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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
Can optic nerve impulses only be interpreted as light?
There are two types of sensory receptors: rods and cones. Rods detect light, and cones detect shape.
What are the thread like structures that cointain genes called?
The thread-like structures that contain genes are called chromosomes. Each chromosome is made up of DNA tightly coiled around proteins, which help package and manage the DNA. Humans typically have 23 pairs of chromosomes, with one set inherited from each parent, containing the genetic information necessary for development and functioning.
Who has faster reflexes adults or teenagers?
We (not mentioning the exact names) have done a test on who has the faster reflexes and we have come up with an answer. We tested their reflex times by asking 10 students and 10 adults to turn on and off a specific timer as fast as they could. The slower the reflex time ( i.e.- 45) the slower the reflex. The faster the reflex time (19) the faster the reflex. When we tested the adults ( surprisingly) they had MUCH faster reflex times than the kids. Even though you'd think the opposite. The age categories were under 15 (kids) and over 15 (adults) so there's the proof.
False!
How does the long axon help in a nerve cell?
The axons are long so that action potentials can be sent from one part of the body to another very quickly. If instead of one long axon we had loads of individual cells there would be a much bigger delay because the action potentials would have to be converted to chemical signals very fequently and that takes time.
What are examples of smooth muscles?
kidneys, stomach, intestines, bladder, the eyes, the walls of blood vessels. Smooth muscles that are sometimes called visceral muscles. They are thin muscles that look like spindles. They can be found in your skin and your blood vessels and your organs inside your body.
repolarization
Which part of the neuron can carry information for long distances?
The axon is the part of the neuron that can carry information for long distances.
How is the message caried from one neuron to another it there is a space between them?
The synaptic gap is the space between the dendrites of one neuron and the axon of the next. The impulse is carried across this space by chemicals called neurotransmitters which conduct the electrical impulse.
What does a disc protrusion impressing upon a ventral surface of the cord mean?
The only time you really need surgery to correct this condition is when the disc herniates and occurs at an angle of roughly 45-60 degrees off either side of the disc [when looking down at the disc from above, the back is at the bottom and the 'stomach' is at the top]. What happens then is that the disc can compress one of the spinal nerves as it exits the spinal column. If this occurrs in the neck or the lower back [lumbar area] you can have pain and impairment of the area serviced by that nerve. I've never seen a nerve impingement in the thoracic area, and they are really rare.
If the disc bulge is midline, there isn't enough of it to compress the spinal cord IN THE LOWER BACK... In the neck there can be some cord impingement and problems... If the disc bulge in toward the 'stomach', there is nothing to worry about as no nerves are affectable in that direction.... The key is spinal cord involvement or individual nerve root affectation...
The only time surgery should be contemplated is if a nerve root is compressed severely enough that muscles can be permanently effected...
About 75% of the time a herniated disc will shrink and heal itself after 3-6 weeks have passed...
Gamma-aminoburyric acid appears to decrease synaptic transmission and seems related to what drugs?
Gamma-aminobutyric acid is also known as GABA. It appears to decrease synaptic transmission and is actually used in drugs called GABAergic drugs or GABA analogues. These drugs are used as hypnotics, anticonvulsants, tranquillizers and sedatives.
the connection between the brain and the nerves wich messages travel
Which direction do messages pass down the nerve cells?
Nerve impulses are carried by neurons and passed to other neurons at junctions called synapses. cells pass messages The signal may be directly transferred or can be carried across the gap by chemicals called neurotransmitters.
Why do you get a burning sensation with pins and needles after walking for a while?
IT MIGHT BE NEUROPATHY This could be a multitude of things, claudication, spinal stenosis.... go see your doctor to get a more specific diagnosis as this cannot be fully assessed with one symptom.
What connects the Neurons in the brain at the intersection?
Synapses are connections between neurons through which "information" flows from one neuron to another.
