the parasympathetic nervous system stimulates the secretion of diluted saliva. The nervous center for this reflex is the superior salivatory nucleus in the pons for sublingual and submandibular glands(seventh cranial nerve-facial), and the inferior salivatory nucleus for parotid glands(ninth cranial nerve-glossopharyngeal nerve)
As many believe after doing an extensive form of research work of years that reptiles are the ancestors of the mammals that we see now. Which means that we mammals evolved from the pre-historic form of reptiles.
Explanation:
Fossils of Thrinaxodon, a species that lived during the Triassic period, have been found in both South Africa and Antarctica. Thrinaxodon had a reptile-like skeleton and laid eggs, but small depressions on the front of its skull suggest it had whiskers and, therefore, fur. Thrinaxodon may have been warm-blooded. The fossils of Thrinaxodon are consistent with the hypothesis that <u>mammals evolved from the pre-historic reptiles.</u>
