Cov khoom zais los ntawm lub plab yog dab tsi?
Cov khoom zais los ntawm lub plab yog dab tsi?

Video: Cov khoom zais los ntawm lub plab yog dab tsi?

Video: Cov khoom zais los ntawm lub plab yog dab tsi?
Video: Qhov txaus ntshai ntawm tsob tshuaj nroj kas fes daj no yog dab tsi 2 June 2019 2024, Lub Xya hli ntuj
Anonim

Cov plab ua thiab zais ntau yam tshuaj tseem ceeb los tswj kev zom zaub mov zaub mov . Txhua yam ntawm cov tshuaj no yog tsim los ntawm exocrine lossis endocrine cells pom hauv mucosa. Cov khoom tseem ceeb ntawm exocrine plab yog plab kua txiv - sib tov ntawm cov hnoos qeev, hydrochloric acid, thiab zom zaub mov.

Hauv qhov no, lub plab zais dab tsi?

Mob plab Secretions Cov plab zais dej, electrolytes, hydrochloric acid, thiab glycoproteins, suav nrog mucin, qhov tseem ceeb, thiab cov enzymes (Daim duab 25-3). Daim duab 25-3. Cov zais zais cuam tshuam thiab cov tshuaj hormones koom nrog hauv kev sib xyaw thiab tso dej ntawm hydrochloric acid los ntawm cov hlwb parietal.

Ib yam nkaus, dab tsi ua rau HCl tso zis hauv plab? Gastrin ua rau ntawm parietal cells ncaj qha thiab tsis ncaj ib yam nkaus, los ntawm kev txhawb kev tso tawm cov tshuaj histamine. Kev tso tawm histamine yog qhov tseem ceeb tshaj plaws txoj cai tswjfwm kev ua haujlwm zoo ntawm zais zis ntawm plab acid nyob rau hauv plab . Nws tso tawm yog txhawb los ntawm gastrin thiab acetylcholine thiab txwv los ntawm somatostatin.

Tom qab ntawd, dab tsi ua rau lub plab zom mov?

Kev zais plab yog txhawb feem ntau yog peb yam tshuaj: acetylcholine (ACh), histamine, thiab gastrin. ACh yog zais los ntawm cov kab mob parasympathetic ntawm ob qho tib si luv thiab ntev reflex,. ml; txoj kev. Histamine yog paracrine zais zis los ntawm cov kab mob enteroendocrine hauv plab qog.

Cov kua txiv dab tsi tso rau hauv plab?

Ib qho tseem ceeb ntawm cov kua txiv hmab hauv plab yog pepsin . Pepsin yog lub hauv paus zom zaub mov hauv lub plab uas zom cov protein. Peb pom tias thawj lub cell tsim pepsinogen (daim ntawv tsis ua haujlwm ntawm pepsin ). Pepsinogen tau hloov pauv mus rau pepsin thaum cov kab mob parietal pom nyob rau hauv lub plab zom mov hydrochloric kua qaub.

Pom zoo: