RT Journal Article
T1 Development of digastric muscles in human foetuses: a review and findings in the flexor digitorum superficialis muscle
A1 Rodríguez Vázquez, José Francisco
A1 Jin, Zhe-Wu
A1 Zhao, P.
A1 Murakami, Gen
A1 Li, X.W.
A1 Jin, Y.
AB The digastricus and omohyoideus muscles are digastric muscles with two muscle bellies. An insertion tendon of the posterior belly becomes an intermediate tendon in digastricus muscles, whereas a single band-like muscle in omohyoideus muscles may later be interrupted by an intermediate tendon, possibly due to muscle cell death caused by mechanical stress. In human foetuses, an intermediate tendon provides the temporal origins of the tensor veli palatini and tensor tympani muscles. Some reptiles, including snakes, carry multiple series of digastric-like axial muscles, in which each intersegmental septum is likely to become an intermediate tendon. These findings indicate that many pathways are involved in the development of digastric muscles. A review of these morphologies suggested that the flexor digi­torum superficialis (FDS) muscle was a digastric muscle, although the intermediate tendon may not be visible in the surface view in adults. The present observations support the hypothesis that the proximal anlage at the elbow develops into a deep muscle slip to a limited finger, while the distal anlage at the wrist develops into the other slips. The findings suggest that, in the FDS muscle, the proximal and distal bellies of the embryonic digastric muscle fuse together to form a laminar structure, in which muscle slips accumulate from the palmar to the deep side of the forearm.
PB Polish Anatomical Society
SN 1644-3284
SN 0015-5659
YR 2018
FD 2018-06-06
LK https://hdl.handle.net/20.500.14352/109678
UL https://hdl.handle.net/20.500.14352/109678
LA eng
NO National Natural Science Foundation of China
DS Docta Complutense
RD 18 abr 2025