Eye and Retina Histology Flashcards
3 layers of the eye and its components
1) fibrous tunic: most outer layer. Involves sclera and cornea 2) vascular tunic: iris, ciliary body, choroid 3) retina: pigmented layer, neural layer.
how many layers of the retina?
10
colored portion of the eye
iris. part of vascular tunic.
what is the purpose of the choroid
highly vascularized that adheres to the sclera. part of vascular tunic.
the ciliary body is located between the ___ and ___. what are its components?
between the choroid and iris. Contains smooth ciliary muscle and ligaments to suspend the lens.
2 major parts of the retina
1) pigmented retina: melanocytes that look like cuboidal/low columnar cells. 2) neural retina: Many cell types including photoreceptors (rods and cones), bipolar cells, and ganglion cells
the central retinal artery and vein pass through the ___ __ and enter the eye at the __ __
pass through the optic nerve and enter the eye at the optic disc.
10 layers of the retina from OUTSIDE to inside
1.Pigmented epithelium 2.Photoreceptive layer 3.External limiting membrane 4.Outer nuclear layer 5.Outer plexiform layer 6.Inner nuclear layer 7.Inner plexiform layer 8.Ganglion cell layer 9.Optic nerve fiber layer 10. Inner limiting membrane
label the 10 layers
- Pigmented epithelium
- Photoreceptive layer
- External limiting membrane
- Outer nuclear layer
- Outer plexiform layer
- Inner nuclear layer
- Inner plexiform layer
- Ganglion cell layer
- Optic nerve fiber layer
- Inner limiting membrane
What type of cells are present in the ganglion cell layer? (9)
ganglion cells
the inner plexiform layer contains the synaptic ocnnections between ____ cells and ____ cells.
between bipolar cells and ganglion cells.
the inner nuclear layer contains ___ cells
bipolar cells
the outer plexiform layer contains: synaptic connections between ___ cells, ____ cells and ____ cells
the outer plexiform layer contains: synaptic connections between BIPOLAR cells, HORIZONTAL cells and PHOTORECEPTOR cells
the outer nuclear layer contains
the rod and cone photoreceptor bodies.
the boarder of the outer limiting membrane is made of ___ cells and ____ cells. What kind of cell junctions are found between these two cells?
the boarder of the outer limiting membrane is made of Muller cells and PHOTORECEPTOR cells. What kind of cell junctions are found between these two cells?
label the image
BS= blind spot
O= optic nerve
S= sclera
