Changes in Blood PCO2 and Acid-Base Status in Chick Embryo between Day 4 and 6 of Incubation
Warm blooded embryos grow rapidly during the first third of the developmental period. Embryonic mass can multiply five-fold and more within one day. To meet the metabolic demands of the growing organism adequate adaptations of the transport function of the blood are necessary. It has been shown that blood volume, hematocrit and cardiac output increase, and that specific properties of the blood change (e.g. oxygen affinity of the hemoglobin), but the few available data are not sufficient to describe even the basic physiological functions during the early stages of development. On the other hand, there is a high rate of abortions during early human pregnancy which is due to other than genetic abnormalities and only poorly understood.
KeywordsChick Embryo Oxygen Affinity Embryonic Mass Vitelline Vein Early Chick Embryo
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