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The general name for a chemical released when a neural signal reaches a neural ending is neurotransmitter.
Which specific neurotransmitter is released depends on exactly which neuron has fired; some instances of specific neurotransmitters are: adrenaline (epinephrine), glutamate, GABA (gamma-aminobutyric acid), acetylcholine, dopamine, serotonin, & melatonin.
With respect specifically to a neuromuscular junction, and with minor corrections, another contributor wrote:
When the nerve impulse reaches the nerve ending calcium is allowed into the cell and the synaptic vesicles in the motor neuron fuse to the bottom of the axon terminal of the motor neuron where they release ACh(Acetylcholine) into the synaptic cleft. So in this particular instance, Acetylcholine is your answer.
What else can I help you with?
Which muscle trait is the ability to respond to a stimulus such as a nerve or hormone?
Muscle excitability is the ability to respond to a stimulus, such as a nerve signal or hormone, by generating an electrical impulse that leads to muscle contraction. This trait allows muscles to react to signals from the nervous or endocrine systems to produce movement.
Is a nerve message also called a synapse?
Nerve messages are called an impulse. Synapses are the space between two axons.
Where does a nerve impulse start?
A nerve impulse typically starts at the dendrites of a neuron, where it receives signals from other neurons or sensory receptors. These signals are then transmitted down the axon of the neuron to the axon terminals, where they can communicate with other neurons or target cells.
Which of the following types of nerve fiber possesses the fastest speed of impulse propagation?
Myelinated A fibers have the fastest speed of impulse propagation among nerve fibers.
The duration of a nerve impulse is approximately?
The duration of a nerve impulse is very short, typically around 1-2 milliseconds. This rapid transmission allows for quick communication between neurons and helps to coordinate various body functions.
What is quicker a nerve impulse or a hormone?
nerve impulse
When is acetycholine released?
acetylcholine is released from presynaptic neurons in response to a nerve impulse
Describe the path a nerve impulse travels throughout your body from stimulus to response?
Brain send the message via nerve impulses involving neurons which use the neuro-transmitter AcetylcholineAcetylcholine- a neurotransmitter released at the neuromuscular junction triggers a muscle action potential, which leads to muscle contraction
What is the path of a nerve impulse from your leg to your brain and back to your leg?
A nerve impulse travels from your leg to your brain through sensory neurons. Once in the brain, the impulse is processed, and a response is generated. The response travels back to your leg through motor neurons to initiate movement or action.
Why does the frog sciatic nerve give a graded response?
The frog schiatic nerve gives a graded response because the nerve is a bundle of axons and not a single axon (thus it does not show the all or none response of an axon-either generating an action potential or not). If one axon is generating an action potential then a small nerve impulse is witnessed, if all axons are simultaneously generating action potentials then a large nerve impulse is witnessed. Thus the nerve impulse is graded (it can be none, small, medium, large, larger, maximal).
Neurotransmitters are released from what end of an axon?
synaptic vesicles
Which travels quicker through the body a nerve impulse or a hormons?
a nerve impulse
How is a nerve message different from a hormone message?
A nerve message and a hormone message differ primarily in their speed and method of transmission. Nerve messages, also known as nerve impulses, are electrical signals that travel quickly along neurons, allowing for rapid communication within the nervous system, such as reflex actions or muscle contractions. In contrast, hormone messages involve chemical signaling through the bloodstream, where hormones are released by glands and travel to target organs. Hormonal communication is slower but has longer-lasting effects, regulating processes like growth, metabolism, and reproduction. While nerve messages are instantaneous and localized, hormone messages are slower and can affect the entire body.
What is the relationship between a stimulus and a nerve impulse?
The neuron is the functional portion of the central nervous system, carrying impulses to the designated location. Neurons also have the role of interpreting an impulse, and waiting for a response. Neurons fall under the category of sensory neurons, interneurons and motor neurons.
If all the nerve impulses are same then why their response is different?
Although nerve impulses are electrical signals that travel along nerves in the same way, the specific response can differ based on the type of nerve fiber involved, where the impulse is being sent, and the neurotransmitters released. Different nerve fibers may lead to different responses in the body due to variations in the pathways and connections in the nervous system. Additionally, the specific receptors and effector organs that the nerve impulses target can also influence the response.
Where does the nerve impulse travel from the reflex arc?
The nerve impulse typically travels from the sensory neuron to the spinal cord, where it is processed by interneurons, and then to the motor neuron to elicit a response from the effector organ or muscle.
What is the substance released at axon terminals?
The substance that is released at an axonal ending to propagate the nerve impulse to the next nerve or muscle is called
