4urnan Anatomy and Physiology t Lab 84 EXERCISE 6 egumeery Systen I1. Since hair
ID: 143070 • Letter: 4
Question
4urnan Anatomy and Physiology t Lab 84 EXERCISE 6 egumeery Systen I1. Since hair color is deternined by pigment in the cortex und the hair shaft is dead, explain the fallacy of claims of a person's hair tarning white overnigh 12. Tattoos consist of ink injected into the skin. Do you think that the ink is injected into the epidermis or the dermis? What support do you give for your answer? 13. Approximately how long does it take for the epidermis to renew itselr? 14. What cell type produces a pigment that darkens the skin? ich one of the three layers (epidermis, dermis, hypodermis) is not part of the integument? Circle the correct answer 16 A subcutancous injection is inserted in the hypodermal or subcutancous tissue. Based on structures found in the hypodermis and not in the epidermis, why is this a preferred area for adminisering an injection? 2 Whs nitegamemuey stane 8. What part of the hair is found on the outside of the skin? 9. What does a piloerector muscle do? D. Circle the correct answer. The outermost portion of the hair is known as the a cuticle. b. lunula. crxx. d. medulla.Explanation / Answer
Ans:
11)Radical change into the hair color occurs in to hair root beacause of sudden shock. It will take time grow out so hair turns to white. therefore it takes longer time than the overnight.
12) Tattoos consist of ink that will injected ino to the dermis because its injected down side of your skin and the dermis is located below of that. If it was injected into the epidermis the tattoo would cast off and the tattoo would disappear in a weeks.
13) Approximately 6 weeks it will take for the epidermis to renew itself.
14) Melanocytes which produces melanin pigment to protect the skin layer from the damaging effects of ultraviolet radiation.
15) Integument is not consist of hypodermis.
16) First main thing is that blood vessels are present in to the hypodermis and not in dermis and second thing is that this layer will allow the material to flow into vessels.
17) The sebaceous glands secrete sebum which is type of oil.
18) Hair shaft is found on the outside of the skin.
19) Pilorecepator contracts and pulls or stretch the hair upright when response of fear or cold get to person.
20) The outermost portion of a cross section of hair is known as the cuticle.
Hnece option (a) is correct.
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