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

Which organelle is primarily associated with forming channels along the T-tubules in muscle cells to facilitate the transmission of action potentials?

Lysosomes

Sarcoplasmic reticulum

Golgi apparatus

Mitochondria

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Verified step by step guidance

Step 1: Understand the role of T-tubules in muscle cells. T-tubules (transverse tubules) are invaginations of the sarcolemma (muscle cell membrane) that help transmit action potentials deep into the muscle fiber.

Step 2: Recognize the function of the sarcoplasmic reticulum (SR). The SR is a specialized organelle in muscle cells responsible for storing and releasing calcium ions, which are essential for muscle contraction.

Step 3: Learn how the sarcoplasmic reticulum interacts with T-tubules. The SR forms terminal cisternae that are closely associated with T-tubules, creating a structure called a triad. This arrangement facilitates the transmission of action potentials from the T-tubules to the SR, triggering calcium release.

Step 4: Eliminate the incorrect options. Lysosomes are involved in cellular digestion, Golgi apparatus is responsible for protein modification and transport, and mitochondria generate ATP. None of these organelles are directly involved in forming channels along T-tubules or transmitting action potentials.

Step 5: Conclude that the sarcoplasmic reticulum is the organelle primarily associated with forming channels along the T-tubules to facilitate the transmission of action potentials in muscle cells.