Piav: Phalanges, tus lej ntawm txhais tes, yog cov pob txha feem ntau ntawm cov ceg tawv. Humerus yog pob txha ntawm caj npab.
Dab tsi yog qhov cuam tshuam rau humerus?
Tus qis kawg ntawm humerus pob txha hu ua qhov distal, lossis "distal humerus." Lub distal humerus muaj pob txha mos ntawm qhov kawg ntawm nws, uas yog ib feem ntawm sab sauv ntawm lub luj tshib. Lwm cov pob txha uas ua rau hauv qab ntawm lub luj tshib yog lub ulna thiab lub vojvoog.
Humerus nyob qhov twg?
cov distal humerus yogqis kawg ntawm Humerus. Nws ua rau sab sauv ntawm lub luj tshib thiab yog lub spool nyob ib ncig ntawm lub forearm khoov thiab straightens.
2 pob txha tsuas yog cuam tshuam rau humerus yog dab tsi?
Qhov kawg ntawm lub humerus muaj ob qhov chaw sib txuas, uas koom nrog cov pob txha ulna thiab lub vojvoogntawm lub forearm los tsim lub luj tshib. Qhov ntau nruab nrab ntawm cov cheeb tsam no yog lub trochlea, ib tug spindle- los yog pulley-puab cheeb tsam (trochlea="pulley"), uas articulates nrog cov pob txha ulna.
Tus qauv ntawm humerus yog qhov twg tshaj plaws?
Lub distal humerus muaj ob kab ntawm nruab nrab thiab sab nraub qaum epicondylar ridges nyob rau ntawm lub distal humeral metaphysis thiab lub hauv paus articulating axis (trochlea). Qhov feem ntau distal ntawm kab sab nraud yog lub capitellum, thiab cov kab nruab nrab yog qhov tsis muaj qhov nruab nrab.epicondyle.