Current literature assumes that there are three palmar interossei. Nevertheless, in 1858 the German anatomist Henle has described a fourth palmar interosseous between the thumb and the index finger (palmar interosseous of Henle).unctionally, the palmar interossei act antagonistically to the dorsal interossei in the MCP (mnemonic: DAB = Dorsals ABduct, PAD = Palmars ADduct). However both muscle groups perform common functions, as they flex the fingers in the MCP and extend in the proximal and distal interphalangeal joints (PIP and DIP).
The volume of a human brain, otherwise known as cranial capacity, varies depending on several factors, such as age, environment, and body size. The volume is usually measured in cubic centimeters (cm 3 or cc).Modern humans have cranial capacities from 950 cm 3 to 1800 cm 3, but the average volume of a modern human brain is 1300 cm 3 to 1500 cm 3.Viktoriya Shchupak -- 2001.heir brains were about the size of those of present-day gorillas, about 350 to 450 cubic centimeters in volume, as compared with an average volume of about 1450 cubic centimeters in modern humans..
Based on more than 8000 autopsies of male and female patients without brain diseases the normal brain weight of adult males and females in relation to sex, age, body-weight, and body-height as well as Body Mass Index were calculated. The average brain weight of the adult male was 1336 gr; for the adult female 1198 gr.With increasing age, brain weight decreases by 2.7 gr in males, and by 2.2 gr in females per year. Per centimeter body height brain weight increases independent of sex by an average of about 3.7 gr.Body Mass Index is of minor importance and only relevant in males.Based on these data the independent variables, age and height, were for the first time combined in a nomogram for the calculation of brain weight.ased on more than 8000 autopsies of male and female patients without brain diseases the normal brain weight of adult males and females in relation to sex, age, body-weight, and body-height as well as Body Mass Index were calculated. The average brain weight of the adult male was 1336 gr; for the adult female 1198 gr.