Knowing the distribution of the Flexor digitorum superficialis muscle nerve's branches, its origin levels and points of penetration, it makes the treatment of these lesions easier, mainly in cases of surgery where without the adequate anatomic knowledge the nerve's branches could be even more damaged. We dissected 10 corpses fixed with formaldehyde, therefore analyzing in 20 forearms that were measured with the help of a common ruler. We used as reference the articular lines of the elbow and wrist. In our results, we could see that in the left upper limb, the majority of the median nerve's branches (29.7%) began in the distal half of the forearm's middle third part and the majority of median nerve points penetration (30.3 %) began in the proximal half of the forearm's proximal third part. In the right upper limb, the majority of the median nerve branches (25.7%) began in the arm's distal third part and the majority of median nerve penetration (30.5%) began in the distal half of the forearm's proximal third part. Some anatomic variations were observed.