PATHOLOGY MCQ
NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A major organ in the brain that is a part of the nervous system.
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What your body does to a change or a signal.
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A change or a signal your body receives.
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None of the above
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Detailed explanation-1: -A stimulus is a change in the environment (either external or internal) that is detected by a receptor. Receptors transform environmental stimuli into electrical nerve impulses. These impulses are then transmitted via neurons to the central nervous system where decision-making occurs.
Detailed explanation-2: -Stimuli are always converted into electrical signals via transduction. This electrical signal, or receptor potential, takes a specific pathway through the nervous system to initiate a systematic response.
Detailed explanation-3: -Stimulus is an event or any change in the external environment that evokes a specific functional reaction in an organ or tissue. stimulus can be internal or external. Sense organs, such as the ear, and sensory receptors, such as those in the skin, are sensitive to external stimuli such as sound and touch.
Detailed explanation-4: -Afferent or sensory neurons receive stimuli from receptors in the skin, eyes, ears, nose, and tongue, as well as pain and other receptors in the internal organs. The central nervous system, which comprises the brain and spinal cord, receives sensory input.