primary constriction


Also found in: Medical.

primary constriction

[′prī‚mer·ē kən′strik·shən]
(cell and molecular biology)
References in periodicals archive ?
It is required for proper chromosome segregation in mitosis and meiosis and readily recognizable as the primary constriction of mitotic chromosomes.
For [i] the tongue is tensed in the front and the primary constriction is between the blade of the tongue and the alveolar ridge--right behind the front teeth.
Proximal to the primary constriction site, the umbilical cord was moderately edematous and disclosed additional less pronounced foci of attenuation.