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When an axon is not conducting a nerve impulse and there is more sodium outside the axon and more potassium inside the axon it is referred to as what?
When an axon is not conducting a nerve impulse and there is a higher concentration of sodium ions outside the axon and a higher concentration of potassium ions inside, it is referred to as the resting potential. During this state, the axon's membrane is polarized, with a negative charge inside relative to the outside. This resting potential is crucial for the generation of action potentials when the neuron becomes activated.
When an axon is not conducting a nerve impulse and there is more sodium outside the axon and more potassium inside the axon?
When an axon is not conducting a nerve impulse, it is in a resting state, characterized by a resting membrane potential. In this state, there is a higher concentration of sodium ions (Na⁺) outside the axon and a higher concentration of potassium ions (K⁺) inside. This difference in ion distribution is maintained by the sodium-potassium pump, which actively transports sodium out of the axon and potassium into it, creating a negative charge inside relative to the outside. This resting potential is crucial for the generation of action potentials when the axon becomes depolarized.
What influences the speed of a nerve impulse?
the diameter of an axon
What is the membrane of a nerve cell is comprised of?
Its main function is to propagate the action potential (the 'impulse') along the length of the axon.
Microscopic fiber that carries the nervous impulse along a nerve cell?
The microscopic fiber that carries the nervous impulse along a nerve cell is called an axon. Axons are long, slender projections of a nerve cell that transmit electrical signals away from the cell body to other neurons, muscles, or glands. These signals, known as action potentials, travel down the axon through a process called depolarization and repolarization.
When an axon is not conducting a nerve impulse and there is more sodium outside the axon and more potassium inside the axon it is referred to as what?
When an axon is not conducting a nerve impulse and there is a higher concentration of sodium ions outside the axon and a higher concentration of potassium ions inside, it is referred to as the resting potential. During this state, the axon's membrane is polarized, with a negative charge inside relative to the outside. This resting potential is crucial for the generation of action potentials when the neuron becomes activated.
What is the conducting unit of the nerve tissue?
The axon is the conducting part of the neuron. It conducts the impulse from the cell body to the terminals, where ion channels open in response to the impulse, mediators are activated, neurotransmitter crosses synapse and attaches at the post-synaptic membrane, opening the ion channels there and depolarizing the cell, and propagating the impulse towards another cell body via the post-synaptic cell's axon.
An electrical impulse moving down an axon is called what?
An electrical impulse moving down an axon is known as an action potential.
Which of the following does not factor into the rate of impulse propagation?
One factor that does not influence the rate of impulse propagation is the size of the neuron. The rate of impulse propagation is determined mainly by the myelination of the axon, the presence of nodes of Ranvier, and the diameter of the axon.
A nerve impulse starts at the dendrite then travels to the?
cell body, continues down the axon, and finally reaches the axon terminal. At the axon terminal, the impulse triggers the release of neurotransmitters to communicate with other neurons or muscles.
What is nother name for an impulse transmitter?
axon
Impulse generator and transmitter?
axon terminal
What acts as an impulse generator and transmitter?
axon
What carries an impulse away from neuron?
The axon.
What sends an impulse to a muscle or gland?
axon
Does the impulse cross the neuromuscular junction when a muscle contracts?
No, the impulse traveling down the axon ends at the axon terminal but causes the axon terminal to release neurotransmitters. The neurotransmitters diffuse across the synaptic cleft causing the sarcolemma of the muscle to initiate its own impulse.
What influences the speed of a nerve impulse?
the diameter of an axon
