_1_, Left ruminal artery; _2_, continuation of right ruminal artery;
_3_, reticular artery, which disappears into rumino-reticular
groove; _A_, dorsal sac of rumen; _B_, ventral sac of rumen; _C_,
_C_, posterior blind sacs; _D_, œsophagus; _E_, reticulum; F,
rumino-reticular groove; _G_, left longitudinal furrow of rumen.
]
2. The ileo-cæco-colic artery ramifies on the right face of the spiral
part of the colon. It gives off the ileo-cæcal artery, which divides
into ileal and cæcal arteries.
3. An artery (Ramus collateralis) runs in the mesentery in a curve along
the ventral border of the coils of the colon. (This vessel is absent in
the sheep.)
4. An artery which constitutes the direct continuation of the anterior
mesenteric pursues a course in the mesentery corresponding to the series
of mesenteric lymph glands.
[Illustration: