An anatomical study on interventricular septum of postmortem hearts of adult Bangladeshi people.

To study the thickness of interventricular septum (both muscular and membranous parts) of adult Bangladeshi people, fifty postmortem hearts were collected, fixed in 10% formol saline and examined. The thickness of both muscular and membranous parts of the septum was measured. Among fifty hearts, thirty-six were collected from male and fourteen from female cadavers. All hearts were collected from medicolegal cases. The findings were compared between male and female cadavers of our country as well as with the findings of the western countries. The findings suggest that in female, the thickness of both muscular and membranous parts of the septum was less than that of male though there was no significant difference statistically (P>0.05). The findings were compared with the findings of other workers and not so much variation was found. There was no available data regarding the thickness of the membranous part of the septum to compare.

An anatomical study on pyramidal lobe of thyroid gland in Bangladeshi people.

The study was done to see the incidence of pyramidal lobe of thyroid gland including its position, attachment, length and incidence of its association with levator glandulae thyroidae in Bangladeshi population. Sixty postmortem tissue blocks containing thyroid gland and its related neighbouring structures were collected from 48 male and 12 female cadavers of different age groups and fixed in 10% formol-saline solution. Gross and fine dissection was carried out to study the incidence of presence of pyramidal lobe, its attachments, length, breadth and association with levator gladulae thyroidae. In the present study, findings were compared with those of Western and Bangladeshi researchers. It was evident that, fifty percent of the thyroids possesses pyramidal lobe. Incidence was more in male (52.1%) than in female (41.7%). It also appeared from the observations that, this lobe was commonly situated on the left side. In the majority of cases (56.66%), base of the pyramidal lobes were attached to the upper border of the isthmus with or without encroachment on the adjacent part of the left lobe. The range of length and breadth of the pyramidal lobe was from 1.8 to 35mm and 1.3 to 19mm respectively. In 73.33% cases, pyramidal lobe was associated with levator glandulae thyroideae and in only 26.66% cases pyramidal lobe was found independently.