c Merkel (actile) cells d dendritic cells c fibroblasts 30. Which layer of the e
ID: 3524726 • Letter: C
Question
c Merkel (actile) cells d dendritic cells c fibroblasts 30. Which layer of the epidermis contains melanocynes a stratum corneum h stratum granulosum c stratum basale e all of the above 31. Insensible perspiration is the loss of water through the skin's a epidermis b. hair follicles c. sweat glands d. capillaries e all of the above 32. Exposure to ultraviolet light causes the skin to increase the production of a carotene b. melanin d. keratin. e. elastin 33. glands secrete a substance rich in fatty acids into hair follicles. a. Apocrine sweat b. Merocrine sweat c. Sebaceous d. Arrector pili e Keratohyaline 34. Which of the following cells and their functions are correctly matched? a. Keratinocytes- provide sense of touch and pressure b. Melanocytes-protect cells in the dermis from damaging effects of sun's rays c. Basal cells- -divide to form keratinocytes d. Merkel cells- cause skin to be water resistant e. all are correctly matchedExplanation / Answer
29)most abundant cells in eidermis area
a) keratinocytes
They are most abundant cells theyare epiderma cells whichproduces keratin.90 percentage ofepidermal layer is formed of this cell.Keratinocytes are found in deepest in the superfciale r of skin.
30) c melanocytes
Itis foundin stratum basal This cells produce melanin pigment.Theyare derivedfro neural crest cells.melanin is packaged into form of small parcels.
31)c sweat glands
Insensible perspiration is also known as sweat .Here the liquid is actively secreated from from sweat glands which evaporated.
32)b melanin
Exposure to ultraviolet light causes the skin to increase production of melanin.It is formed by oxidation of tyrosine followed by polymerization.it is produced by melanocytes.
33)c sebaceous gland
Secreate a substance rich in fatty acid s into hair follicles.It is an exocrine gland .They lubricate the skin by secreating sebum.They are secreated into ducts .
34)b melanocytes
They protect the skin from damage.of sunrays by producingmelanin which protect the skin from sunrays.
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