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Is an ankle jerk reflex somatic or autonomic?
Ankle jerk is somatic. It is the reflex action, in which the afferent. connecting and the efferent neurons are involved. Autonomic nerves do not supply the striated muscles.
Why are motor neurons also known as efferent neurons?
efferent neurons are just another name for motor neurons, indicating that they carry impulses from the brain (CNS) to the target cell. Similarly, the term 'afferent''can be used interchangeably with sensory as it describes the action of a neuron carrying impulses from the stimulis (which could either be internal or external) to the CNS.
What transmission of the depolarization wave along the neurons membrane?
Action potential
Which cell conducts an action potential?
neurons
What forms are afferent and efferent neurons transmitted?
Afferent neurons transmit sensory information from peripheral receptors to the central nervous system (CNS), typically in the form of action potentials generated by stimuli like touch, temperature, or pain. Efferent neurons, on the other hand, convey motor commands from the CNS to effectors, such as muscles and glands, also using action potentials. Both types of neurons communicate through synapses, where neurotransmitters facilitate the transfer of signals.
What transfers a signal from the afferent nerve to the efferent nerve?
Neurotransmitters are released from the terminal bouton of the afferent nerve, cross the synaptic cleft, and bind with receptors on the efferent nerve. If enough neurotranmitter binds to reach the minimum potential, an action potential is created and the signal moves down the efferent nerve.
What is usually the sites of the initial action potential in neurons?
Axon hillocks
What are the key factors that influence the generation and propagation of action potential in neurons?
The key factors that influence the generation and propagation of action potential in neurons are the balance of ions inside and outside the cell, the opening and closing of ion channels, and the threshold level of stimulation needed to trigger an action potential.
Why does the nerve action potential increase slightly when you add 1.0 V to the threshold voltage and stimulate nerve?
The action potential increases slightly because more neurons are being stimulated.
Is the action potential an all-or-nothing response in neurons?
Yes, the action potential is an all-or-nothing response in neurons, meaning that once a certain threshold is reached, the neuron will fire at full strength regardless of the strength of the stimulus.
Disturbances when will sensory neurons result in an action potential?
Disturbances to sensory neurons can cause depolarization of the neuron's membrane, reaching a threshold that triggers an action potential. This action potential then travels along the neuron's axon to the central nervous system, where it is processed and interpreted as a sensory experience.
Do action potential transmission is faster in myelinated neurons?
TRUE. Neurons with myelin (or myelinated neurons) conduct impulses much faster than those without myelin.
