Foramen magnum as a tool for sexual dimorphism: A cone beam computed tomography study.

Background And Objectives: (1) To evaluate dimensions of the foramen magnum (FM) among males and females and to establish its role in sexual dimorphism using cone beam computed tomography (CBCT). (2) To evaluate sagittal diameter, transverse diameter, area, and circumference of FM among males and females.

Materials And Methods: Two hundred and eighty CBCT scans (140 males and 140 females; age range, 20-80 years) were selected for this study.

Preliminary morphological and histochemical changes in rat spinal cord neurons following arsenic ingestion.

Aqueous sodium arsenite was administered in doses of 1.0, 1.5 and 2.