. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. MOM THE MBTAB0L18M OF THB BODY. 4S» âºDY. ly be oonven- shemical kind, any tiflsae or ed to changes 1 it leaves the OS meebi.'cal D the prudent lually we shall I yet oompara- 1 they are ele- nearer to the from the first are been little bo find a road, irays by which ijectnre. We ^m this paint : 1. The for- n. We have inft»nmit^» as a cfMupoaition of 1. I int6 sugar by pen i
. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. MOM THE MBTAB0L18M OF THB BODY. 4S» âºDY. ly be oonven- shemical kind, any tiflsae or ed to changes 1 it leaves the OS meebi.'cal D the prudent lually we shall I yet oompara- 1 they are ele- nearer to the from the first are been little bo find a road, irays by which ijectnre. We ^m this paint : 1. The for- n. We have inft»nmit^» as a cfMupoaition of 1. I int6 sugar by pen in the liver I large number. of Bwrnpa of animals including some invertebrates. J. Among mammals it is most abundant when the animal feeds largely on oarbohydiates. 8. It is found in the liver of the carmvora, and in those of omnivom, when feeding exclusively on ilesh. 4 When an animal starves (does not feed), the glycogen grad- uaUy disappears. 6. A fatdiet does not give rise to glycogen. «. l>uring early foetri life glycogen is found in all the tissues, but later it is restricted more and more to the liver, ttough even in adults it is to be found in various tissues, espociaUy the muscles, from which it is almost never absent From tiie facts tiie inference is plain tiiat glycogen is formed from carbohydrate materials; or, to be rather more Mutious, that tiie formation of this substaooe is dependent on the pres- ence of such material in the food. Th* 7(M of OlyoogMLâNo positive statement can be made on thissubjeot Itisgenerallybelievedtobetransformedintosugar. What is the fWe of the traaafcmned glycogen t What be- comes of flie sugar! We can answer, negatively, tiut it is not rm up fai the blood, it is not oxidised flieie; but by what Uwuea it is used or how it is made available in the economy is a suUect on which we are profoundly ignorant The presence of so much glycogen in the partiaUy developed tissues of the foetus points to ite importance, and suggests
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