The optic nerve is composed of axons of retinal ganglion cells. These ganglion cells transmit visual information from the retina to the brain for processing.
a nerve impulse
Neurotransmitters in a neuron allow a nerve impulse to be transmitted from one neuron to another by crossing the synapse and binding to receptors on the receiving neuron. This triggers an electrical or chemical signal to continue the nerve impulse along the neural pathway.
When the electrical impulse from a nerve stops, the muscle relaxes and returns to its resting state. This is because the nerve impulse initiates the release of calcium ions in the muscle cells, leading to muscle contraction. When the nerve impulse stops, the calcium ions are reabsorbed, causing the muscle to relax.
The pterygopalatine ganglion is responsible for lacrimation (tear production). It receives preganglionic parasympathetic fibers from the facial nerve (CN VII) via the greater petrosal nerve and contributes to the regulation of tear secretion.
ganglion cells
First you must understand how light is transferred into an image by the eye. Located in the retina at the back of the eye are millions of photoreceptors. The way I understand them to work is they are constantly blocking any impules from themselves to the next connection, ganglions. When light hits these potoreceptors, the impulse is released, travels through the ganglion, and then is transmitted to the actual optic nerve. So according to this question, the photoreceptors are the trigger of light to impulse, but the answer to your question is the ganglion that transmitts the impulse to the optic nerve.
First you must understand how light is transferred into an image by the eye. Located in the retina at the back of the eye are millions of photoreceptors. The way I understand them to work is they are constantly blocking any impules from themselves to the next connection, ganglions. When light hits these potoreceptors, the impulse is released, travels through the ganglion, and then is transmitted to the actual optic nerve. So according to this question, the photoreceptors are the trigger of light to impulse, but the answer to your question is the ganglion that transmitts the impulse to the optic nerve.
nerve impulse
The optic nerve is composed of axons of retinal ganglion cells. These ganglion cells transmit visual information from the retina to the brain for processing.
Light enters the eye through the cornea, then passes through the pupil and the lens. The light is focused and projected onto the retina at the back of the eye where it is processed by the photoreceptor cells and transmitted to the brain via the optic nerve.
a nerve impulse
Yes. The Retinal Ganglion Cell axons form the optic nerve.
Ganglion cells A ganglion is a biological mass of nerve cells.
How does a nerve impulse follow the all-or-nothing principle???
Yes, there is a difference between ganglion and ganglia. Ganglion refers to a single nerve cell cluster, while ganglia is the plural form, referring to multiple nerve cell clusters.
Retinal ganglion cells.