4 PRIMER (PHOTO-PUPIL/PUPILLARY REFLEX, LESION ON PUPILLARY PATHWAY) Flashcards
to check the integrity of the visual and pupillary pathway
- PHOTO-PUPIL/PUPILLARY REFLEX
- COLOR VISION
PHOTO-PUPIL/PUPILLARY REFLEX
Reflex that controls the diameter of the pupil in response to intensity of light that falls on the retina of the eye
- PHOTO-PUPIL/PUPILLARY REFLEX
- COLOR VISION
PHOTO-PUPIL/PUPILLARY REFLEX
Regulates the intensity of light entering the eye
- PHOTO-PUPIL/PUPILLARY REFLEX
- COLOR VISION
PHOTO-PUPIL/PUPILLARY REFLEX
smaller pupil-less light in
- Greater intensity of light
- Lower intensity of light
Greater intensity of light
larger pupil-more light in
- Greater intensity of light
- Lower intensity of light
Lower intensity of light
Stimulation of one retina by light produces contraction of pupil on the same eye
- DIRECT LIGHT REFLEX
- CONSENSUAL LIGHT REFLEX
- ACCOMMODATIVE CONVERGENCE REFLEX
DIRECT LIGHT REFLEX
Stimulation of one retina by light produces a contraction in the opposite eye
- DIRECT LIGHT REFLEX
- CONSENSUAL LIGHT REFLEX
- ACCOMMODATIVE CONVERGENCE REFLEX
CONSENSUAL LIGHT REFLEX
Person looking at an object close to the face will cause contraction of the pupils
- DIRECT LIGHT REFLEX
- CONSENSUAL LIGHT REFLEX
- ACCOMMODATIVE CONVERGENCE REFLEX
- ACCOMMODATIVE CONVERGENCE REFLEX
STUDY!!!!!
Arrange the PUPILLARY PATHWAY
1 POST-GANGLIONIC FIBER 2 ENDINGER WESTPHAL NUCLEUS 3 OPTIC CHIASMA 4 PRE-GANGLIONIC FIBER 5 RETINA 6 CILIARY GANGLION 7 OPTIC TRACT 8 SPHINCTER PUPILLAE, CILIARY MUSCLES 9 PRE-TECTAL NUCLEUS 10 OPTIC NERVE
5-10-3-7-9-2-4-6-1-8
5 RETINA 10 OPTIC NERVE 3 OPTIC CHIASMA 7 OPTIC TRACT 9 PRE-TECTAL NUCLEUS 2 ENDINGER WESTPHAL NUCLEUS 4 PRE-GANGLIONIC FIBER 6 CILIARY GANGLION 1 POST-GANGLIONIC FIBER 8 SPHINCTER PUPILLAE, CILIARY MUSCLES
responsible for the afferent limb of pupillary reflex (senses the Incoming light)
- OPTIC NERVE
- OCCULOMOTOR NERVE
OPTIC NERVE
responsible for the efferent limb of the pupillary reflex (drives the muscles that constricts the pupil)
- OPTIC NERVE
- OCCULOMOTOR NERVE
OCCULOMOTOR NERVE
Lesion is from retina to nucleus
- RELATIVE AFFERENT PUPILLARY DEFECT
- RELATIVE EFFERENT PUPILLARY DEFECT
RELATIVE AFFERENT PUPILLARY DEFECT
Lesion is from pre-ganglionic to post ganglionic fiber
- RELATIVE AFFERENT PUPILLARY DEFECT
- RELATIVE EFFERENT PUPILLARY DEFECT
RELATIVE EFFERENT PUPILLARY DEFECT
If light is presented on the affected eye
- No direct light reflex
- with direct light reflex
No direct light reflex
If light is presented on the affected eye
- No consensual light reflex
- with consensual light reflex
No consensual light reflex