NERVOUS SYSTEM SPECIAL SENSE
CEREBRUM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In the primary somatosensory area, which part of the body has a large area?
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Thigh
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face
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Foot print
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Organ viscera
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Explanation:
Detailed explanation-1: -The primary somatosensory cortex (SI) is located in the anterior part of the parietal lobe, where it constitutes the postcentral gyrus.
Detailed explanation-2: -This is because the amount of primary somatosensory cortex is directly related to the sensitivity of a body area and the density of receptors found in different parts of the body. The areas of skin with the higher density of receptors (like the face, hands and fingers) have more cortical tissue devoted to them.
Detailed explanation-3: -Because lips are that part of skin which can feel the sensations such as much heat, pressure, etcetera greatly. And it covers the greatest amount of tissues in somatosensory cortex.
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