Anatomy Lecture 6: Optic and Extraocular Motor Pathways

The visual pathway begins when light is refracted through the pupil.

The image is processed through the auditory pathway in the brain.

The optic nerve is formed by the retinal ganglion cells and bipolar cells.

The optic chiasm is located at the posterior part of the sella turcica.

The nasal fibers of each retina do not cross at the optic chiasm.

The optic tracts go to the primary visual cortex (BA 17) without passing through the LGB/LGN.

The photoreceptors in the retina communicate with the ganglion cells directly.

The light is converted into electrical impulses in the optic chiasm.

The primary visual cortex is located at the frontal lobe.

When the head turns to the left, the eye turns to the left to prevent the image of interest from moving away during head movement.

The Retinal Field Reflex is a type of reflex that is involved in the pupillary light reflex.

The right frontal eye field fires when we want to look to our right.

The Medial Longitudinal Fasciculus (MLF) is a structure involved in the pathway of extraocular movements.

The saccadic system is responsible for smooth eye movement.

The superior colliculus is involved in the smooth pursuit pathway.

The Paramedian Pontine Reticular Formation (PPRF) is a command center for smooth pursuit movements.

The trochlear nucleus supplies the inferior oblique muscle.

The Lateral Geniculate Body (LGB) is a structure involved in the pupillary light reflex pathway.

The posterior commissure is where some fibers cross and some do not cross in the vertical saccade pathway.

The Internal Carotid Artery (ICA) is a structure involved in the neuroanatomical basis of ocular movements.

The Rostral Internucleus of MLF (RiMLF) is a structure involved in the pathway of saccadic movements.

The vergence pathway utilizes the saccadic pathway.

Visual impulses from BA 18 and 19 are contralateral in the smooth pursuit pathway.

Lesions of the Visual Pathway can cause a Relative Afferent Pupillary Defect (RAPD).

The Brodmann Area (BA) is a structure involved in the pupillary light reflex pathway.

The optic radiation is involved in the vergence pathway.

The Semicircular Canal (SCC) is a structure involved in the vestibular system, but not in the visual pathway.

The superior visual field is projected to the inferior hemiretina.

The nasal visual field is projected to the nasal hemiretina.

The optic tract nerve fibers terminate in the optic chiasm.

The lateral geniculate body gives rise to the optic tract.

The pretectal area is involved in the reflex movement of the eyes and head.

The superior colliculi are involved in the last relay of the visual pathway.

The visual field is projected to the retina in an upright and unreversed manner.

The temporal visual field is projected to the temporal hemiretina.

The geniculocalcarine tract is formed by the optic tract nerve fibers.

When the head turns to the left, the eyes would look to the left.

The impulses from the CN VIII nuclei are sent directly to the lateral rectus muscle via CN VI.

During the examination of EOMs, the patient's head moves along with the eyes.

The Doll's Eye Maneuver is used to examine the patient's visual field.

The occipital gaze center is responsible for regulating eye movement.

The visual field is projected to the retina in an upright and unreversed manner.

The patient is seen looking to the left and down when their head is rotated to the right.

The CN VIII nuclei are located in the cerebrum.

The medial rectus muscle is supplied by the CN VI nerve.