Retina 1. RETINA 2. Photoreceptor cells • These are the primary neurons in the visual pathway • Lie at the outer edge of the retina • The photoreceptor cells differentiate longitudinally into four major regions: 1. the inner segment containing the metabolic apparatus 2. the outer segment containing the visual pigment for the conversion of light into neuroelectrical energy 3.a region containing the cell nucleus 4. a synaptic

1. RETINA

8. Photoreceptor cells
• These are the primary neurons in the visual pathway
• Lie at the outer edge of the retina
• The photoreceptor cells differentiate longitudinally into four major regions:
1. the inner segment containing the metabolic apparatus
2. the outer segment containing the visual pigment for the conversion of light
into neuroelectrical energy
3.a region containing the cell nucleus
4. a synaptic terminal