Which Cranial Nerve Is the Only Nerve to Emerge from the Posterior

question 48

Multiple Choice

Which cranial nerve is the only nerve to emerge from the posterior surface of the brainstem?

• A) Trochlear
• B) Abducens
• C) Glossopharyngeal
• D) Hypoglossal

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Definitions:

Fibrinogen

A blood plasma protein that's converted into fibrin in the blood clotting process, playing a critical role in wound healing.

Fibrin

A protein involved in blood clotting, formed from fibrinogen by the action of the enzyme thrombin.

Factor XII

A protein that plays a role in the initiation of the coagulation cascade to form blood clots, also known as Hageman factor.

Intrinsic Pathway

A cascade of clotting factors leading to the formation of a blood clot, activated from within the vessel, without the need for external tissue damage.