1.Duplicated axillary arch muscles arising from the latissimus dorsi.
Sitthichai IAMSAARD ; Nongnut UABUNDIT ; Kimaporn KHAMANARONG ; Kittisak SRIPANIDKULCHAI ; Kowit CHAICIWAMONGKOL ; Malivalaya NAMKING ; Somsiri RATANASUWAN ; Porntip BOONRUANGSRI ; Wiphawi HIPKAEO
Anatomy & Cell Biology 2012;45(4):288-290
Many origins and insertions of an axillary muscular slip (also known as Langer's or axillary arch muscles) have been documented previously. In this report, we found duplicated axillary arch muscles (two variant muscular slips) originating from the inferolateral border of the right side latissimus dorsi muscle. Obviously, these axillary arch muscles can be distinguished as short and long muscular strips. While the origin was the same, the short muscular slip inserts into the fascia covering on the pectoralis minor, whereas the longer one inserts on/into the aponeurosis of pectoralis major. For the surgery in the axillary region, this rare variation should be considered a cause of surgical interventions.
Fascia
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Muscles
2.Ultrastructure of Spermatogenesis in the Testis of Paragonimus heterotremus.
Nongnut UABUNDIT ; Pipatphong KANLA ; Phongphithak PUTHIWAT ; Channarong ARUNYANART ; Kowit CHAICIWAMONGKOL ; Wanchai MALEEWONG ; Pewpan M INTAPAN ; Sitthichai IAMSAARD ; Wiphawi HIPKAEO
The Korean Journal of Parasitology 2013;51(6):669-676
Lung fluke, Paragonimus heterotremus, is a flatworm causing pulmonary paragonimiasis in cats, dogs, and humans in Southeast Asia. We examined the ultrastructure of the testis of adult P. heterotremus with special attention to spermatogenesis and spermiogenesis using scanning and transmission electron microscopy. The full sequence of spermatogenesis and spermiogenesis, from the capsular basal lamina to the luminal surface, was demonstrated. The sequence comprises spermatogonia, spermatocytes with obvious nuclear synaptonemal complexes, spermatids, and eventual spermatozoa. Moreover, full steps of spermatid differentiation were shown which consisted of 1) early stage, 2) differentiation stage representing the flagella, intercentriolar body, basal body, striated rootlets, and electron dense nucleus of thread-like lamellar configuration, and 3) growing spermatid flagella. Detailed ultrastructure of 2 different types of spermatozoa was also shown in this study.
Animals
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Male
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Microscopy, Electron, Scanning
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Microscopy, Electron, Transmission
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Paragonimus/*physiology/*ultrastructure
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Spermatogenesis
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Spermatozoa/ultrastructure
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Testis/ultrastructure