Middle ear appeared in amphibians. Reptiles, birds, mammals have all three ... especially along the ‘lateral line canal’. Figure 19-6 Sensory hair cells within neuromasts have sensory fibers on the ...

Oh, and check out all those hairs. Everyone's got them ... Next and last stop, the middle ear. We are now looking at an actual eardrum. The eardrum's a thin piece of skin, and other tissues ...