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Action potential is nerve impulse triggered when a neuron reaches its threshold, or trigger point for firing. Threshold trigger point for a neuron's firing about negative 50 millivolts.
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To evaporate do you need a high or a low boiling point?
Evaporation begins when a substance reaches its boiling point.
What happen when you heat ice?
First the ice gets warmer, until it reaches its melting point. Then it turns into water. THen the water gets warmer, until it reaches its boiling point. Then the water evaporates as steam.
What happens when a solution reaches the saturation point?
Saturation is the point a solution reaches where no more solute will dissolve in the solvent.
What is the saturation point for citric acid and water?
citric acid reaches its saturation point after about 45 grams of citric acid and 50 ml of water
What happens to gas as it i cooled below 0 degrees C?
It continues to cool until it reaches it's boilng point. At which it will condense then cool further until it reaches it's melting point. It will then continue to cool until it's entropy is minized at absolute zero.
What is the receptor of a reflex arc?
Sensory receptor located at the distal end of a neuron or an associated sensory structure. When stimulated it creates a receptor potential, when that reaches its threshold, it will trigger 1 or more nerve impulses in the sensory neuron.
A neuron fires only when its membrane reaches what?
When it reaches the nerve impulse threshold, the next neuron will fire..
When an action potential reaches the end of a neuron it triggers the release of?
When an action potential reaches the end of a neuron, it triggers the release of neuotransmitters such as epinephrine (sympathetic) or achetylcholine (parasympathetic).
When an impulse reaches the end of a neuron it tiggers the releases of?
Neurotransmitters
The trigger zone of a neuron includes?
The axon hillock and the initial segment
What happens when an impulse reaches the end of an axon?
It reaches the synapse and sends neurotransmitters to start a new impulse to the next neuron
When a neuron reaches its threshold?
When a neuron reaches its threshold, it initiates an action potential. This is a brief electrical impulse that allows for communication between neurons. The action potential travels down the axon of the neuron to transmit signals to other neurons or cells.
What is the trigger point at which a neuron will fire called?
Its where there are a lot of sodium channels. Once the trigger zone is 'triggered' to threshold (from -70mV to -55mv), then an action potential occurs. trigger zone in MOTOR neurons are in the axon hillock and in SENSORY neurons, they're in the 1st unmyelinated area (first node of ranvier).
Light sensitive worker needed to receive visual images and transmit impules to the brain?
the image passes from neuron to neuron through neurotransmitters until it reaches the brain, where the neurotransmitters are read
What is pressure trigger?
A pressure trigger is a trigger for initiating assisted ventilation. A pressure trigger consists of a measuring pressure and starting assisted ventilation when the pressure reaches the desired level.
If a resting neuron is stimulated and there is an inward flow of positive charges into the cell the membrane potential will?
If a resting neuron is stimulated and there is an inward flow of positive charges into the cell, the membrane potential will depolarize, meaning the inside of the cell becomes less negative. This can trigger an action potential if the depolarization reaches the threshold level.
When neuron stimulated enough it?
When a neuron is stimulated enough, it reaches its threshold potential and fires an action potential. This action potential travels down the axon of the neuron, allowing for the communication of signals to other neurons or cells.
