منابع مشابه
Primate pelvic anatomy and implications for birth.
The pelvis performs two major functions for terrestrial mammals. It provides somewhat rigid support for muscles engaged in locomotion and, for females, it serves as the birth canal. The result for many species, and especially for encephalized primates, is an 'obstetric dilemma' whereby the neonate often has to negotiate a tight squeeze in order to be born. On top of what was probably a baseline...
متن کاملPrimate Orgins: Connecting the Dots between Ecology, Behavior, and Anatomy
Copyright: © 2012 Muchlinski MN. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. The existing dispute over primate origins enters its ninth decade of investigation. Questions of when and why primate traits (e....
متن کاملCranial anatomy of the Duchesnean primate Rooneyia viejaensis: new insights from high resolution computed tomography.
Rooneyia viejaensis is a North American Eocene primate of uncertain phylogenetic affinities. Although the external cranial anatomy of Rooneyia is well studied, various authors have suggested that Rooneyia is a stem haplorhine, stem strepsirrhine, stem tarsiiform, or stem anthropoid. Here we describe the internal cranial anatomy of the Rooneyia holotype based on micro-computed tomography and dis...
متن کاملPressure-induced fast axonal transport abnormalities and the anatomy at the lamina cribrosa in primate eyes.
In ten owl monkey eyes (Aotus trivirgatus) the location of pressure-induced (perfusion pressure 35 mmHg) axonal transport abnormalities was determined by the examination of serial step cross-section tissue radio autographs from the optic nerve head. The degree of the local transport interruption did not correlate with the fiber bundle cross-section area, the shape of the laminar pores or the de...
متن کاملAnatomy and physiology of a color system in the primate visual cortex.
Staining for the mitochondrial enzyme cytochrome oxidase reveals an array of dense regions (blobs) in the primate primary visual cortex. They are most obvious in the upper layers, 2 and 3, but can also be seen in layers 4B, 5, and 6, in register with the blobs in layers 2 and 3. We compared cells inside and outside blobs in macaque and squirrel monkeys, looking at their physiological responses ...
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ژورنال
عنوان ژورنال: Nature
سال: 1973
ISSN: 0028-0836,1476-4687
DOI: 10.1038/243175a0