After leaving the optic chiasm, the optic tracts primarily extend to which of the following structures?

• A. Primary motor cortex
• B. Medulla oblongata
• C. Lateral geniculate nucleus of the thalamus
• D. Cerebellum

Answer: (C)

Verified step by step guidance

1. Understand the anatomy of the visual pathway: The optic nerve carries visual information from the retina to the brain. At the optic chiasm, some fibers cross to the opposite side, forming the optic tracts.
2. Learn the role of the optic tracts: After the optic chiasm, the optic tracts carry visual information to specific brain structures for processing.
3. Identify the primary destination of the optic tracts: The lateral geniculate nucleus (LGN) of the thalamus is the main relay center for visual information. It processes and sends signals to the visual cortex.
4. Eliminate incorrect options: The primary motor cortex is involved in movement, not vision. The medulla oblongata regulates autonomic functions, and the cerebellum coordinates movement and balance, none of which are directly involved in visual processing.
5. Conclude that the lateral geniculate nucleus of the thalamus is the correct answer, as it is the primary structure where the optic tracts extend after leaving the optic chiasm.