Kev tshem tawm vs kev tso tawm
Kev tshem tawm yog txheej txheem uas cov khoom pov tseg thiab cov khoom tsis zom tau raug tshem tawm ntawm lub cev. Kev tshem tawm tuaj yeem suav tias yog ib txoj hauv kev tshem tawm, tab sis nws tsuas yog cuam tshuam nrog kev tshem tawm cov khoom pov tseg hauv metabolic.
Excretion yog dab tsi?
Excretion yog txheej txheem uas cov khoom pov tseg uas tsim tawm hauv lub cev raug tshem tawm ntawm lub cev. Muaj 3 lub cev tseem ceeb hauv tib neeg lub cev uas koom nrog hauv kev tso tawm. Lawv yog lub raum, lub ntsws thiab daim tawv nqaij. Lub ntsws pab tshem tawm carbon dioxide tawm ntawm lub cev thiab daim tawv nqaij tshem tawm hws los ntawm evaporation. Nitrogenous khib nyiab yog tawm ntawm lub cev thiab excretion yog tshem tawm cov pov tseg uas ua los ntawm cov metabolism hauv lub cev. Muaj ntau cov khoom pov tseg tshuaj lom yog tsim thaum lub sij hawm metabolism. Yog tias tsis tau tso tawm, nws yog qhov nyuaj los tswj cov tshuaj muaj pes tsawg leeg hauv lub cev thiab rau cov txheej txheem metabolic tshwm sim. Cov khoom pov tseg uas tawm hauv lub cev yog ammonia, urea, uric acid, kua tsib xim thiab carbon dioxide. Kev tshem tawm nitrogenous pov tseg yog hu ua nitrogenous excretion. Osmoregulation yog kev saib xyuas ntawm lub siab osmotic nyob rau hauv lub cev los ntawm kev tswj cov dej thiab ion concentration. Nws yog ib qho tseem ceeb los tswj cov ions xws li sodium ions, potassium ions, calcium ions thiab chloride ions. Nitrogenous khib nyiab yog tsim los ntawm kev puas tsuaj ntawm cov proteins, nucleic acids thiab ntau cov amino acids. Cov khoom pov tseg nitrogen tam sim ammonia yog muab los ntawm NH 2 tsim thaum lub sij hawm cov protein metabolism. Ammonia yog tshuaj lom heev. Yog li ntawd, nws yuav tsum tau muab tshem tawm ntawm lub cev los yog hloov mus rau urea los yog uric acids, uas tsis muaj teeb meem. Qhov tseeb ntawm cov khoom excretory yog txiav txim siab los ntawm qhov chaw nyob ntawm tus tsiaj, tus nqi ntawm cov dej muaj rau tus tsiaj, qib ntawm kev tswj dej poob, muaj lossis tsis muaj qee yam enzymes. Protozoans thiab coelenterates tsis muaj cov kab mob excretory. Flat worms muaj cov nplaim hluav taws. Annelids muaj metanephridia. Kab thiab qee cov arthropods muaj malpighian corpuscles. Crustaceans muaj cov qog ntsuab thiab cov qog maxillary. Vertebrates muaj raum.
Kev tshem tawm yog dab tsi?
Kev tshem tawm suav nrog kev tshem tawm cov khoom noj uas khib nyiab thiab indigestible ntawm lub cev. Kev tshem tawm suav nrog kev tshem tawm. Defecation yog tshem tawm cov khoom indigestible. Cov quav yog tsim nyob rau hauv txoj hnyuv loj. Nws yog yellowish xim av semi khoom thiab xa tawm los ntawm lub qhov quav. Kev tswj ntawm qhov quav yog los ntawm kev hloov tus cwj pwm. Feem ntau lub qhov quav yog khoob. Cov ntsiab lus nyob rau hauv sigmoid nyuv raug yuam mus rau lub qhov quav los ntawm kev txav mus los. Nyob rau hauv lub qhov quav, cov hlab ntsha xaus nyob rau hauv cov phab ntsa yog stimulated los ntawm stretch. Nyob rau hauv cov me nyuam mos defecation tshwm sim los ntawm reflex action (involuntary). Nyob rau hauv teb rau distention ntawm lub qhov quav los ntawm quav, cov hlab ntsha xaus nyob rau hauv cov phab ntsa yog stimulated, thiab qhov quav sphincter opens, defecation yuav siv qhov chaw. Tab sis nyob rau hauv cov neeg laus nws yog nyob rau hauv kev yeem tswj. Lub paj hlwb tuaj yeem cuam tshuam qhov reflex kom txog thaum lub sijhawm ntawd, vim nws yooj yim rau defecate.
Dab tsi yog qhov txawv ntawm Kev Tso Tawm thiab Tshem Tawm?
• Kev tshem tawm tsuas yog hauv kev tshem tawm cov khoom pov tseg hauv lub cev, qhov kev tshem tawm yog koom nrog kev tshem tawm cov khoom pov tseg thiab cov khoom noj tsis txaus ntawm lub cev.
• Kev tshem tawm suav nrog kev tshem tawm cov khoom noj tsis txaus ntawm lub cev tab sis kev tso tawm tsis cuam tshuam nrog kev tshem tawm cov khoom noj tsis txaus los ntawm lub cev.
• digestive system koom nrog hauv cov txheej txheem tshem tawm, tab sis lub plab zom mov tsis koom nrog ua lub hauv paus tseem ceeb hauv cov txheej txheem excretion.
• Kev tshem tawm tuaj yeem suav tias yog txoj hauv kev tshem tawm, tab sis kev tshem tawm tsis tuaj yeem suav tias yog ib txoj hauv kev tawm.
