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

2. Cell Chemistry & Cell Components

Introduction to Eukaryotic Organelles

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Introduction to Eukaryotic Organelles

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Multiple Choice

Intercalated discs and striations are characteristic of which type of muscle tissue?

Cardiac muscle

Smooth muscle

Epithelial tissue

Skeletal muscle

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Verified step by step guidance

Step 1: Begin by understanding the structural and functional characteristics of the muscle tissues mentioned in the options: cardiac muscle, smooth muscle, and skeletal muscle. Epithelial tissue is not a muscle tissue, so it can be excluded from consideration.

Step 2: Recall that intercalated discs are specialized connections between cardiac muscle cells. These discs contain gap junctions and desmosomes, which allow for synchronized contraction and communication between cells.

Step 3: Understand that striations are alternating light and dark bands visible under a microscope, caused by the arrangement of actin and myosin filaments. Striations are present in both cardiac and skeletal muscle but absent in smooth muscle.

Step 4: Compare the options: Smooth muscle lacks both striations and intercalated discs, skeletal muscle has striations but no intercalated discs, and cardiac muscle has both striations and intercalated discs.

Step 5: Based on the presence of both intercalated discs and striations, identify cardiac muscle as the correct answer.