Flashcards in C: Accomodation Reflex Deck (8)
What are the 3 components of the accomodation reflex - which muscle does each?
1) Pupils constrict - sphincter pupillae
2) Ocular convergence medial rectus
3) Lens rounding - contraction ciliary muscle
Which CN carries the afferent limb of the accomodation reflex and which the efferent?
Afferent = CN1
Efferent = CN2
In the accommodation reflex is the striate cortex involved?
Yes - afferent part ends here and gives rise to interneuron which synpases with first neuron in efferent part of the reflex
In the accomodation reflex fibres from the striate cortex synapse where?
In the somatic occulomotor nucleus
In the Edinger Westphal (PS) occulomotor nucleus
What happens in the somatic occulomotor nucleus in the accomodation reflex?
Fibres from striate cortex synapse with fibres which travel to medial rectus via CN3
What happens in the Edinger Westphal nucleus in the accomodation reflex?
Fibres from the striate cortex synapse with preganglionic PS fibres which travel to ciliary ganglion via CN3
Which autonomic ganglion of the head is involved in the accomodation reflex?