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dendrites
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Where are the nodes of a neuron located?
Between myelin segments surrounding the axon The axon of a neuron is the single long fibre which caries impulses away from the cell body. It is surrounded by a fatty layer, the myelin sheath, produced by Schwann cells arranged along the length of the axon. The gaps between the myelin sheath cells are called nodes of Ranvier. See http://en.wikipedia.org/wiki/Axon for more information and a diagram. easy answer between the myelin segments surrounding the axon b. between myelin segments surrounding the axon
Why do myelin covered neurons carry an action potential faster than an uncovered neuron?
Myelinated neurons are those with an axon covered by a sheath but with gaps exposed, kind of like marshmallows on a stick. The marshmallows are the sheaths, and the stick is the axon. The gaps between the sheaths are called the nodes of Ranvier. When an action potential arrives, it jumps over the areas covered with the sheath, landing and springing off the nodes of Ranvier. This is called saltatory conduction. It allows the electric signal (action potential) to travel more quickly along the axon. When an axon is not covered, the whole axon is exposed, meaning that the action potential has nothing to jump over. This results in a slower signal because it needs to travel the full length of the axon without skipping over any segments.
What two characteristics are highly developed to allow the neuron to perform this function of conducting the Action Potential?
I think your talking about the myelin sheath around the axon and also the nodes of ranvier which are basically gaps in the insulating myelin. These gaps allow the action potential to jump from uncovered spot to uncovered spot rather than traveling the full length of the axon which greatly speeds up reaction time.
Where is the synaptic gap located?
The synaptic gap isn't a region of the brain itself, but a term used to describe the tiny space between an axon terminal and the axon or tissue it is communicating with; so synaptic gaps are spread right throughout both the central and peripheral nervous systems.
What structure in the neuron helps to speed up the transmission of the action potential?
To speed up transmission of the action potential from where it originates (axon hillock) to where it ends (axon terminal), the action potential propagates by 'saltatory conduction' - and the structure that makes this possible is the insulating layer of myelin sheath that wraps around the axon, arranged in 'nodes' along its length. Technically, it's the gaps between the nodes (nodes of Ranvier) that cause the action to continually propagate and maintain its fast conduction velocity.
What are the gaps called where the axon membrane is exposed?
Nodes of Ranvier
What are the gaps between the myelin sheath along an axon?
Node of Ranvier
What is the fatty substance that speeds up transmission of impulses and surrounds the axon of a neuron?
The fatty tissue surrounding the axon of a neuron is called myelin.
Where are the nodes of a neuron located?
Between myelin segments surrounding the axon The axon of a neuron is the single long fibre which caries impulses away from the cell body. It is surrounded by a fatty layer, the myelin sheath, produced by Schwann cells arranged along the length of the axon. The gaps between the myelin sheath cells are called nodes of Ranvier. See http://en.wikipedia.org/wiki/Axon for more information and a diagram. easy answer between the myelin segments surrounding the axon b. between myelin segments surrounding the axon
What are the gaps in the myelin sheath that create non-insulated areas along an axon?
nodes (:I do not disagree with that answer, but I just want to point out that the nodes have a special name. They are called Nodes of Ranvier, named after the man that discovered them (so Ranvier is capitalized). C:
Why do myelin covered neurons carry an action potential faster than an uncovered neuron?
Myelinated neurons are those with an axon covered by a sheath but with gaps exposed, kind of like marshmallows on a stick. The marshmallows are the sheaths, and the stick is the axon. The gaps between the sheaths are called the nodes of Ranvier. When an action potential arrives, it jumps over the areas covered with the sheath, landing and springing off the nodes of Ranvier. This is called saltatory conduction. It allows the electric signal (action potential) to travel more quickly along the axon. When an axon is not covered, the whole axon is exposed, meaning that the action potential has nothing to jump over. This results in a slower signal because it needs to travel the full length of the axon without skipping over any segments.
Can maps be wrong?
Yes, the earth is round, and you cant make a sphere flat. It leaves gaps, so map makers have to improvise and fill in the gaps.
What two characteristics are highly developed to allow the neuron to perform this function of conducting the Action Potential?
I think your talking about the myelin sheath around the axon and also the nodes of ranvier which are basically gaps in the insulating myelin. These gaps allow the action potential to jump from uncovered spot to uncovered spot rather than traveling the full length of the axon which greatly speeds up reaction time.
Where is the synaptic gap located?
The synaptic gap isn't a region of the brain itself, but a term used to describe the tiny space between an axon terminal and the axon or tissue it is communicating with; so synaptic gaps are spread right throughout both the central and peripheral nervous systems.
What structure in the neuron helps to speed up the transmission of the action potential?
To speed up transmission of the action potential from where it originates (axon hillock) to where it ends (axon terminal), the action potential propagates by 'saltatory conduction' - and the structure that makes this possible is the insulating layer of myelin sheath that wraps around the axon, arranged in 'nodes' along its length. Technically, it's the gaps between the nodes (nodes of Ranvier) that cause the action to continually propagate and maintain its fast conduction velocity.
Where do ladybirds sleep?
Ladybirds sleep underneath fallen leaves and gaps in trees.
What is tesalation?
Tessellation: to form or arrange patterns of shapes in a layout that leaves no gaps or overlays. So basically, its a series of shapes that are put together leaving no gaps or any overlaps. for example, lots of squares put together would leave no gaps but a circle wouldn't work because if you put them together they leave gaps.
