Observation of the number of human skeletal muscles
- VernacularTitle:人体骨骼肌肉数量的观察
- Author:
Lihua WANG
- Publication Type:Journal Article
- From:
Chinese Journal of Tissue Engineering Research
2007;0(06):-
- CountryChina
- Language:Chinese
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Abstract:
AIM: At present, there is not a unified understanding on the total quantity and distribution of skeletal muscles in a normal human body. In this paper, we arranged the number of human skeletal muscles by detailed anatomic observation and record of an adult male corpse to provide reference for future scientific research and teaching. METHODS: The experiment was conducted in the anatomical laboratory of Hebei Institute of Physical Education between October 2005 and March 2006. Two complete adult male corpses fixed by 40 g/L formaldehyde were given a detailed anatomic observation by removing the skin and subcutaneous tissue, and exposing the skeletal muscles of the whole body from superficial to deep layers. The initiation and end sites of muscles were isolated and the obvious muscle fibers were exposed to carefully observe and record the quantity of skeletal muscles. It was noticed that because the muscle fibers were less, when dissecting the mimetic muscle, the thin layer of skin and fewer subcutaneous tissues should be cut parallel to the skin with a blade as soon as the mimetic muscle scattered between subcutaneous tissue, but not isolate the muscle fiber from deep layer, which might remove the muscle fiber and subcutaneous, and lead no obvious muscle left. The sphincter muscle of some organs should be dissected from the superficial to the deep layer of the muscles. It was necessary to look up some data to supplement the muscles with less occurrence and unusual for corpse. RESULTS: There were 549 pieces muscles in the whole body of a normal person including 270 pairs muscles and 9 pieces of non-pair skeletal muscles such as orbicularis oris muscle, arytenoids muscle, diaphragma, interspinal muscles, sphincter muscle of anus and musculus sphincter urethrae. CONCLUSION: Although the muscles not found in the corpses are supplemented by looking up the data, it is necessary to further observe, study and discuss through different corpse specimens.
