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

Which of the following is a distinguishing feature of cardiac muscle tissue?

Multinucleated fibers with peripheral nuclei

Presence of intercalated discs

Voluntary control

Lack of striations

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Verified step by step guidance

Step 1: Begin by identifying the unique structural and functional characteristics of cardiac muscle tissue. Cardiac muscle is specialized for continuous, rhythmic contraction to pump blood throughout the body.

Step 2: Compare cardiac muscle tissue to other types of muscle tissue (skeletal and smooth). Skeletal muscle is multinucleated with peripheral nuclei and under voluntary control, while smooth muscle lacks striations and is involuntary.

Step 3: Focus on the distinguishing feature of cardiac muscle tissue: the presence of intercalated discs. These structures are unique to cardiac muscle and facilitate synchronized contraction by allowing electrical and mechanical coupling between cells.

Step 4: Understand the role of intercalated discs. They contain gap junctions and desmosomes, which enable rapid transmission of electrical signals and strong adhesion between cardiac muscle cells.

Step 5: Eliminate the incorrect options based on the characteristics of cardiac muscle tissue. Cardiac muscle is striated, involuntary, and does not have multinucleated fibers with peripheral nuclei. The correct distinguishing feature is the presence of intercalated discs.