicularis oculi

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Verified step by step guidance

Step 1: Begin by identifying the primary function of each muscle listed in the options. For example, the frontalis muscle is known for its role in facial expressions, specifically raising the eyebrows.

Step 2: Understand the anatomical location of the frontalis muscle. It is part of the epicranius muscle group and is located on the forehead, directly above the eyebrows.

Step 3: Compare the functions of the other muscles listed. The masseter is involved in mastication (chewing), the zygomaticus major is responsible for smiling by elevating the corners of the mouth, and the orbicularis oculi controls the closing of the eyelids.

Step 4: Eliminate the incorrect options based on their primary functions and anatomical locations. Only the frontalis muscle matches the description of raising the eyebrows.

Step 5: Conclude that the frontalis muscle is the correct answer, as it is specifically responsible for the action of raising the eyebrows.