Podcast
Questions and Answers
What is the function of melanozymes in the RPE?
What is the function of melanozymes in the RPE?
- Phagocytosis of photoreceptor outer segments (correct)
- Absorbing photons of light
- Synaptic transmission between photoreceptors and bipolar cells
- Transport of ions, water, and metabolites between the choroid and retina
What is the approximate number of rods in the human retina?
What is the approximate number of rods in the human retina?
- 200 million
- 6-8 million
- 300 million
- 120 million (correct)
What is the function of the photoreceptor layer?
What is the function of the photoreceptor layer?
- To produce melanozymes
- To absorb photons of light (correct)
- To transmit light signals to the brain
- To regulate ion transport
What is the shape of the photoreceptors in the photoreceptor layer?
What is the shape of the photoreceptors in the photoreceptor layer?
What is the function of the cilium in photoreceptors?
What is the function of the cilium in photoreceptors?
What is the function of the disk lamellae in rod outer segments?
What is the function of the disk lamellae in rod outer segments?
What is the function of the triad-type synapse in cone pedicles?
What is the function of the triad-type synapse in cone pedicles?
What is the approximate number of cones in the human retina?
What is the approximate number of cones in the human retina?
What type of cells project to the magnocellular layer of the LGN?
What type of cells project to the magnocellular layer of the LGN?
Which of the following layers is absent over the optic disc?
Which of the following layers is absent over the optic disc?
What type of cells provide structure, support, and protection to the retina?
What type of cells provide structure, support, and protection to the retina?
What is the primary function of the photopigment molecules in the photoreceptor outer segment?
What is the primary function of the photopigment molecules in the photoreceptor outer segment?
Which layer starts peripherally around the fovea?
Which layer starts peripherally around the fovea?
What is the function of the papillomacular bundle?
What is the function of the papillomacular bundle?
What is the approximate number of lipid bilayered discs in the outer segment of a rod or cone cell?
What is the approximate number of lipid bilayered discs in the outer segment of a rod or cone cell?
Which region of the photoreceptor inner segment is involved in metabolic activity and photopigment synthesis?
Which region of the photoreceptor inner segment is involved in metabolic activity and photopigment synthesis?
What type of cells have a role in signal processing?
What type of cells have a role in signal processing?
Where are the axons of ganglion cells collectively found?
Where are the axons of ganglion cells collectively found?
What is the function of the cilium in the photoreceptor cell?
What is the function of the cilium in the photoreceptor cell?
What is the purpose of Müller cells in the retina?
What is the purpose of Müller cells in the retina?
What is the name of the region in the photoreceptor inner segment where mitochondria is found?
What is the name of the region in the photoreceptor inner segment where mitochondria is found?
What is the primary function of the outer nuclear layer in the retina?
What is the primary function of the outer nuclear layer in the retina?
What is the name of the lipid bilayered structure that surrounds the photopigment molecules in the outer segment?
What is the name of the lipid bilayered structure that surrounds the photopigment molecules in the outer segment?
What is the name of the structure that connects the photoreceptor inner segment to the outer segment?
What is the name of the structure that connects the photoreceptor inner segment to the outer segment?
What is the primary function of the macula lutea?
What is the primary function of the macula lutea?
What is the purpose of the xanthophyll pigments, lutein and zeaxanthin?
What is the purpose of the xanthophyll pigments, lutein and zeaxanthin?
What is the approximate diameter of the macula lutea?
What is the approximate diameter of the macula lutea?
What is the characteristic of the foveal avascular zone?
What is the characteristic of the foveal avascular zone?
What is the primary function of the fovea?
What is the primary function of the fovea?
What is the diameter of the foveola?
What is the diameter of the foveola?
What is the characteristic of the cone photoreceptors in the foveola?
What is the characteristic of the cone photoreceptors in the foveola?
What is the region of best visual acuity?
What is the region of best visual acuity?
What is the primary function of the Outer Plexiform Layer?
What is the primary function of the Outer Plexiform Layer?
What is the difference between rod spherules and cone pedicles?
What is the difference between rod spherules and cone pedicles?
What is the purpose of Henle's fiber layer?
What is the purpose of Henle's fiber layer?
What type of synapses do rod bipolar cells form with rods and cones?
What type of synapses do rod bipolar cells form with rods and cones?
What is the function of horizontal cell processes in the Outer Plexiform Layer?
What is the function of horizontal cell processes in the Outer Plexiform Layer?
What is unique about the Outer Plexiform Layer in terms of blood supply?
What is unique about the Outer Plexiform Layer in terms of blood supply?
What is the primary difference between the external and internal bands of the Outer Plexiform Layer?
What is the primary difference between the external and internal bands of the Outer Plexiform Layer?
What type of synapses do flat cone bipolar cells form with cone pedicles?
What type of synapses do flat cone bipolar cells form with cone pedicles?