0
the effects are ciliary muscle contraction leading to a constricted pupil and opening of the canal of schlemm to all aqueous humour drainage. Also there is an increase in tear formation. The PNS has a role in accomodation to light.
Wiki User
∙ 14y ago
Wiki User
∙ 15y agoCiliary ganglion
Add your answer:
Earn +20 pts
What is the path of light from the outside of the eye to the retina?
Qustion:The correct pathway for impulses leaving the retina? My answer: photoreceptors, ganglion cells, bipolar cells, and optic nerve.
Is a ganglion dangerous?
No, ganglion cysts are not dangerous at all. (I have a ganglion cyst in my wrist).
What are the innervation of the eye?
Cranial nerve #2 - optic nerve - special sensory for vision Cranial nerve #3 - occulomotor nerve - motor for extraoccular muscles & parasympathetic to ciliary ganglion Cranial nerve #4 - trochlear nerve - motor for extraoccular muscle (superior oblique) Cranial nerve #6 - abduscens nerve - motor for extraoccular muscle (lateral rectus)
The development of swelling on the outer surface of the wrist is?
medical term: Ganglion Cyst
What part of the eye contains no rods or cones?
Many parts actually but if you're talking about the back of the eye (retina) then it would be the optic disk where all the ganglion cell axons exit the back of the eye to form the optic nerve.
How many parasympathetic ganglion are in the head and neck?
4
How does the synaptic nervous system affect the iris?
The iris is not innervated directly, however the iris sphincter muscle is affected by the sympathetic and parasympathetic nervous systems. Sympathetic stimulation causes pupil dilation while parasympathetic nervous system causes pupil constriction. The parasympathetic response is quicker because of the proximity of a parasympathetic ganglion (ciliary ganglion) to the eye. The sympathetic response is slower because all sympathetic ganglia are confined to the spinal cord. This is the reason why people adjust faster to a bright shining light than darkness.
Once a sympathetic preganglionic axon reaches a trunk ganglion what can it do?
it can 1. synapse with a ganglionic neuron in the same trunk ganglion, 2. ascend or descend the sympathetic trunk to synapse in another trunk ganglion or 3. pass through the trunk ganglion and emerge from the sympathetic trunk without synapsing The answer: Synapse with a parasympathetic neuron in the same trunk ganglion
What component of the ANS is characterized by ganglion located in or near effector organs?
The component of the ANS that is characterized by ganglion located in or near effector organs is called the parasympathetic nervous system. The ganglia of the parasympathetic nervous system are located close to or within the target organs they innervate, allowing for direct and localized control of bodily functions. This branch of the autonomic nervous system is responsible for promoting rest, digestion, and relaxation.
What division alone stimulates the lens of the eye?
parasympathetic
Which cranial nerve is responsible for adjusting amount of light entering eye?
The amount of light is actually controlled by the iris sphincter muscle, or the iris. It is controlled by parasympathetic fibers that originate from the Edinger-Westphal nucleus, travel along the oculomotor nerve (CN III), synapse in the ciliary ganglion, and then enter the eye via the short ciliary nerves.
Does the parasympathetic nervous system increase or decrease BP?
The parasympathetic nervous system serves as the "rest and digest" system, which results in vasodilation of the peripheral vessels. This results in an overall decrease in blood pressure :)
Parasympathetic fibers of which nerve innervate smooth muscles of the lens of the eye - the eye muscles that cause the eye to bulge to accommodate close vision?
Optic
What is the path of light from the outside of the eye to the retina?
Qustion:The correct pathway for impulses leaving the retina? My answer: photoreceptors, ganglion cells, bipolar cells, and optic nerve.
Involving the loss of retinal ganglion cells what eye condition gets its name from the Greek for gray?
Glaucoma
What part of the PNS controls the pupillary response?
Pupillary response is controlled by the autonomic nervous system.In bright light or when looking at close objects, the parasympathetic nervous system will cause pupillary constriction by activating the sphincter pupillae muscle(s). The parasympathetic nerves that innervate the sphincter pupillae are the short ciliary nerves, which come from the ciliary ganglion in the orbit. Innervation of the ciliary ganglion is via parasympathetic pre-ganglionic fibers traveling with the occulomoter nerve from the edinger-westfall nucleus in the cranial midbrain.In low light, when looking at distant objects, or when stress levels are high (fight or flight) the sympathetic nervous system will cause pupillary dilation by activating the iris dilator muscle(s). The sympathetic nerves that innervate these muscles come from the superior cervical ganglion.
Is a ganglion dangerous?
No, ganglion cysts are not dangerous at all. (I have a ganglion cyst in my wrist).
