Indicate whether each statement is true or false regarding the epidermis and ker
ID: 3474618 • Letter: I
Question
Indicate whether each statement is true or false regarding the epidermis and keratinization The most superficial layer is the stratum corneum and the dead squamous cells are filled with keratin. The most superficial layer is the stratum basale and the dead squamous cells are filled with keratin. Keratin is a lipid which limits water loss through the skin. As cells fill with keratin, the deep cuboidal cells change shape and become flat. As cells fill with keratin, they create intermediate strata and begin to dieExplanation / Answer
1.The most superficial layer is Stratum corneum and dead squamous cells are filled with keratin-TRUE
Epidermis is the protective outer covering of the skin. There are different layers for epidermis. The most superficial layer is stratum corneum or horny layer It has mature or dead keratinocytes containing keratin protein..This layer prevents the entry of pathogens as well as loss of fluids from the body.
2.The most superficial layer is stratum basale & dead squamous cells are filled with keratin-FALSE
Stratum basale is the basal layer and is the deepest layer of the five layers of epidermis .In this layer new xells are generated for renewal of epidermal layers of skin.
3.Keratin is a lipid which limits the water loss through the skin -FALSE
Keratin is a fibrous structural protein present in hair,nails,horn,and of epithelial cells in the outermost layers of the skin.It protects cells from damage.It is insoluble in water and other organic solvents.
4.As cells are filled with keratin the deep cuboidal cells change shape and become flat-TRUE
The deepest layer of skin stratum basale contain cuboidal cells that divide continously .The stratum basale is made up of basal keratinocyte stem cells which divide to form keratinocytes of stratum spinosum and migrate superficially. Cells as they go superficial changes to flat cells
5.As cells fill with keratin they create intermediate strata and begin to die -TRUE
.As the cells are filled with keratin they create the intermediate strata they stop dividing and starts to die
1.protection against abrasion contauns melanin which absorbs UVlight-SKIN
2.Protection against abrasion act as heat insulator protects eye against foreign objects-HAIR
3.Produce secretions that create an environment to unsuitable for growth of some microorganisms. -GLANDS
4.
4.Protects yhe tips of fingers and toes -NAILS
1.The antibiotics like Erythromycin and tetracycline used for acne can lead to
Aa.Some good bacteria are reduced.
b.Some bad bacteria are reduced.
c.Some new bacterial infections can begin.
d.Some bad bacteria can become resistant.
Antibiotics can kill both the good and bad bacteria.The prolonged use of antibiotics can cause the bad bacteria to achieve resistance against the antibiotics and become more strong infections.Reduction in the good bacteria will also can lead to new infections.