Optic Nerve Flashcards
The optic nerves are composed of axons of _________ of ________ layer.
multipolar ganglionic neurons of ganglionic layer of optic nerve.
All the neuronal elements of the eye are derived from _______ of __________.
Optic vesicle of prosencephalon.
The layer of the optic nerve in the retina is formed by the axons of ____________.
Multipolar ganglionic neurons.
Name the three layers of the eyeball.
Fibrous Tunic, Vascular Tunic, Internal / Sensory Tunic.
The uvea is formed by the _________, ________ & ________.
Iris, Ciliary Body & Choroidea.
Name the vascular tunic located in the posterior portion of the eyeball.
Choroidea
Name the vertical cells, which mark the internal & external limiting membranes.
Glial cells of mueller.
Name the retinal layer where the horizontal cells are located.
Outer plexiform layer.
Name the outer most layer of the retina.
Pigmented epithelium
Name the very thin choroid and sclera layers, which are penetrated by the optic nerve fibers at the optic disc.
Lamina Cribrosa.
The optic nerve enters the cranial cavity through ________ of _______ of sphenoid bone.
Optic canal of lesser wing
At the optic chiasma the optic nerve fibers from MEDIAL / LATERAL half of both eyes decussate.
Medial
The left optic tract carries optic nerve fibers only from the left half of both eyes. True / False.
True
The axons of the primary optic neurons end at the _________layer of the retina to synapse with the secondary neurons.
Inner plexiform.
Name the principle nucleus of termination of the optic nerves.
Lateral geniculate body
Name the nucleus of origin of the reflex movement of the sphincter pupillae.
Pretectal nucleus
The right and left cortical centers of vision are interconnected by_________ of ___________.
Major forceps of corpus collosum.
Optic tract lesion might cause ?
Hemianopia.
