Answer to Question #203104 in Zoology for Elizabeth

Question

How is the auditory nerve/auditory ganglion formed in the frog larva? Why are there yolk platelets in the lining of the lung buds of frog larva?

Answer 1

Two branches consist of the auditory nerve or eights cranial nerve, the cochlear nerve which transmits auditory data away from the cochlea, as well as the vestibular nerve that removes vestibular information from the semicircular channels. There are about 50,000 cochlear axons in each cochlear nerve.

The hearing route transmits the distinctive feeling of hearing. Information passes to the central nervous system, carried by the vestibulocochlear nerve, from the receptors of the inner ear organ Corti.

The lips and front lining of the mouth are ectodermal, and in the larva the range of the invagined and pigmented stomodeal ectoderma can be identified.