Average dimensions of the adult brain: Width?
-
150 mm/5.5
-
140 mm/5.5
-
120 mm/5.5
-
130 mm/5.5
B
Correct answer
Explanation
140 mm is correct. The average adult brain width is approximately 140 mm (about 5.5 inches). While there is natural individual variation, 140mm is the widely accepted average width measurement in anatomical studies. The brain's dimensions typically average around 140mm in width, 167mm in length, and 93mm in height.