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Large myelinated axons.
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∙ 11y ago
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What is the firing rate in a nerve?
It is the electrical impulse that operates the nervous system.
Does myelin sheaths slow down nerve impluses?
No, a myelin sheath speeds up the rate of nerve transmission.
Vagus nerveWhat is the effect of vagus nerve stimulation on the heartbeat?
Activation of the vagus nerve typically leads to a reduction in heart rate..
What gland has the highest rate of mitosis?
holocrine
Which country has the highest natural increase?
Niger has the highest natural increase rate in the world
What cranial nerve Transmits motor impulses that affect heart rate?
Optic nerve
What is the firing rate in a nerve?
It is the electrical impulse that operates the nervous system.
Which of the following does not factor into the rate of impulse propagation?
Whether or not the impulse begins in the CNS influences the time necessary for a nerve impulse to be transmitted.
If A nerve impulse travels through your nervous system at an avg rate of 132 m per s How much time does it take for an impulse a distance of 1.49 m to reach your brain?
11 mS
Define angular impulse?
Angular impulse is defined as the rate-of-change of the angular acceleration.
Describe how the nerve impulse travels in the heart?
The brain can influence the heart in two ways. Sympathetic and parasympathetic stimulation. Parasympathetic stimulation of the heart is through the vagus nerve. Sympathetic stimulation of the heart is via cervical and thoracic splanchnic nerves. The heart has its own pacemaker cells, so the brain only changes the rate and contractility of the heart.
Do the vagus nerve increase heart rate?
it decreased heart rate , since vagus nerve innervate parasympathetic never and we know parasympathetic nerve reduce heart rate.
Is the otoliths responsible for static equilibrium?
when the head moves, the otoliths move in response to variations in gravitational pull. As they deflect different hair cells, they trigger hyperpolarization or depolarization of the hair cells and modify the rate of impulse transmission along the vestibular nerve
What can cause synapse to not function correctly?
An abnormally thin dendritic spine can yield poor neural impulse conduction; and drugs like LSD which mimic neurotransmitters may "clog" receptors & cause continued activation, I think. I suspect there could also be problems with the PRODUCTION of neurotransmitters or with the conveyance of vesicles containing NT to the synapse. Synapses are spaces or junctions between two neurons. The principle of synapse works on mechanism of neuro-transmitters and neuro-inhibitors. When a nerve impulse reaches the end of one neuron to travel to the next one, at that moment acetylcholine is produced in the synapse. Acetyl choline being a neurotransmitter helps to transmit the nerve impulse. Right after the nerve impulse has passed through the synapse, a neuroinhibitor such as cholinesterase si produced to stop the action of acetylcholine. At a particular synapse, these two chemicals are produced at a very high rate. This is how a nerve impulse works. But suppose if the production of these two chemicals is affected, the synapse will not function properly.
What happens to your heart rate when you innervate your vagus nerve?
Stimulation of the vagus nerve decreases heart rate. The vagus nerve is an important part of the parasympathetic nervous system.
Does the vagus nerve carry impulses that increase heart rate?
Does the vagus nerve carry impules that increase the heart rate
Why is the nerve releases acelycholine to reduce heart rate?
The peripheral autonomic nerve releases acelycholine to reduce the heart rate.
