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Do nerve impulses travel down the internodal pathways from the av node?
No, nerve impulses travel down the internodal pathways towards the AV node, not from it. The internodal pathways conduct the impulse from the SA node to the AV node, assisting in the synchronization of the heart's electrical activity.
Do impulses move faster or slower along the nerve at lower temperatures?
Impulses move slower at lower temperatures because temperature affects the speed of nerve conduction by altering the rate of chemical reactions involved in transmitting the impulse. Cold temperatures slow down these chemical reactions, causing nerve impulses to travel more slowly.
In a neuron impulses move?
In a neuron, impulses move through electrical signals known as action potentials. These action potentials are generated when a neuron receives enough stimulation to reach a threshold, causing a rapid change in membrane potential. The action potential then travels down the length of the neuron's axon until it reaches the next neuron or target cell.
Where does the cell body send electrical impulses?
The cell body of a neuron, also known as the soma, sends electrical impulses down the axon. These impulses, called action potentials, travel along the axon to reach the axon terminals, where they trigger the release of neurotransmitters. These neurotransmitters then transmit signals to other neurons, muscles, or glands, facilitating communication within the nervous system.
Where do nerve impulses travel?
Nerve impulses travel up through nerves, into the spinal cord and into one of the different lobes of the brain depending on where the impulse comes from. For example, if the impulse comes from your ear, the impulse would travel to the temporal lobe.
How do the nerve impulses get from the sarcolemma plasmalemma into the individual muscle fiber?
Nerve impulses travel down from the neuron and cause ACh to be released at the axon terminal. If enough Ach binds to the receptors on the plasmalemma the action potential is tranmitted through the whole muscle fiber because Na+ enters the cell and depolarize it. The action potential travels along the T-tubules. These transmit it to the Sarcoplasmatic Reticulum which releases Ca2+ into the muscle fiber (as do the T-tubules themselves). The Ca2+ frees the bindingsite for myosin on actin so that contraction can occur.
What do action potentials travel down to cause muscle contraction?
Axon of neuron, sarcolemma, and T-tubules.
What effect will multiple sclerosis a degenerative disorder that cause myelin to disintegrate have on a person's nerve impulses?
They will slow down
What is the function of the tubules?
See this link for nice details...http://people.eku.edu/ritchisong/301notes3.htm In muscle contraction the transverse tubules transmit the muscle impulse into the inner cell.
Saltatory conduction refers to the conduction of impulses in?
It is the "skipping" pattern that impulses follow to travel down nerve axons.
What lobe has impulses traveling down the cranial nerve 2?
impulses travel down cranial nerve 2 to what lobe
What is electroneurography?
The measurement of the speed of conduction of impulses down a peripheral nerve.
What is epilepsy and why is dilantin useful in treating it?
it slows down brain impulses
What are chemicals that retard behavior by either speeding up or slowing down nerve impulses?
Chemicals that retard behavior by affecting nerve impulses can include depressants like alcohol, benzodiazepines, and barbiturates, which slow down nerve impulses. Stimulants like amphetamines and cocaine can speed up nerve impulses. These substances can alter brain function and behavior by modulating neurotransmitters in the brain.
Is there nervous tissue in the respiratory system?
Neural impulses cause diaphragm and chest cage to move down wards and outwards respectively so that air can move into lungs Cough reflex is mediated by nerve impulses/reflexes
What are located in the retina and convert the upside down image into electrical impulses?
Cornea
How do depressants slow down the transmission of nerve impulses?
they stop the signals travelling down the nerves by blokcing the synapses
