Match the cranial nerves with their associated functions by clicking and dragging the nerve next to its correct function.

Match the cranial nerves with their associated functions by clicking and dragging the nerve next to its correct function. Trochlear Abducens Smell Hypoglossal Optic Equilibrium and hearing Vagus Trochlear Sensory impulses from teeth and face Optic Olfactory Regulates thoracic and abdominal viscera Accessory Oculomotor Stimulates superior oblique muscle of eye Trigeminal Trigeminal Adjusts light entering eyes and eyelid opening Oculomotor Vagus Stimulates lateral rectus muscle of eye Olfactory Facial Controls neck and shoulder movements Vestibulocochlear Accessory Sensory from anterior tongue and controls salivation and secretion of tears Abducens Hypoglossal Sensory from posterior tongue and controls salivation and swallowing

The Correct Answer and Explanation is:

Here’s how the cranial nerves match with their functions:

1. Trochlear – Stimulates superior oblique muscle of eye.
   • The trochlear nerve (CN IV) innervates the superior oblique muscle, which is responsible for eye movement, specifically downward and inward movement.
2. Abducens – Stimulates lateral rectus muscle of eye.
   • The abducens nerve (CN VI) controls the lateral rectus muscle, which is responsible for moving the eye laterally (outward).
3. Olfactory – Smell.
   • The olfactory nerve (CN I) is responsible for the sense of smell. It transmits sensory information from the olfactory receptors in the nasal cavity to the brain.
4. Optic – Adjusts light entering eyes and eyelid opening.
   • The optic nerve (CN II) is involved in vision, sending visual information from the retina to the brain. It also controls the constriction of the pupil in response to light.
5. Vestibulocochlear – Equilibrium and hearing.
   • The vestibulocochlear nerve (CN VIII) is involved in both hearing and balance. The cochlear part transmits sound information, while the vestibular part helps maintain balance and spatial orientation.
6. Vagus – Regulates thoracic and abdominal viscera.
   • The vagus nerve (CN X) has a wide-reaching function, including regulation of the heart, lungs, and digestive system, and plays a significant role in parasympathetic control.
7. Trigeminal – Sensory impulses from teeth and face.
   • The trigeminal nerve (CN V) is responsible for sensory information from the face, teeth, and mucous membranes. It also controls some muscles for chewing.
8. Oculomotor – Adjusts light entering eyes and eyelid opening.
   • The oculomotor nerve (CN III) controls most of the muscles that move the eye, as well as the muscles that control the size of the pupil and the opening of the eyelid.
9. Facial – Sensory from anterior tongue and controls salivation and secretion of tears.
   • The facial nerve (CN VII) provides taste sensation to the anterior two-thirds of the tongue and is responsible for facial expressions, salivation, and secretion of tears.
10. Hypoglossal – Controls tongue movements.
    • The hypoglossal nerve (CN XII) controls all intrinsic and most extrinsic muscles of the tongue, enabling tongue movement during speech and swallowing.
11. Accessory – Controls neck and shoulder movements.
    • The accessory nerve (CN XI) innervates the sternocleidomastoid and trapezius muscles, responsible for head and shoulder movement.
12. Trigeminal – Sensory from anterior tongue and controls salivation and secretion of tears.
    • This matches the facial nerve’s function, not the trigeminal.

Each nerve plays a unique role, and their correct functioning is vital for maintaining normal sensory and motor activities across the body.