Epidermis - ihe ọ bụ? Ọdịdị nke ahụ epidermis

Skin, dị ka ọtụtụ dermatologists, bụ a ndị mmadụ ngwa. Inwe multiple n'ígwé na a dịgasị iche iche nke ọrụ, hearty netwọk nke ọbara arịa na iche iche nke akwara anabata enye ya mkpa na nchebe nke a onye si na gburugburu ebe obibi ihe. Ọzọkwa, anụ ahụ na-arụkwa a nkwurịta okwu ọrụ, na-enwe ike na-enweta tactile ọmụma si n'èzí ụwa. Ka elu oyi akwa nke epidermis dị mkpa nanị dị ka a n'ibu mgbochi, ya bara uru dị ukwuu.

General ji mara epidermis

Layer nkerisi, maturing, na-anwụ anwụ na-ama sel ndị nwụrụ anwụ bụ epidermis. Gịnị ka ọ bụ? Nke a dum ákwà nke nwere otutu n'ígwé nke mkpụrụ ndụ ewepụtara otu ebe, ma ndokwa na ọkwa dị iche iche dabere na ogo nke maturation. The epidermis bụ nke mbụ mgbochi eluigwe na ala chere ihu ọ bụla nwere ize ndụ maka ahu nke gburugburu ebe obibi na-akpata.

Layered Ọdịdị: n'ígwé nke anụ

layered Ọdịdị nke anụ - 3 n'ígwé n'ịrụ dị iche iche ọrụ. Ihe kacha mkpa n'ime ndị a bụ dermal enwe ọbara arịa, na-anabata ya na uru. Ọzọkwa emi odude ke dermis ntutu. Na ha "nna nna", nakwa dị ka mbọ, bụ epidermis. Gịnị ka ọ bụ? Nke a agụụ mmekọ oyi akwa odude dị n'elu dermis ma na-arụ a na-echebe ọrụ, ọ bụghị naanị na mmekọrita ya, kamakwa dum organism. Little miri dermis bụ obere mkpa oyi akwa nke anụ - anụ ahụ, ebe abụba-agbakọ adipocytes.

Layered Ọdịdị nke ahụ epidermis

N'ala ala oyi akwa bụ basal nke Foto nwere mkpụrụ ndụ ike nke na nkerisi. N'ihi ha na e nwere mweghachi nke mebiri emebi mkpụrụ ndụ na replenishment nke furu efu agụụ mmekọ akpịrịkpa. Ọkpụrụkpụ nke basal oyi akwa melanocytes dị otu dum n'ịkpa umi nwa ink (melanin) chọrọ maka ultraviolet nchedo nke anụ.

Prickly oyi akwa odude n'elu basal na wuru n'ụdị ahịrị 3-8 nke ihe dị ndụ na-ama na-enweghị ike na-ekewa. Ha na-tinyere onye ọ bụla ọzọ site cytoplasmic protrusions inye n'ibu ike nke anụ. Na ebe nke anụ doro mpụga mmetụta ime ugboro ugboro, ọnụ ọgụgụ nke n'ígwé spiny mkpụrụ ndụ na-abawanye na 8-10 iberibe. Na ebe ndị a na e nweghị ajirija glands na ntutu: ụkwụ na aka. Na Ugboro mmebi ndị ọzọ akụkụ ụfọdụ nke n'ígwé nke epidermis nwekwara thickened na-etolite a callus.

Ozugbo n'elu spinous oyi akwa bụ granular, bụ nke nwere ọkara nwụrụ anwụ epidermal mkpụrụ ndụ. Ha organelles ida ike na-emepụta ike, ma-akpọkọtara a ịrịba ego nke tonofibrils. Granular oyi akwa esịnede naanị 1-2 cell n'ígwé gbakwasara yiri akpụkpọ elu.

Amamiihe oyi akwa a na-akpọ mkpụrụ ndụ kpamkpam nke na-enweghị organelles. Ha nzube - n'ibu nchedo nke anụ na gradual ikpochapu, unwu ala na stratum corneum. Nke ikpeazụ bụ nke elu ọnụ. Ọ bụ a Nchikota nwụrụ anwụ scaly mkpụrụ ndụ, nke bụ oké ihe mgbochi na pathogenic mmetụta.

Ọrụ nke epidermal mkpụrụ ndụ

Isi ọrụ nke epidermis bụ ihe e kere eke nke n'ibu, anụ ahụ, ndu na chemical mgbochi, delimiting esịtidem gburugburu ebe obibi site na ike na n'ezie pathogens. Ma, nke ahụ ọ bụghị ihe niile ọrụ na-egwuri site epidermis. Gịnị ka ọ bụ, na otú dị ka kọwara?

• Firstly, na n'elu oyi akwa delimits na gburugburu ebe obibi nke ahụ ahụ na-abụghị ụwa na-echebe ndị ahụ na maka ime ka leakage nke mkpa bekee na mmiri.
• Nke abuo, nke ọma na ọ na-echebe ndị epidermis megide ionizing corpuscular na-efegharị efegharị radieshon nke ala ike, na nke ahu na-eche ihu kwa ụbọchị.
• Nke atọ, epidermis nke anụ - a ọma chemical mgbochi gbochie penetration na absorption nke hydrophilic bekee. Na lipophilic (abụba-soluble) ha na-ọma webatara.
• Ndien akpatre na ndepụta, ma ọ dịghị obere mkpa ọrụ - ndu nchebe. E nwere nnọọ obere ego nke bacteria na fungi na ike ife efe ụmụ mmadụ site na akpụkpọ. Basic na-echebe ọrụ na-egwuri site epidermis. Gịnị ka ọ bụ? Nke a bụ a ọma n'ibu mgbochi na nanị adịghị ekwe ka na-a virus, bacteria, ero ma ọ bụ nje n'ime ahu, na-eme mbufụt e.

Enweghị melanocytes na sel ndị nwụrụ anwụ nke epidermis ọrụ na e emejuputa atumatu. Epithelial mkpụrụ ndụ na-eme ka a n'ibu mgbochi, na melanocytes - ngwa anya. Nke a pụtara na cuticle echebe megide mebiri na evaporation nke mmiri mmiri, na ink mkpụrụ ndụ - si ultraviolet radieshon. All a kwere ka nwoke imeghari ka ọnọdụ ndị na-eme na nkịtị ụwa. Mgbe niile, akpụkpọ kwere mmepe nke organism nke nwoke ghọrọ usoro, si na miri na imeri ala ahụ.

The isi atụmatụ nke epidermis

All n'ígwé nke anụ phylogenetically ghọrọ usoro maka ịnye ụfọdụ ọrụ. The epidermis bụ dermis e mere na-echebe megide n'ibu, anụ ahụ na chemical mmetụta. Ọ dị mkpa iji na-amachi ọnwụ nke ọmụmụ nke nwere ike ikusi si ya elu nanị mgbe secretion nke ajirija glands. Ọzọ usoro maka n'ahụ ọmụmụ leakage si aru ahu site na akpụkpọ dị.

Ọ bụrụ na anyị na-atụle epidermis si a ịchọ mma echiche, ndị doro anya bụ ndị na-esonụ bụ eziokwu. Nke a na anụ oyi akwa nwere ike enweghi wrinkles na scars, idụhe ọbara arịa. Ọ na kwadoro site na mgbasa nke bekee site na ọbara arịa nke dermis nke anụ. Ya mere ya naanị ịchọ mma nsogbu ndị na-esonụ: hyperkeratosis (thickened epidermis n'ígwé) na akpụkpọ ekpepụsị. Iguzogide a phenomena, na psoriasis, na ọgwụgwọ na-achọ ngwa nke ntecha.

Pathology nke epidermis na melanocyte

E nwere ọtụtụ ihe na edemede nke ọrịa na ike-ata ahụhụ epidermis. Gịnị ka ọ bụ na otú data-ekwu na-egosipụta, na-agụ dị n'okpuru. The mbụ na udi - ọrịa metụtara na ụba multiplication nke epidermal basal oyi akwa mkpụrụ ndụ. The ọrịa a na-akpọ psoriasis. E nwekwara a congenital ọnọdụ - ichthyosis, nke nwa na-ama mụrụ hyperkeratosis na bụghị viable. Nke abụọ otu nke ọrịa nke epidermis - ngwọta. Site epidermis pụrụ ịzụlite basal cell carcinoma na melanoma. Nke ikpeazụ, si n'aka si melanocytes.