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MSH of pars intermedia of middle pituitary is responsible for [1988]
- a)darkening of skin in lower vertebrates
- b)Light colouration of skin in lower vertebrates
- c)Both A and B
- d)Darkening of skin in human beings
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
MSH of pars intermedia of middle pituitary is responsible for [1988]a)...
Melanocyte-stimulating hormone (MSH) or Melanotropin is secreted by the intermediate lobe of adenohypophysis (pars intermedia) of pituitary gland in mammals (other than man) so named ‘intermedin’. In lower vertebrates, it targets chromatophores & does wider distribution of the melanin grannules in chromatophores, so that the skin colour darkens. In birds & human beings and other mammals its role is uncertain but in man it is probably responsible for bronzing of skin, moles etc.
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MSH of pars intermedia of middle pituitary is responsible for [1988]a)...
Function of MSH of Pars Intermedia in Lower Vertebrates
Darkening of skin in lower vertebrates
Melanocyte-stimulating hormone (MSH) is a hormone produced by the pars intermedia of the pituitary gland in lower vertebrates. It stimulates the melanocytes, which are the cells responsible for producing melanin, the pigment that gives color to the skin, hair, and eyes.
When MSH binds to melanocyte receptors, it triggers the production and release of more melanin. This leads to darkening of the skin, which helps lower vertebrates to camouflage and protect themselves from predators.
In certain lower vertebrates, MSH also stimulates the melanocytes to produce a special type of melanin called pteridines. Pteridines are fluorescent pigments that absorb ultraviolet light and emit it as blue or green light. This helps lower vertebrates to attract mates, communicate, or deter predators.
Function of MSH of Pars Intermedia in Human Beings
Darkening of skin in human beings
In human beings, the pars intermedia also produces MSH, but its role is not well understood. Some studies suggest that MSH may play a role in regulating the immune system, appetite, and sexual behavior.
However, MSH has been found to have a direct effect on human skin cells, including melanocytes and keratinocytes. It has been shown to increase the production of melanin, which can lead to darkening of the skin.
This effect of MSH on human skin cells has led to the development of synthetic MSH analogues for use in tanning products. However, these products are controversial and can have harmful side effects.
Conclusion
In summary, MSH of pars intermedia is responsible for the darkening of skin in lower vertebrates by stimulating the production of melanin. In human beings, MSH also has an effect on skin cells, but its role is not well understood.
Darkening of skin in lower vertebrates
Melanocyte-stimulating hormone (MSH) is a hormone produced by the pars intermedia of the pituitary gland in lower vertebrates. It stimulates the melanocytes, which are the cells responsible for producing melanin, the pigment that gives color to the skin, hair, and eyes.
When MSH binds to melanocyte receptors, it triggers the production and release of more melanin. This leads to darkening of the skin, which helps lower vertebrates to camouflage and protect themselves from predators.
In certain lower vertebrates, MSH also stimulates the melanocytes to produce a special type of melanin called pteridines. Pteridines are fluorescent pigments that absorb ultraviolet light and emit it as blue or green light. This helps lower vertebrates to attract mates, communicate, or deter predators.
Function of MSH of Pars Intermedia in Human Beings
Darkening of skin in human beings
In human beings, the pars intermedia also produces MSH, but its role is not well understood. Some studies suggest that MSH may play a role in regulating the immune system, appetite, and sexual behavior.
However, MSH has been found to have a direct effect on human skin cells, including melanocytes and keratinocytes. It has been shown to increase the production of melanin, which can lead to darkening of the skin.
This effect of MSH on human skin cells has led to the development of synthetic MSH analogues for use in tanning products. However, these products are controversial and can have harmful side effects.
Conclusion
In summary, MSH of pars intermedia is responsible for the darkening of skin in lower vertebrates by stimulating the production of melanin. In human beings, MSH also has an effect on skin cells, but its role is not well understood.
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Community Answer
MSH of pars intermedia of middle pituitary is responsible for [1988]a)...
Its A darkening of skin in lower vertebrates....while its role in humans is not significant.... as it is merged with adenohypophysis....
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MSH of pars intermedia of middle pituitary is responsible for [1988]a)darkening of skin in lower vertebratesb)Light colouration of skin in lower vertebratesc)Both A and Bd)Darkening of skin in human beingsCorrect answer is option 'A'. Can you explain this answer?
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MSH of pars intermedia of middle pituitary is responsible for [1988]a)darkening of skin in lower vertebratesb)Light colouration of skin in lower vertebratesc)Both A and Bd)Darkening of skin in human beingsCorrect answer is option 'A'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about MSH of pars intermedia of middle pituitary is responsible for [1988]a)darkening of skin in lower vertebratesb)Light colouration of skin in lower vertebratesc)Both A and Bd)Darkening of skin in human beingsCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for MSH of pars intermedia of middle pituitary is responsible for [1988]a)darkening of skin in lower vertebratesb)Light colouration of skin in lower vertebratesc)Both A and Bd)Darkening of skin in human beingsCorrect answer is option 'A'. Can you explain this answer?.
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