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

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

In eukaryotic muscle cells, the transverse tubules (T-tubules) are located between which structures called cisternae?

Nuclear envelope

Mitochondrial cristae

Golgi cisternae

Terminal cisternae of the sarcoplasmic reticulum

Previous problemNext problem

Verified step by step guidance

Understand the anatomy of a muscle cell: Muscle cells, also known as muscle fibers, are specialized eukaryotic cells that contain structures like the sarcoplasmic reticulum, transverse tubules (T-tubules), and terminal cisternae. These structures work together to facilitate muscle contraction.

Learn the role of T-tubules: T-tubules are invaginations of the sarcolemma (the cell membrane of muscle cells) that penetrate into the cell's interior. They help propagate action potentials deep into the muscle fiber, ensuring uniform contraction.

Understand the sarcoplasmic reticulum: The sarcoplasmic reticulum is a specialized form of endoplasmic reticulum in muscle cells. It stores calcium ions, which are essential for muscle contraction. The terminal cisternae are enlarged areas of the sarcoplasmic reticulum that are located near the T-tubules.

Recognize the relationship between T-tubules and terminal cisternae: T-tubules are situated between two terminal cisternae, forming a structure known as a triad. This triad is critical for the excitation-contraction coupling process, where electrical signals trigger calcium release for muscle contraction.

Conclude the correct answer: Based on the anatomy and function of muscle cells, the transverse tubules (T-tubules) are located between the terminal cisternae of the sarcoplasmic reticulum, not the nuclear envelope, mitochondrial cristae, or Golgi cisternae.