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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
Where must All processing at the circuit level going up to the perceptual level must synapse in?
thalamus
Electrical change in the neuronal membrane that is transmitted along axon is?
Action potential is the term for an electrical change in the neuronal membrane transmitted along an axon. The axon is part of a nerve cell that conducts impulses.
No it's not it's just a ugly hairy thing on the body.
How can you get faster reflexes?
These are some good reflex exercises you can practice:
1. Woods Running - Run through any wooded area, dodging trees and navigating uneven terrain. The faster you go, the better practice it is.
2. Wall Ball - bounce a ball against a wall. Standing closer to the wall and throwing harder will make it more difficult. The best way is with an oddly shaped ball so the bounce is not predictable.
3. Slap a Friend - This one requires a partner. The partner holds his or her hands out and your put your hands on top of theirs and they try to slap the tops of your hands before you can pull them away. There are many variations of this game that can make it more difficult if you're creative enough.
Answer1st know what your strengths are: strategy, skill, speed, strength, etc..You can't have it all, know what your strengths are 1st and build upon that.
You can strengthen your lack in speed by training hard with a really good trainer!
Answerbe more alertOr, you can repeatedly use a variety of stimuli to enhance your prowess of you're reflexes
AnswerReflexes depend on three main factors: vision (sight), coordination (neuromuscular) and reaction time (neurological)The first can be educated and trained with specific exercises mainly training sudden change of depth or focus, lateral vision and "scanning". You can also add some Vitamin A to your nutrition.
The second can also be trained with specific exercises particularly "centering", balance and sudden response movements. A good nutrition will also keep your system sharp
The third can be trained with concentration exercises and the alternation of concentration and relaxation as well as exercising all your cognitive senses daily.
Once you have set a good training plan on all three factors, play games as i.e. throwing a tennis ball against a wall at short distance and go decreasing the distance daily.
What is the difference between synaptic and nerve impulse transmission?
Synaptic transmission is chemical, while nerve impulse or axonal transmission is electrical.
A plexus (from the Latin plectere,
meaning "braid") is an interwoven network of spinal nerves. There are four major plexuses on each side of the body: 1) the cervical plexus innervates the muscles of the neck, the skin of the neck, the back of the head, and the diaphragm muscle; 2) the brachial
plexus innervates the shoulder and upper limb; 3) the lumbar plexus innervates the muscles and skin of the abdominal wall; and 4) the sacral plexus innervates the buttocks and lower limbs. The nerves then divide into smaller branches.
Where do nerve impulses from the brain move to?
No there are many local loops. This is particularly true in the digestive system where the peristaltic contractions have many within gut circuits.
Sodium is a positive ion. As it enters the cell the sodium influx raises the membrane potential (voltage) in that area. By doing this at many different stages along the axon one after the other, this positive current flows down the axon as an action potential, transferring nerve impulses from one neurone to the other.
i dont no
Where on a neuron does an impulse start and end?
the impulse starts at the dendrites which is located near the cell body and ends at the synaptic terminals which are at the end of the axon.
How many cranial nerves carry both sensory and motor impulses?
Five cranial nerves are mixed or sensorimotor nerves:
- Trigeminal Nerve (V)
- Facial Nerve (VII)
- Glossopharyngeal Nerve (IX)
- Vagus Nerve (X)
- Accessory Nerve (XI)
Axon diameter increases noticeably at the nodes of ranvier What purpose does this serve?
the axonal diameter increases due to the myelin wraped tightly around the axon.
Do injections get rid of pinched nerves?
Nothing gets rid of a pinched nerve except surgery. Injections can ameliorate the pain but not fix the problem.
This is a very complex question. Essentially nerves transmit signals by maintaining a resting potential of -70mV across the cell membrane by keeping large molecular anions (negatively charged molecules) in the cell and actively transporting sodium (Na2+) out of the neurone (the nerve cell). When the neurone is stimulated by some neurotransmitter such as acetylcholine the receptor opens up Na2+ gateways in the membrane allowing Na2+ ions to enter the neuron partially de-polarising the neurone. If enough of these receptors are activated and gateways opened then depolarisation reaches a threshold level.
At this point voltage gated ion channel in the membrane open allowing Na2+ ions to rush in depolarising the call to around +30mV at which point voltage gated K+ ion channels open allowing these to rush out repolarising the cell. The cell then enters a brief refractory period where it will nolonger depolarise, this acts as a means to control signalling. The depolarisation occurs in a wave down the axon of the neurone. As the action potential reaches the synaptic knob of the axon voltage gated ion channels allow Ca2+ to enter. This causes exocytosis of neurotranmitters contained in vesicles into the synaptic cleft. These neurotransmitteres then attach to receptors the postsynaptic membrane and depending on whether the neurotransmitter is excitory such as acetylcholine or inhibitory like dopamine will allow sodium ions to enter depolaizing the call if excitory. Inhibitory neurotransmitters hyperpolaise the cell and prevent the neurone 'fireing'
What are the functions of the axon terminal button?
The terminal buttons are located at the end of the neuron and are responsible for sending the signal on to other neurons. At the end of the terminal button is a gap known as asynapse. Neurotransmitters are used to carry the signal across the synapse to other neurons.
What is the function of cyton in a neuron?
Cyton has a large,central nucleus surrouded by the cytoplasm.
