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

검증된 단계별 안내

Step 1: Understand the anatomy of the dural sinuses. The dural sinuses are venous channels found between layers of the dura mater in the brain, responsible for draining venous blood from the brain tissue.

Step 2: Identify the main vein that receives blood from the dural sinuses. The blood collected in the dural sinuses eventually drains into a large vein that carries it away from the brain toward the heart.

Step 3: Recall the major veins listed in the options and their general functions: (a) Cephalic vein drains the upper limb, (b) Great saphenous vein drains the lower limb, (c) Internal jugular vein drains blood from the brain, and (d) Superior vena cava collects blood from the upper body to the heart.

Step 4: Connect the function of the internal jugular vein to the drainage of the dural sinuses, as it is the primary vein that collects blood from the brain's venous sinuses and channels it toward the heart.

Step 5: Conclude that the vein draining the dural sinuses of the brain is the internal jugular vein, based on its anatomical role and pathway.

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주요 개념

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Dural Sinuses

Dural sinuses are venous channels located between layers of the dura mater in the brain. They collect deoxygenated blood from the brain and cerebrospinal fluid, directing it towards larger veins for drainage. Understanding their anatomy is essential to trace the venous outflow from the brain.

Internal Jugular Vein

The internal jugular vein is a major vein that drains blood from the brain, face, and neck. It receives blood from the dural sinuses and channels it down towards the heart. Recognizing this vein's role is key to identifying the primary drainage pathway of cerebral venous blood.

Venous Drainage Pathways of the Head and Neck

Venous drainage of the head and neck involves a network of veins including the cephalic vein, great saphenous vein, internal jugular vein, and superior vena cava. Knowing which veins are involved in brain drainage helps differentiate their functions and select the correct vein associated with dural sinus drainage.

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