Changes or events occurring outside the body are 'stimuli'; the cells that monitor them are known as 'receptors'.
A sensory Neuron picks up the stimulus from the environment and changes it into a nerve impulse.
Yes, a stimulus needs to reach a certain threshold level of strength in order to generate a nerve impulse. This threshold is required to depolarize the cell membrane and initiate the action potential. If the stimulus is not strong enough to reach this threshold, no nerve impulse will be generated.
A sensory Neuron picks up the stimulus from the environment and changes it into 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.
The nerve responsible for relaying sensory information to the brain is the cranial nerve. Each cranial nerve is associated with a specific type of sensory input, such as vision (optic nerve) or taste (glossopharyngeal nerve).
A sensory Neuron picks up the stimulus from the environment and changes it into a nerve impulse.
Signals to which the body reacts.
Yes, a stimulus needs to reach a certain threshold level of strength in order to generate a nerve impulse. This threshold is required to depolarize the cell membrane and initiate the action potential. If the stimulus is not strong enough to reach this threshold, no nerve impulse will be generated.
The stimulus that you would use to study nerve physiology would be internal and external stimulus to the body. The study of the nervous system would help in analyzing the human anatomy.
acetylcholine
A sensory Neuron picks up the stimulus from the environment and changes it into 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.
all-or-none law is the principle that the strength by which a nerve or muscle fiber responds to a stimulus is not dependent on the strength of the stimulus. If the stimulus is any strength above threshold, the nerve or muscle fiber will give a complete response or otherwise no response at all
ophthalmoscopy a Stimulus
Well they are sent through the nervous system.
The nerve responsible for relaying sensory information to the brain is the cranial nerve. Each cranial nerve is associated with a specific type of sensory input, such as vision (optic nerve) or taste (glossopharyngeal nerve).
Potassium and Sodium