منابع مشابه
Basic Avian Anatomy
Introduction Everyone is familiar with the anatomy of mammals and may also have some knowledge of a few avian anatomical characteristics. The purpose of this discussion is to provide a deeper insight into avian anatomy and provide some comparisons to mammalian features. An understanding of avian anatomy is essential for avian practitioners. Sources of information for this discussion include the...
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FORMATION OF THE AVIAN GONADS AND REPRODUCTIVE ANATOMY The avian gonads arise from more than one embryonic source. The medulla or core arises from the mesonephric ducts. The outer cortex arises from a thickening of peritoneum along the root of the dorsal mesentery within the primitive gonadal ridge. Mesodermal germ cells that arise from yolk-sac endoderm migrate into this gonadal ridge, forming...
متن کاملAvian Cephalic Vascular Anatomy, Sites of Thermal Exchange, and the Rete Ophthalmicum.
The general anatomy of avian cephalic blood vessels is well known and there are published details of their role in physiological thermoregulation. Unfortunately, the finer details of vascular pathways to and from sites of thermal exchange are not well known. Additionally, the role of the rete ophthalmicum (RO), a vascular heat exchanger in the temporal region, has been investigated in terms of ...
متن کاملThe non-avian theropod quadrate I: standardized terminology with an overview of the anatomy and function
The quadrate of reptiles and most other tetrapods plays an important morphofunctional role by allowing the articulation of the mandible with the cranium. In Theropoda, the morphology of the quadrate is particularly complex and varies importantly among different clades of non-avian theropods, therefore conferring a strong taxonomic potential. Inconsistencies in the notation and terminology used ...
متن کاملThe pulmonary anatomy of Alligator mississippiensis and its similarity to the avian respiratory system.
Using gross dissections and computed tomography we studied the lungs of juvenile American alligators (Alligator mississippiensis). Our findings indicate that both the external and internal morphology of the lungs is strikingly similar to the embryonic avian respiratory system (lungs + air sacs). We identified bronchi that we propose are homologous to the avian ventrobronchi (entobronchi), later...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1964
ISSN: 0032-5791
DOI: 10.3382/ps.0431381a