Question

Which of the following is false?a. Rods cannot detect color The visual pigment of cones is iodopsin.b. Most of the optic tract axons terminate in the lateral geniculate nucleus of the thalamus.c. Association neurons in the inner retinal layers modify signals of rods and cones.d. Most of the optic tract axons terminate in the medial geniculate nucleus of the thalamus.

Answer 1

Answer: The false statement in the group of options is, Option D. Most of the optic tract axons terminate in the medial geniculate nucleus of the thalamus. This statement is wrong because most of the optic tract axons, terminate on the neuron in the lateral geniculate nucleus(LGN) of the thalamus.

Explanation:The fibers of the optic nerve, contains retin ganglion cell axons, that originate from the ganglion cells in the nasal half of the retina.

The axons in the optic tract terminate in four nuclei within the brain, which are as follows;

1. The lateral geniculate nucleus of the thalamus. This is the visual perception.

2. The superior colliculus of the midbrain. This helps to control the movement of the eye.

3. The pretectum of the midbrain. This helps to control the reflex light of the pupillary.

• The suprachiasmatic nucleus of the hypothalamus. This control to control the diurnal rhythms.