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

19. The Blood Vessels

Veins

Anatomy & Physiology

19. The Blood Vessels

Veins

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Problem 15

Textbook Question

The vein that drains the dural sinuses of the brain is the
(a) Cephalic vein
(b) Great saphenous vein
(c) Internal jugular vein
(d) Superior vena cava

Verified step by step guidance

Step 1: Understand the anatomy of the dural sinuses. The dural sinuses are venous channels located within the dura mater of the brain. They collect blood from the brain and direct it toward the larger veins for systemic circulation.

Step 2: Review the function of the internal jugular vein. The internal jugular vein is a major vein that drains blood from the brain, face, and neck. It is directly connected to the dural sinuses, making it the primary vein responsible for draining blood from these structures.

Step 3: Eliminate incorrect options. The cephalic vein (option a) is located in the arm and is unrelated to brain drainage. The great saphenous vein (option b) is the longest vein in the leg and also unrelated to brain drainage. The superior vena cava (option d) collects blood from the upper body but does not directly drain the dural sinuses.

Step 4: Confirm the correct answer. Based on anatomical connections, the internal jugular vein (option c) is the vein that drains the dural sinuses of the brain.

Step 5: Conclude that understanding the venous system and its connections is essential for identifying the correct vein responsible for draining specific regions of the body.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Dural Sinuses

Dural sinuses are large venous channels located between the layers of the dura mater in the brain. They collect deoxygenated blood from the brain and drain it into the internal jugular vein. Understanding their function is crucial for comprehending how blood is returned from the brain to the heart.

Internal Jugular Vein

The internal jugular vein is a major blood vessel that drains blood from the brain, face, and neck. It runs alongside the carotid artery and is responsible for carrying blood from the dural sinuses back to the heart. Recognizing its role is essential for answering questions related to cerebral venous drainage.

Venous Drainage

Venous drainage refers to the process by which deoxygenated blood is returned to the heart from various parts of the body. In the context of the brain, it involves the collection of blood from the brain's venous structures and its transport through specific veins, such as the internal jugular vein, to the heart. This concept is fundamental for understanding the circulatory system's function.