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

In eukaryotic cells, what are the extracellular fluid-filled extensions of the lacunae called?

Cisternae

Cristae

Villi

Canaliculi

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Verified step by step guidance

Step 1: Begin by understanding the anatomy of eukaryotic cells, specifically focusing on structures related to bone tissue. Lacunae are small spaces within the bone matrix that house osteocytes (bone cells).

Step 2: Recognize that extracellular fluid-filled extensions of lacunae are part of the communication network within bone tissue, allowing nutrients and waste to be exchanged between osteocytes and the blood supply.

Step 3: Review the term 'canaliculi,' which refers to the tiny channels or ducts that connect lacunae to each other and to the central canal. These structures facilitate the movement of extracellular fluid and communication between osteocytes.

Step 4: Compare canaliculi with other terms provided in the question: 'Cisternae' are flattened membrane-bound sacs found in the endoplasmic reticulum and Golgi apparatus, 'Cristae' are folds in the inner membrane of mitochondria, and 'Villi' are finger-like projections found in the small intestine to increase surface area for absorption.

Step 5: Conclude that the correct answer is 'Canaliculi,' as they are the extracellular fluid-filled extensions of lacunae in bone tissue, distinct from the other terms listed.