0
What else can I help you with?
Which is the only cranial nerve to extend to the abdomen?
The vagus nerve (cranial nerve X) is the only cranial nerve that extends all the way down to the abdomen, providing parasympathetic innervation to organs in the chest and abdomen.
What eye movement is caused by the superior oblique?
Superior oblique is controlled by cranial nerve VI (Trochlear nerve). This muscle depresses the eye and moves it laterally. A person with damage to this cranial nerve will have difficulty looking down and to the side.
What is the thickest cranial nerve?
The scaitic nerve is the longest and largest nerve.
What is the significance of the node of Ranvier in the conduction of nerve impulses?
The node of Ranvier plays a crucial role in the conduction of nerve impulses by allowing for faster and more efficient transmission of electrical signals along the nerve fiber. This is because the gaps at the node of Ranvier help to regenerate the electrical signal, allowing it to travel more quickly down the nerve fiber.
How does the myelin sheath and synapse affect nerve impulses speed up or slow down?
The myelin sheath acts as an insulating layer that helps speed up nerve impulses by allowing them to "jump" between gaps in the sheath called nodes of Ranvier. This process, known as saltatory conduction, accelerates the transmission of nerve impulses along the axon. At the synapse, neurotransmitters are released to transmit signals between neurons. The efficiency of this process can also affect the speed of nerve impulse transmission.
Which is the only cranial nerve to extend to the abdomen?
The vagus nerve (cranial nerve X) is the only cranial nerve that extends all the way down to the abdomen, providing parasympathetic innervation to organs in the chest and abdomen.
What is the difference between ascending and descending impulses?
Ascending impulses refer to nerve signals traveling towards the brain, carrying sensory information from the body. Descending impulses, on the other hand, refer to nerve signals traveling from the brain down the spinal cord to control motor functions and movement in the body.
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.
What is electroneurography?
The measurement of the speed of conduction of impulses down a peripheral nerve.
Saltatory conduction refers to the conduction of impulses in?
It is the "skipping" pattern that impulses follow to travel down nerve axons.
What eye movement is caused by the superior oblique?
Superior oblique is controlled by cranial nerve VI (Trochlear nerve). This muscle depresses the eye and moves it laterally. A person with damage to this cranial nerve will have difficulty looking down and to the side.
What is the thickest cranial nerve?
The scaitic nerve is the longest and largest nerve.
Nerve impulses trAVel down the internodal pathways from the AV node?
No, SA Node
Does the Vagus nerve carry nerve impulses that decrease the heart rate?
The vagus nerve releases the neurotransmitter, aceytlcholine, that slows down the heart rate. It is not the nerve impulses per se that do this, rather it is the the release of transmitter and it's interaction with post-synaptic receptors that have this effect.
How do depressants slow down the transmission of nerve impulses?
they stop the signals travelling down the nerves by blokcing the synapses
Where do nerve impulses leave the neuron?
Nerve impulses are transmitted down the axon and leave the neuron via the terminal bouton at the synaptic interface, releasing neurotransmitters into the synaptic cleft to affect the post-synaptic cell..
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.
