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Where is the relay neurone in the reflex arc?
The relay neuron is located in the spinal cord in a reflex arc. It connects the sensory neuron to the motor neuron, allowing for the reflex response to be processed and carried out quickly without involving the brain.
What do resting and action potentials depend on?
The resting and action potentials depend on the balance of charges of the area outside the neuron and inside the neuron. A resting potential is when the neuron is more negatively (approximately -70mv) charged than the area outside the neuron. The action potential occurs when sodium ions rush into the neuron, causing the polarity to be reversed. When there is no difference in charge between the area inside the neuron and the area outside the neuron, no action potentials can be started by that neuron.
Which neurons decide about the action for a certain stimulus?
Sensory neuron
How do action potentials move from one neuron to another?
The action potential stimulates the axon terminal to release its neurotransmitters. The neurotransmitters attach themselves to the dendrote of the next neuron, so that it will open its NA+ channels.
The fundamental cell type that conducts an action potential in the nervous system is a?
neuron
Where is the relay neurone in the reflex arc?
The relay neuron is located in the spinal cord in a reflex arc. It connects the sensory neuron to the motor neuron, allowing for the reflex response to be processed and carried out quickly without involving the brain.
How is the neuron carried messages from another neuron if there is a space between them?
axon and sypanes
Spontaneous firing rate of a neuron?
a periodic production of action potentials even without synaptic input
Can reflex actions be carried out without the involvement of a neuron?
No, reflex actions require the involvement of neurons to transmit signals from sensory receptors to the spinal cord and back to effectors (muscles or glands). Neurons are essential for the rapid response of reflex actions.
What do resting and action potentials depend on?
The resting and action potentials depend on the balance of charges of the area outside the neuron and inside the neuron. A resting potential is when the neuron is more negatively (approximately -70mv) charged than the area outside the neuron. The action potential occurs when sodium ions rush into the neuron, causing the polarity to be reversed. When there is no difference in charge between the area inside the neuron and the area outside the neuron, no action potentials can be started by that neuron.
What reflex does a a sensory neuron synapses directly on a motor neuron?
This type of reflex is known as a monosynaptic reflex. It involves a single synapse between the sensory neuron and the motor neuron in the spinal cord, leading to a rapid response to a stimulus without involvement of higher brain centers. An example of a monosynaptic reflex is the knee-jerk reflex.
What is the correct arrangement of a reflex arc?
Receptor → Sensory Neuron → Associative Neuron→ Motor division →Effectors
Why are motor neuron ofter referred to as the action cell?
it is often termed the action neuron because it tells the muscles what to do or how to react.
Which neurons decide about the action for a certain stimulus?
Sensory neuron
What structure in the neuron accelerates the transmission of the action potential?
The structure in the neuron that accelerates the transmission of the action potential is called the myelin sheath.
How do action potentials move from one neuron to another?
The action potential stimulates the axon terminal to release its neurotransmitters. The neurotransmitters attach themselves to the dendrote of the next neuron, so that it will open its NA+ channels.
The fundamental cell type that conducts an action potential in the nervous system is a?
neuron
