The reflex pathway consists of retinal ganglion cells, which convey information from the photoreceptors to the optic nerve which connects to the pretectal nucleus of the high midbrain. It bypasses the lateralgeniculate nucleus and the primary visual cortex.
The River Nile is about 6,670 km (4,160 miles) in length and is the longest river in Africa and in the world. Although it is generally associated with Egypt, only 22% of the Nileâs course runs through Egypt.
Best Answer: The Nile River is the longest river in the world, stretching for 4,187 miles. The Nile flows from south to north and is formed by three major tributaries: the White Nile, the Blue Nile and the Atbara. The Blue Nile has its source in the highlands of the African country of Ethiopia, by Lake Tana.he Nile is actually formed from two tributaries-the White Nile and the Blue Nile. The White Nile starts at Lake Victoria, in Uganda, the Blue Nile starts at Lake Tana in Ethiopia. They meet at Khartoum in Sudan.