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Pupil is a window for the light to enter our eyes. When we are in a dim light a nerve impulse is generated to the brain to enlarge the pupil. Size of pupil is managed by the iris (coloured part of the eye). If excessive light is there, the pupil shrinks to a smaller size so that the eye's not damaged esp. the retina where the image of objects are formed
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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.
Where is the vestibulocochlear nerve situated?
The vestibulocochlear nerve, also known as the cranial nerve VIII, is situated in the inner ear. It consists of two parts: the cochlear nerve which is responsible for hearing, and the vestibular nerve which helps with balance and spatial orientation.
What is responsible for transmission of nerve impulse across a synapse?
NEUROTRANSMITTER is responsible for transmission of nerve impulses.Eg.dopamine,acetylcholine etc.
Is ventricular systole responsible for nerve impulse?
No, ventricular systole refers to the contraction of the ventricles in the heart. Nerve impulses originate from specialized cells called neurons in the nervous system. These impulses are responsible for transmitting signals throughout the body, including to the heart to regulate its activity.
What is quicker a nerve impulse or a hormone?
nerve impulse
Which part of the neuron is responsible for generating a nerve impulse?
The axon is responsible for generating and transmitting a nerve impulse. It is a long, slender projection of the neuron that carries the electrical signal away from the cell body towards other neurons or muscles.
Which travels quicker through the body a nerve impulse or a hormons?
a nerve impulse
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.
