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chiasm

chiasm (kI´azm)

1. The crossing of intertwined chromosomes during prophase. 2. chiasma [G. chiasma]
Camper's c. tendinous c. of the digital tendons
optic c. a flattened quadrangular body in front of the tuber cinereum and infundibulum, the point of crossing or decussation of the fibers of the optic nerves; most of the fibers cross to the opposite side, some run directly forward on each side without crossing, some pass transversely on the posterior surface between the two optic tracts and others pass transversely on the anterior surface between the two optic nerves.chiasma opticum [NA] , optic decussation;
tendinous c. of the digital tendons crossing of the tendons, the passage of the tendons of the flexor digitorum profundus (flexor digitorum longus in the foot) through the interval left by the decussation of the fibers of the tendons of the flexor digitorum superficialis (flexor digitorum brevis in the foot).chiasma tendinum [NA] , Camper's c;

 

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