Retina Flashcards
(15 cards)
What is the primary function of phototransduction?
Conversion of light into electrical signals in the retina
Phototransduction is essential for vision, allowing the detection of light by photoreceptors.
List the main components of the eye’s anatomy that need to be studied.
- Retina
- Choroid
- Sclera
- Vitreous
- Ciliary Body
- Iris
- Lens
- Cornea
- Anterior Chamber
- Posterior Chamber
- Ora Serrata
These components are crucial for understanding ocular anatomy and function.
What is another name for the retinal pigmented epithelium?
Outer pigmented layer
This layer is critical for the health and function of photoreceptors.
What types of photoreceptors are found in the retina?
- Rods
- Cones
Rods are responsible for vision in low light, while cones are responsible for color vision and visual acuity.
Fill in the blank: The _______ contains discs that contain rhodopsin.
Outer Segment
Rhodopsin is a light-sensitive pigment found in rod cells.
What are the two segments of a photoreceptor cell?
- Outer Segment
- Inner Segment
The outer segment contains photopigments, while the inner segment contains organelles.
What are the types of bipolar cells in the retina?
- Rod Bipolar Cells
- Flat Bipolar Cells
- Midget Bipolar Cells
Each type of bipolar cell has specific roles in processing visual information.
What is the function of ganglion cells in the retina?
Transmit visual information from the retina to the brain
Ganglion cells are the output neurons of the retina.
True or False: Müller cells are a type of glial cell in the retina.
True
Müller cells support retinal structure and function.
What type of connections do horizontal and amacrine cells have?
Synaptic connections with bipolar and ganglion cells
These cells play a crucial role in the lateral processing of visual information.
What is the lamina cribrosa?
A structure where ganglion cell axons exit the eye
It is important for understanding optic nerve health.
What is the main blood supply to the retina?
- Central retinal artery
- Choroidal capillaries
Adequate blood supply is essential for retinal health and function.
Fill in the blank: The _______ is the area of the retina responsible for high acuity vision.
Fovea
The fovea is densely packed with cones and is crucial for detailed vision.
What are the two main types of cells in the inner retina?
- Bipolar Cells
- Ganglion Cells
These cells are vital for relaying visual signals to the brain.
What type of cells are astrocytes in the retina?
Glial cells that support neuronal function
Astrocytes play a role in maintaining the blood-retinal barrier.
