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 ...

In reptiles, some groups have an outer ear but it consists only of the external auditory meatus. All birds and mammals (except some aquatic forms) have an external auditory meatus, longer than that of ...

Welcome, class, to the fascinating subject of today’s lesson: the human ear. This big thing on the side of the head is called the outer ear. It’s shaped a bit like a funnel, which helps it ...