This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
spinal nerve is related to 
Select and explain. 
A. Glossopharyngeal, B. Vagus, C. Hypoglossal, D. Facial
C: Hypoglossal
Answer: C: Hypoglossal 
Explanation: The anterior primary ramus of C1 joins with hypoglossal nerve, which distributes the motor fibres to the geniohyoid and thyroid muscles. C1 is the first spinal nerve which is unique in that it contains only motor fibres.