Morphological on the Macroscropic Development of the Stomach in the Long-tailed Macaque (Macaca fascicularis) during Pre Natal and Post Natal Period

Erdiansyah Rahmi


This research was conducted with aim to reveal the morphological changes on the stomach in the
long-tailed macaque (Macaca fascicularis) (Mf) during prenatal and postnatal development. Stomach
taken from seven fetuses (40, 55, 70, 85, 100, 120, and 150 gestation day) and two newborns (10 and 105
day old) animals was used in this study. The stomach was studied at macroscopic for observation of the
general structure. Measurement conducted to stomach length, wide of stomach body, greater curvature,
lesser curvature of the stomach in each of old age group. Perception result indicate that the stomach of Mf
was red bean like in form with short minor kurvatura. These values increased along with the age of fetus
and infant. The Lesser curvature very short. Greater curvature relative length (twice improvement) at
post natal (infant) compared to before birth (fetus). The morphological development of the stomach
increased with age, with very rapid further development after birth, which is possibly due to the age of the
fetus and in addition, the start of digestive activity and optimalization of stomach function.

Keywords: anatomy, digestion, primates

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