Background: The surface of the developing human brain undergoes morphological changes with the formation of different sulci during the fetal period. During the first and second-trimester fetal brain surface remain smooth, and between the 28th and 30th weeks of gestation, new gyri and sulci appear due to rapid growth of the fetal brain. Aims and Objectives: To study the time of appearance of sulci in different surfaces of the fetal brain, which will help estimate the gestational age of the fetus from the specimen of the fetal brain. Materials and Methods: About 108 cerebral hemispheres from 54 fetal brains were examined in the Department of Anatomy, Medical College, Kolkata, West Bengal, in 1 year from December 2016 to December 2017. Among 54 fetal brains, 21 were museum specimens of the Department of Anatomy and Forensic Medicine of Medical College, Kolkata, and the rest were fetal cadavers. For brains from fetal cadavers, after brain removal, it was fixed in 10% formalin. Fetal brains were divided into two groups – a) brains from fetuses with bodyweight up to 1000 g with a weight gap of 100 g among the groups. b) brains from fetuses with body weight >1001 g with a weight gap of 250 g among the groups. Sulci in the superolateral, medial, and inferior surfaces of the fetal brain were noted carefully. Results: Comparing the findings of our study with the previous anatomical studies, it is found that we studied a large number of sulci in detail. When we compared the anatomical findings with the findings of USG or MRI it was found that there was 2–4 weeks delay between anatomical appearance and visualization of the same sulcus in fetal brain by imaging (USG and MRI). The development of cerebral sulci was proportional to the bodyweight of the fetus. Conclusion: Embryological appearance of sulci is a crucial important in the Anatomy and radiological study of brain and micro neurosurgery. The study is essential for estimation of the gestational age of the fetus also.

The mid arm circumference (MAC) is an anthropometric tool for measurement of nutritional adequacy and growth in the “under five’ paediatric age group. However in adolescent children it is important in rapid and mass surveys. The MAC was measured in 130 healthy school children (84 boys and 46 girls) of 12 – 14 years age of M.G.M’s Sanskar Vidyalaya, N-4 Cidco, Aurangabad using the girth of the arm at the midpoint between the acromial process of the scapula and the lateral epicondyle of the humerus. The study aims to measure the MAC in an adolescent population and compare them with data from previous studies in an attempt to formulate a “normal” range for comparison with similar studies. In the present study, the MAC for 12 year old children varies from 18.81- 20.7cm, for 13 year old children from 20.4- 20.82cm and 14 year old children from 21.12- 21.97cm.The present study gives us a range of ~ 19 – 22cm as the range of MAC in adolescent boys and girls. In spite of several studies on the MAC in adolescents, no consensus has been reached regarding the cut off points for determining under nutrition and overweight. Further studies are required to publish the normal cut off ranges of MAC for the adolescent population of our country.

Background: Height is an important parameter of human in anthropology and forensic medicine. We can measure the height of an individual from forearm length (FAL). In this study, we found the relationship between FAL and height in medical students. Aims and Objective: The objective of the study was to find co-relation between FAL and height of the individuals (male and female medical students) and to obtain regression formula to determine the height from FAL. Materials and Methods: Height and FALs were measured in 200 medical students of 17–22 years age (100 males and 100 females) of N.R.S Medical College, Kolkata. For finding, the relationship between height and FAL linear regression analysis was used. Results: In our study, average height of the female students was 158.64±5.28 cm, whereas in male students average height was 168.97±6.33 cm. Mean FAL has been 26.63±1.72 and 23.72±1.44 cm, respectively, in case of male and female students. Difference of the mean height and mean length of forearm values between female and male students was statistically significant. The correlation coefficient (r) between height and FAL of dominant side has been, respectively, +0.93, +0.96, and +0.97 in case of male, female, and total students. According to the linear regression, there was a relation between height and FAL. Conclusion: From our study, it is evident that we may estimate the height of a person from measurement of FAL. In future studies may be carried out to estimate height of an individual from other body parameters also.