13910804
Description
Mind Map by Laura Biviana Sánchez, updated more than 1 year ago
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Created by Laura Biviana Sánchez
almost 6 years ago
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CN II (OPTIC NERVE)
- AFFERENT NERVE
- ORIGIN
- Its real origin is given
by the retina cells of
the eyeball.
- ROUTE
- The ganglion cells
of the retina
- They create nerve branches that
come together to form:
- Optic Disc
- In the posterior
part of the
eyeball.
- Of the optical disc
comes off:
- Optic Nerve
- leaves the
eyeball
- leaves the orbital cavity
- Crosses the superior orbital fissure (vertex of
the orbit), until it reaches the optic canal where
it leaves next to the ophthalmic artery.
- It enters the cranial cavity where it will reach its
apparent origin:
- Optic
Chiasm
- BRANCHES
- optic tracts
- the fibers project to the lateral geniculate nucleus of the thalamus, located in the depth of
the lateral geniculate body. The thalamic neurons project, through the optical radiations,
to the primary visual cortex.
- the fibers project to the lateral geniculate nucleus of the thalamus, located in the depth of
the lateral geniculate body. The thalamic neurons project, through the optical radiations,
to the primary visual cortex.
- optic tracts
- The anterior cerebral fossa, in
front of the sella turcica.
- BRANCHES
- Optic
Chiasm
- Crosses the superior orbital fissure (vertex of
the orbit), until it reaches the optic canal where
it leaves next to the ophthalmic artery.
- It crosses the posterior pole of the
eyeball (the choroid and the sclerotic
layer).
- leaves the orbital cavity
- leaves the
eyeball
- Optic Nerve
- In the posterior
part of the
eyeball.
- Optic Disc
- posterior pole
of the eyeball
- They create nerve branches that
come together to form:
- The ganglion cells
of the retina
- Its real origin is given
by the retina cells of
the eyeball.
- ESPECIAL SENSORY:VISION
- FUCTION
- It is also responsible for
sending the signals
- that the eye perceives to our brain.
- The brain interprets these signals
from external stimuli to conform the
mental image of what we are seeing.
- The brain interprets these signals
from external stimuli to conform the
mental image of what we are seeing.
- that the eye perceives to our brain.
- In the optic chiasm, all the fibers that carry
information from the nasal hemirretine pass
to the contralateral side, and the fibers of
the temporal hemirretina pass ipsilateral, to
form the right and left optic tracts.
- This allows the images on each side of
the field of both eyes to be
transmitted to the appropriate side of
the brain.
- This allows the images on each side of
the field of both eyes to be
transmitted to the appropriate side of
the brain.
- The retina receives the inverted
image on its walls. The light
stimulates the cones and the
staffs
- This structures involved
- In receiving and
transmitting optical
stimuli
- as the optical fibers
and neural retina
- as the optical fibers
and neural retina
- In receiving and
transmitting optical
stimuli
- This structures involved
- It is also responsible for
sending the signals
- Are surrounded by
extensions of the cranial
meninges and
subarachnoid space
- The meninges extend
all the way to the
eyeball.
- The meninges extend
all the way to the
eyeball.
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