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

17. The Blood

Introduction To Blood

Anatomy & Physiology

17. The Blood

Introduction To Blood

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

Which of the following is false with regard to the blood-brain barrier?

The blood-brain barrier is essential for maintaining the brain's stable environment.

The blood-brain barrier protects the brain from harmful substances in the blood.

The blood-brain barrier allows large molecules to easily pass through.

The blood-brain barrier is formed by tightly joined endothelial cells.

Previous problemNext problem

Verified step by step guidance

Understand the function of the blood-brain barrier: It is a selective permeability barrier that separates the circulating blood from the brain and extracellular fluid in the central nervous system.

Recognize the importance of the blood-brain barrier: It maintains the brain's stable environment by regulating the passage of substances from the bloodstream into the brain.

Identify the protective role of the blood-brain barrier: It prevents harmful substances, such as toxins and pathogens, from entering the brain tissue.

Examine the structure of the blood-brain barrier: It is formed by tightly joined endothelial cells, which restrict the passage of large molecules and ions.

Evaluate the statement about large molecules: The blood-brain barrier does not allow large molecules to easily pass through, which makes the statement 'The blood-brain barrier allows large molecules to easily pass through' false.