Lub luag haujlwm tseem ceeb ntawm tshuaj lom neeg
Ntau yam khoom siv khaws cia hauv lub zog tshuaj. Cov tshuaj sib txawv tsis yog tsuas muaj cov sib txawv thiab cov qauv sib txawv, tab sis tseem muaj cov tshuaj ua kom muaj zog sib txawv. Hauv kev siv tshuaj lom neeg, muaj ob qho tag nrho cov kev sib tawg ntawm cov tshuaj hauv cov tshuaj lom neeg thiab kev tsim cov tshuaj khi hauv cov khoom lag luam. Tom qab ntawd, qhov tshwm sim ntawm qee qhov tshwm sim tshuaj lom neeg yog seb lub zog tau nqus lossis tso tawm, uas nyob ntawm tag nrho lub zog ntawm cov tshuaj tiv thaiv nyob rau hauv tiam. Qhov txheeb ze ntawm tag nrho lub zog ntawm qhov khoom.