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Which two characteristics of axons increases the speed of nerve impulse?
diameter and presence of myelination.....
Which travels quicker through the body a nerve impulse or a hormons?
a nerve impulse
What nerve initiates the SA node to initiate an impulse?
The sinoatrial (SA) node is innervated by the vagus nerve (parasympathetic) and sympathetic nerves. However, the sympathetic nerves play a more significant role in initiating an impulse in the SA node by releasing norepinephrine, which increases heart rate.
The neurotransmitters of a neutron enable a nerve impulse to do what?
Neurotransmitters in a neuron allow a nerve impulse to be transmitted from one neuron to another by crossing the synapse and binding to receptors on the receiving neuron. This triggers an electrical or chemical signal to continue the nerve impulse along the neural pathway.
What happens to a muscle when an electrical impulse from a nerve stops?
When the electrical impulse from a nerve stops, the muscle relaxes and returns to its resting state. This is because the nerve impulse initiates the release of calcium ions in the muscle cells, leading to muscle contraction. When the nerve impulse stops, the calcium ions are reabsorbed, causing the muscle to relax.
The material surrounding the axon that increases the speed of the nerve impulse is?
The material surrounding the axon that increases the speed of the nerve impulse is the myelin sheath. It is made of fatty substances and acts as an insulator, allowing for faster conduction of the electrical signal along the axon. Nodes of Ranvier are the gaps in the myelin sheath where the signal jumps between to speed up transmission.
Which two characteristics of axons increases the speed of nerve impulse?
diameter and presence of myelination.....
What is quicker a nerve impulse or a hormone?
nerve impulse
Which travels quicker through the body a nerve impulse or a hormons?
a nerve impulse
What nerve initiates the SA node to initiate an impulse?
The sinoatrial (SA) node is innervated by the vagus nerve (parasympathetic) and sympathetic nerves. However, the sympathetic nerves play a more significant role in initiating an impulse in the SA node by releasing norepinephrine, which increases heart rate.
How does a nerve impulse follow all or nothing principle?
How does a nerve impulse follow the all-or-nothing principle???
What pathway does a nerve impulse follow after initiated into a receptor?
nerve my a$$ nerve
Is an action potential necessary for a nerve impulse to occur?
Yes, an action potential is needed for a nerve impulse to occur.
Is a action potential necessary for a nerve impulse to occur?
Yes, an action potential is needed for a nerve impulse to occur.
What is a nerve impule transmitted by axons?
It is called a nerve impulse.
The neurotransmitters of a neutron enable a nerve impulse to do what?
Neurotransmitters in a neuron allow a nerve impulse to be transmitted from one neuron to another by crossing the synapse and binding to receptors on the receiving neuron. This triggers an electrical or chemical signal to continue the nerve impulse along the neural pathway.
What nerve receive the impulse?
receptors.
