0 a place where things, especially roads or railways, come together -- 联结点；枢纽；（公路的）交叉口；（铁路）联轨站
Hypotheses suggested range from a peripheral foreland basin setting to triple junction-determined depression, but more field-based studies are needed to validate the most appropriate model.
The sinus impulse is distributed through the plain working myocardium of the atrial walls to reach the atrioventricular junction.
Of these, 67 had a common atrioventricular orifice ("complete" defect) while the remaining 73 had separate orifices for the right and left junctions ("partial" defects).
The distinction between the two entities depends on whether the atrial septum walls off the left atrium from the atrioventricular junction.
In the others, 84 had two ventricular chambers, but with the atrioventricular junctions arranged so that one of the chambers was obviously rudimentary and incomplete.
The paracellular permeability was then disrupted using divalent-cation-depleted seawater solutions and the effect on septate junction structure was examined.
Tight junctions and microvilli localized at the trophoblastic surface were disrupted to a high degree.
After the formation of the fibrous atrioventricular junction, the ring becomes eventually located in the lower margin of the right atrial myocardium.
