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Nerves
Nerves are thread-like structures that form a network of pathways that transmit information from the brain to the body and the body to the brain, in the form of electrical impulses.
1,605 Questions
What are two classifications of sensory receptors?
There are many different sensory receptors, but olfactory receptors in the nose, and cones and rods in the eyes are two specific types of sensory receptors. Olfactory detects the chemical presence and your brain identifies it as a smell. The rods and cones of the eye process light and color to form images that your brain processes as vision.
Which component has a role in the post synaptic cell during synaptic activity?
Chemically Gated Channels.
What specific effects does caffeine have on other neurons?
If too much caffeine is in your system, there can be a temporary impulse on the other neurons. This sudden impulse will momentarily wake up your brain but will damage some neurons. The neurons may get aggravated and cause them to shake violently. This friction could cause the neurons to join together with another neuron which would cause an oxypartifamine reaction. That means that the neuron will merge and could cause serious brain problems. If experiencing brain problems, one should immedietely consult a doctor for further advice.
DO NOT WASTE TIME
GO SEE A DOCTOR
Where can a neuron be stimulated?
The cell membrane becomes more permeable to the sodium potassium ions.
Which organ regulates the pituitary gland?
The hypothalamus in the brain regulates the pituitary gland.
What is the diameter of a nerve?
Nerves are pretty small. Consider that the human spinal cord, with its many, many nerve pathways, is under 10 mm in diameter at it widest point. Individual nerves have diameters ranging from perhaps 4 to 100 micrometers, depending on the location.
What is the difference between nerve and neuron?
A neuron is an individual cell in the PNS or CNS that can be excited and conduct impulses along its axon.
A nerve is a bundle of multiple neuron fibers that each are carrying their own signals. They are protected by connective tissue. Eventually the neuron fibers diverge away from the nerve to reach their destination.
What is the mechanism of a conduction of an action potential across a synapse?
Exocytosis occurs releasing neurotransmitters into the synapse. They diffuse across the synapse to receptor sites on ligand-gated sodium ion pores on the post-synaptic neuron, causing those pores to open, allowing sodium ions into the receiving neuron.
Those sodium ions cause an electrotonic signal to travel down the dendrite and soma to the axon hillock; these signals are considered to be a graded response, in that they may be more or less strong.
If the strength (level of voltage) at the axon hillock is sufficient, it will trigger voltage-gated sodium pores to open in the initial segment of the axon, which will allow more sodium ions into the axon at that point, causing v-gated ion pores a small distance away to open, letting more sodium ions in, opening more v-gated ion pores yet further awy to open, etc,; this process is known as an action potential.
(The neurotransmitters in the initial receptor sites has to be removed to close the ligand-gated sodium ion pores at the beginning of this process so that the neuron does not just fire continuously.)
What are the afferent and efferent fibers for Pretectal nucleus of the midbrain?
- It receives its afferent light impulses from the retina and occipital cortex.
- it gives efferents to the Edinger-Westphal nuclei of both sides.
What are similarities neuro synaptic transmission and nerve conductive have?
both are electrical movement
The Aural nerve is a nerve in your ear, how ever I am not quite sure of the exact job. Hope it helped:D
You mean "you're" (= "you are"), not "your", which is "your" as in "your book."
And we don't usually say, "You're on my nerves." We say, "You're getting on my nerves."
So your question should be, "What if you're getting on my nerves?"
The answer to that question is already on WikiAnswers. Go to http://www.answers.com/nerve and check "idioms."
Nerve fibers of the olfactory tracts lead to?
The olfactory tract is split into medial and lateral.
Their projections are to 5 different areas of the brain- anterior olfactory nucleus, olfactory tubercle, Piriform cortex, Amygdala, Entorhinal cortex
The lateral tract originates from the olfactory epithelium separates into mitral cells and tuft cells. mitral cells synapses onto all 5 of the regions to ultimately synapse onto the orbitofrontal cortex via the thalamus or the frontal cortex. tufted cells on the other hand only synapse onto the anterior olfactory nucleus and the olfactory tubercle
The medial or vomeronasal tract projects to mitral cells that synapse only to the Amygdala
