. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. SOLIPEDA. composing it as they recede from the umbi- licus. The allantoid in the mare does not form a closed bag, as it does in the ruminants, but lines about half of the interior of the cavity that exists between the amnion and the clio- rion. To form an idea of this cavity and of the space occupied by the allantoid, it will be necessary first of all to consider the amnion as a sac, in which the foetus is enclosed, and the allantoid and the chorion as forming an- other sac of larger size, by which the former is envelope
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. SOLIPEDA. composing it as they recede from the umbi- licus. The allantoid in the mare does not form a closed bag, as it does in the ruminants, but lines about half of the interior of the cavity that exists between the amnion and the clio- rion. To form an idea of this cavity and of the space occupied by the allantoid, it will be necessary first of all to consider the amnion as a sac, in which the foetus is enclosed, and the allantoid and the chorion as forming an- other sac of larger size, by which the former is enveloped in such a manner, that an inter- space is left between the two : this interspace is traversed bv the second portion of the umbilical cord as it passes from the former sac towards the latter, and in this course, the cord is enveloped by the allantoid membrane, which subsequently invests all the interior of the second sac formed externally by the chorion. Fig. Anatomy of the gravid uteris of the mare. (After Dautenion.') a, the urachus emerging from the umbilical opening of the foetus, accompanied by the umbilical vein; I), and by two umbilical arte- ries ; c, continuation of the umbilical cord as far as the expansion of the amnion ; d, d, e, termination of the urachus ; f, continuation of the umbilical cord; g, g, allantois; h, the chorion; i, an liip- ponianes adherent to the allantoid by its pedicle ; k, I, m, two other hippomanes of smaller size. The other letters refer to the genera- tive organs of the foetus (a female) shown in connection with the above parts ; o, the rectum ; p, the anus ; q, the bladder of urine communicating with the urachus; r, r, the ureters; s, canal of the vagina; t, orifice of the urethra ; v, first appearance of the mem- brane, which subsequently spreads over the urethral orifice; .r, .T, the cornua uteri; y, separation between their internal cavities; z, 2, the ovaria. The aperture of the urachus pours forth a glairy fluid of a reddish co
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Keywords: ., bo, booksubjectanatomy, booksubjectphysiology, booksubjectzoology
