MAURO FERMARIELLO / SCIENCE PHOTO LIBRARY MAURO FERMARIELLO / SCIENCE PHOTO LIBRARY
Ruminant foetus. Preserved cut-away showing a ruminant foetus in its mother's uterus (womb). Ruminants are hoofed, cud-chewing animals that typically have a four-chambered stomach, such as cattle, sheep and deer. The structure of their placenta is also different to that of other mammals. Instead of a singe large placenta, ruminants have numerous small placentae (pink), an arrangement known as a cotyledonary placenta. The placentae provide the foetus with nourishment, eliminate waste products and exchange respiratory gases.
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