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 arm muscle is characterized by having two divisions or heads?

Biceps brachii

Brachialis

Deltoid

Triceps brachii

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Verified step by step guidance

Step 1: Understand the term 'divisions or heads' in the context of muscle anatomy. Muscles with multiple heads have separate points of origin that converge into a single insertion point.

Step 2: Review the anatomy of the listed muscles. The biceps brachii is known for having two heads: the long head and the short head, which originate from different points on the scapula and insert on the radius.

Step 3: Compare the biceps brachii to the other options. The brachialis is a single-headed muscle located beneath the biceps brachii, the deltoid is a triangular muscle with three distinct regions (not heads), and the triceps brachii has three heads (long, lateral, and medial).

Step 4: Focus on the biceps brachii, which is specifically characterized by having two heads, making it the correct answer to the question.

Step 5: Conclude that the biceps brachii is the arm muscle characterized by having two divisions or heads, based on its anatomical structure and function.