The palsy of right side of the muscle represented by an arrow causes ?
A. Deviation of tongue to right.
B. Deviation of tongue to left.
C. Deviation of soft palate to right.
D. Deviation of soft palate to left.
Ans;A. Deviation of tongue to right.
The muscle marked by an arrow represents Genioglossus muscle.
- The genioglossus is one of the paired extrinsic muscles of the tongue which is fan-shaped.
- Innervated by the hypoglossal nerve, the genioglossus depresses and protrudes the tongue.
- Peripheral damage to the hypoglossal nerve can result in deviation of the tongue to the damaged side.
- The genioglossus is often used as a proxy to test the function of the hypoglossal nerve, by asking a patient to stick out their tongue.