1. Why is important that epidermis serve as a barrier against UV rays, yet not block them out completely?2. Review the structure and function of the skin by explaining •the mechanisms involved in thermoregulation•variations in skin color•abnormal coloration of the skin (for example, cyanosis,jaundice, and pallor); and•the occurrence of acne.3. Do you think that humans derive any important benefit fromcontraction of the arrectores pilorum muscles? Justify your answer 4. The relative hairlessness of humans is unusual amongmammals. Why should it be that we have any hair at all?5.Compounds such as lead, zinc, and arsenic may accumulate inthe hair and nails. Chemical toxins from pesticides andpollutants may accumulate in the adipose tissue (subcutaneousfat) of the hypodermis. Discuss some of the possible clinicalsituations where this knowledge would be of importance.6.During the aging process, the skin becomes drier, wrinkled,and slower to heal. Knowing that these are normal structuralchanges, how would you advise a middle-aged person tosafeguard his or her skin as a protective organ? Critical-Thinking Questions1.Why is it important that the epidermis serve as a barrieragainst UV rays, yet not block them out completely?2.Review the structure and function of the skin by explaining(a) the mechanisms involved in thermoregulation;(b) variations in skin color;(c) abnormal coloration of the skin (for example, cyanosis,jaundice, and pallor); and(d) the occurrence of acne.3.Do you think that humans derive any important benefit fromcontraction of the arrectores pilorum muscles? Justify youranswer.4. The relative hairlessness of humans is unusual amongmammals. Why should it be that we have any hair at all?5.Compounds such as lead, zinc, and arsenic may accumulate inthe hair and nails. Chemical toxins from pesticides andpollutants may accumulate in the adipose tissue (subcutaneousfat) of the hypodermis. Discuss some of the possible clinicalsituations where this knowledge would be of importance.6.During the aging process, the skin becomes drier, wrinkled,and slower to heal. Knowing that these are normal structuralchanges, how would you advise a middle-aged person tosafeguard his or her skin as a protective organ?

Answer :: 1) The integumentary system consists of the skin and accessory structures like hair, nails…

Answered: Why is important that epidermis serve…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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1. Why is important that epidermis serve as a barrier against UV rays, yet not block them out completely? 2. Review the structure and function of the skin by explaining •the mechanisms involved in thermoregulation •variations in skin color •abnormal coloration of the skin (for example, cyanosis, jaundice, and pallor); and •the occurrence of acne. 3. Do you think that humans derive any important benefit from contraction of the arrectores pilorum muscles? Justify your answer 4. The relative hairlessness of humans is unusual among mammals. Why should it be that we have any hair at all? 5.Compounds such as lead, zinc, and arsenic may accumulate in the hair and nails. Chemical toxins from pesticides and pollutants may accumulate in the adipose tissue (subcutaneous fat) of the hypodermis. Discuss some of the possible clinical situations where this knowledge would be of importance. 6.During the aging process, the skin becomes drier, wrinkled, and slower to heal. Knowing that these are normal structural changes, how would you advise a middle-aged person to safeguard his or her skin as a protective organ?

Critical-Thinking Questions
1.Why is it important that the epidermis serve as a barrier
against UV rays, yet not block them out completely?
2.Review the structure and function of the skin by explaining
(a) the mechanisms involved in thermoregulation;
(b) variations in skin color;
(c) abnormal coloration of the skin (for example, cyanosis,
jaundice, and pallor); and
(d) the occurrence of acne.
3.Do you think that humans derive any important benefit from
contraction of the arrectores pilorum muscles? Justify your
answer.
4. The relative hairlessness of humans is unusual among
mammals. Why should it be that we have any hair at all?
5.Compounds such as lead, zinc, and arsenic may accumulate in
the hair and nails. Chemical toxins from pesticides and
pollutants may accumulate in the adipose tissue (subcutaneous
fat) of the hypodermis. Discuss some of the possible clinical
situations where this knowledge would be of importance.
6.During the aging process, the skin becomes drier, wrinkled,
and slower to heal. Knowing that these are normal structural
changes, how would you advise a middle-aged person to
safeguard his or her skin as a protective organ?

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