cheeb tsam ntu ntu yog thaj tsam ntawm ob sab duabuas tau txais thaum cov khoom peb-seem - xws li lub tog raj kheej - yog hlais perpendicular rau qee qhov teev. axis ntawm ib qho chaw. Piv txwv li, ntu ntu ntawm lub tog raj kheej - thaum hlais mus rau nws lub hauv paus - yog lub voj voog.
Puas yog thaj chaw hla hla tib yam li lub vojvoog?
Yog li txhua yam koj yuav tsum paub, txhawm rau xam qhov chaw hla ntu, yog nws lub vojvoog. Lub square ntawm lub vojvoog, muab faib ua π, yuav tsum muab koj tus nqi ntawm qhov chaw hla. Chav tsev ntawm ntu ntu ntu yuav nyob ntawm qhov ntev chav siv rau kev ntsuas lub vojvoog.
thaj chaw hla ntawm lub cev yog dab tsi?
Nyob rau hauv cov leeg nqaij physiology, physiological cross-sectional cheeb tsam (PCSA) yog thaj tsam ntawm tus ntoo khaub lig seem ntawm cov leeg perpendicular rau nws cov fibers, feem ntau ntawm nws qhov loj tshaj plaws. Nws feem ntau yog siv los piav qhia txog kev cog lus ntawm cov nqaij leeg pennate.
Cov hlab ntsha twg muaj thaj tsam loj tshaj plaws?
Raws li thaj tsam ntawm ntu ntu nce, qhov nrawm qis dua. Cov hlab ntsha thiab cov hlab ntsha muaj qhov chaw me me thiab qhov siab tshaj plaws, qhovcapillaries muaj thaj tsam hla feem ntau thiab qis tshaj tshaj plaws. Lub vasculature kuj muab kev tiv thaiv.
Vim li cas capillaries muaj thaj tsam loj tshaj plaws?
Tag nrho cov ntu ntu ntu ntawm cov hlab ntsha yog qhovloj tshaj; yog vim li no cov ntshav tshaj tawm qeeb tshaj plaws los ntawm cov hlab ntsha(qhov no yog qhov tseem ceeb heev vim qhov no yog qhov chaw sib pauv khoom noj khoom haus thiab koj xav kom ntshav qeeb kom tso cai hloov pauv tsis yog maj dhau los).
