In Other Animals
In fishes, the meninges is a single membrane (the primitive meninx). In amphibians, reptiles and birds, the meninges include a thick outer dura mater and a thick inner secondary meninx. Mammals retain the dura mater, and the secondary meninx divides into the arachnoid and pia mater.
Read more about this topic: Meninges
Famous quotes containing the word animals:
“The saying, The Magyar is much too lazy to be bored, is worth thinking about. Only the most subtle and active animals are capable of boredom.A theme for a great poet would be Gods boredom on the seventh day of creation.”
—Friedrich Nietzsche (18441900)