Observations on the gross and microscopic anatomy of the sloths (Bradypus griseus griseus Gray and Choloepus hoffmanni Peters)

摘要: In this study observations are reported upon the morphological differences between three-toed and two-toed forms of sloths, as well a comparison made some aspects sloths other groups Xenarthra. Much attention has been paid to gross, histological examination viscera, musculature, vascular lymphatic systems. The importance correlation findings with physiological studies emphasized. For example, probable plexuses extremities postures muscular activity different members Xenarthra is discussed. new information gained concerning placentation development structure male female reproductive tracts.