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 Heart2h 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

17. The Blood

Introduction To Blood

Anatomy & Physiology

17. The Blood

Introduction To Blood

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Multiple Choice

Mature red blood cells in the circulating blood are filled primarily with __________.

nuclei

lysosomes

smooth endoplasmic reticulum

mitochondria

hemoglobin molecules

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Verified step by step guidance

Understand the function of mature red blood cells: They are primarily responsible for transporting oxygen from the lungs to the tissues and carbon dioxide from the tissues back to the lungs.

Recognize that mature red blood cells, also known as erythrocytes, lack a nucleus and most organelles, including mitochondria, lysosomes, and smooth endoplasmic reticulum, to maximize space for hemoglobin.

Identify the key component of red blood cells: Hemoglobin is the protein that binds oxygen and carbon dioxide, facilitating their transport in the blood.

Consider the structure of hemoglobin: It is composed of four polypeptide chains, each containing an iron atom that binds oxygen.

Conclude that mature red blood cells are filled primarily with hemoglobin molecules, which are essential for their oxygen-carrying function.