. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. .... 968 COMPARATIVE PHYSIOLOGY. permit of a supply of arterwl blood being maintained without oongeston of the parti. Very marked tortuosity of Tessels, as in the seal, the carotid of which is said to be forty times as long. Fia. â ⢠lympiiatiertU nUrtMU, turn thepopUlMl tpaoe (afterOIuhh t«M). 0,0, aflefMit TatMl*. >, b, ttmat rewalt. 'mtwtuAtwtfnnagijtug- â
. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. .... 968 COMPARATIVE PHYSIOLOGY. permit of a supply of arterwl blood being maintained without oongeston of the parti. Very marked tortuosity of Tessels, as in the seal, the carotid of which is said to be forty times as long. Fia. â ⢠lympiiatiertU nUrtMU, turn thepopUlMl tpaoe (afterOIuhh t«M). 0,0, aflefMit TatMl*. >, b, ttmat rewalt. 'mtwtuAtwtfnnagijtug- â wto ⢠erad* form of lymphatte ipaad. as the space it traverses, in all probability serves the same puN pose. BvototiOlLâ^The comparative sketch we have given of the vascular system will doubtless suggest a gradual evolution. We observe throughout a dependence and resemblance which we think can not be otherwise explained. The similarity of the foetal circulation in the mammal to the permanent circula- tion of lower groups has much meaning. Even in the highest form of heart the original pulsatile tube is not lost. The great veins still contract in the mammal; the sinus venosus is proba- bly the result of blending and expansion. The later differentia- tions of the parts of the heart are clearly related to the adapta- tion to altered surroundings. Such is seen in the foetal heart and circulation, and has probably been the determining cause of the forms which the circulatory organs have assumed. It is a fact that the part of the heart that survives the long- est under adverse conditions is that which bears the stamp of greatest ancestral antiquity. It (the sinus venosus) may not. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Mills, Wesley, 1847-1915. New York : D. Appleton; London : Caxton House
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Keywords: ., bookauthormillswes, bookcentury1800, bookdecade1890, bookyear1890
