Proximal vs Distal Convoluted Tubule
Tib neeg lub raum yog cov kabmob tseem ceeb nyob rau sab nraub qaum thiab muaj lub luag haujlwm rau ntau lub luag haujlwm tseem ceeb suav nrog kev pom, rov ua dua thiab tso tawm. Cov haujlwm no yeej ua tau los ntawm ib chav me me hu ua nephron; lub functional thiab structural unit ntawm lub raum. Nephron yog tsim los ntawm Bowman's capsule, proximal convoluted tubule, voj ntawm Henle, distal convoluted tubule, thiab sau duct. Proximal thiab distal tubules muaj cov qauv convoluted thiab tseem ceeb heev hauv kev tswj pH ntawm cov ntshav los ntawm reabsorption ntawm ions. Ob lub tubules no muaj cov qauv sib txawv uas txhawb nqa lawv txoj haujlwm yooj yim.
Nyeem qhov txawv ntawm cov ntsiab lus Distal thiab Proximal
Proximal Convoluted Tubule
Cov tubule sib ze txuas rau Bowmen's capsule thiab lub voj ntawm Henle. Nws sab hauv epithelium yog hloov dua siab tshiab rau ib tug txhuam boarder thiaj li yuav ua rau kom cov efficiency ntawm reabsorption. Cov tubule no yog lub luag hauj lwm rau reabsorb tag nrho cov as-ham rov qab mus rau hauv cov ntshav systemic los ntawm cov filtrate. Tsis tas li ntawd, nws tseem rov nqus ob feem peb ntawm NaCl thiab dej lim rau hauv Bowmen's capsule. Kev thauj khoom nquag ntawm Na + los ntawm cov lim dej thiab mus rau hauv cov hlab ntsha ib puag ncig tsav cov txheej txheem reabsorption.
Distal Convoluted Tubule
Distal convoluted tubule nyob rau hauv nruab nrab ntawm lub voj ntawm Henley thiab cov ducts. Nws tsis muaj txhuam boarder hauv nws lumen. Distal tubule pab tswj pH ntawm cov ntshav los ntawm kev tswj hwm H + ion concentration. Tsis tas li ntawd, kev tswj hwm ntawm calcium los ntawm cov tshuaj hormones yog muab tso rau ntawm qhov distal convoluted tubule.
Qhov txawv ntawm Proximal thiab Distal Tubule yog dab tsi?
• Txoj kab uas hla ntawm cov tubule ze ze yog qhov loj dua ntawm cov tubule distal.
• Epithelium ntawm proximal tubule muaj txhuam boarder, whereas ntawm lub distal tubule muaj ob peb luv microvili.
• Proximal tubule muaj qhov tsis xwm yeem lossis lub hnub qub zoo li lumen. Nyob rau hauv sib piv, distal tubule muaj zoo kawg nkaus puag ncig lumen.
• Cov tubule ze ze txuas rau Bowman's capsule thiab nephron voj (voj ntawm Henle), whereas distal tubule txuas nephron voj thiab sau duct.
• Distal tubule pab tswj pH thiab ions zoo li potassium, sodium, calcium cov ntsiab lus hauv cov ntshav, whereas proximal tubule tswj ntsev, dej, organic solutes (glucose thiab amino acids), poov tshuaj, urea, phosphate thiab citrate txheem..
