Visceral Reflexes Flashcards
What is being tested when performing the pupillary light reflex
Afferent CN II
Efferent CN III
What would a positive Pupillary light reflex look like and indicate
Unilateral or no constriction of pupils
CN II or CN III lesion
What is being tested in an accommodation refelx
CN III
What would a positive accommodation reflex look like and indicate
Eye(s) dont converge
CN III lesion
What is being tested in a Ciliospinal reflex
Afferent cervicals and CN V
Efferent cervical sympathetics
How do you perform a Ciliospinal reflex
Pinch the neck of the patient and watch to see if their pupils dilitate
What does a positive ciliospinal reflex look like and indicate
No diliation of pupil
Lesion of the cervical sympathetics
What does the Oculocardiac reflex test
Afferent CN V
Efferent CN X
How do you perform the Oculocardiac reflex test
Thumb pressure on the eyes
What does a positive Oculocardiac refelx test look like
No drop in blood pressure or decrease in HR
What is tested in a carotid sinus reflex
Afferent CN IX
Efferent CN X
How do you perform the Carotid sinus reflex
Pressure on the carotid sinus
What would a positive Carotid sinus reflex test look like
no Decrease in HR or drop in BP
What is being tested in the Bulbocavernosus Reflex
S3-S4
How do you test the Bulbocavernosus reflex
Pinch the dorsum of the glans of the penis while look at the patients anal sphincter
