“The exact reason these became vestigial is difficult to tell, as our ancestors lost this ability about 25 million years ago,” Schröeer said. “One possible explanation could be that the evolutionary ...

If you can wiggle your ears, you can use muscles that helped our distant ancestors listen closely. These auricular muscles helped change the shape of the pinna, or the shell of the ear ...

It is located just rostral and medial to the base of the pinna or external ear (Fig. 1). Figure 1: An anesthetized chinchilla in ventral recumbency with tympanic bulla (arrow) visible at the site ...

Our auricular muscles are vestigial, remaining part of our bodies while losing their function – moving the pinna, the outer ear – as evolution took its course. “The exact reason these became ...

Your doctor will decide which one you need. This depends on the size and depth of the cancer and where it is in the body. . You might have superficial radiotherapy: as your only treatment, if the ...

Ear (aural) hematomas occur when blood vessels in the pinna rupture secondary to trauma or excessive head shaking. Blood fills the space between the skin and the cartilage, causing pain and ...