## outerear_hairs.jpg This is a detailed diagram illustrating the external auditory canal, which is part of the ear structure involved in hearing. The image includes an inset that provides close-up views of different sections of the canal. ### Main Diagram: - **External Auditory Canal**: This is the outermost part of the ear canal leading to the eardrum. - **Outer Ear (Pinna)**: Not shown directly, but implied as the area where sound enters before reaching the auditory canal. - **Ear Canal**: The main structure depicted in this diagram. It's a tube that extends from the external opening of the ear into the head. ### Inset: - This inset shows a cross-section of different parts of the ear canal to highlight variations in hair follicles and cerumen glands (wax-producing glands). - **Epidermis**: The outermost layer of skin, shown as a thin layer with some hairs. - **Hair Follicles**: Small structures that house hair. These are depicted as small, rounded shapes embedded within the epidermis. - **Stratum Corneum**: A layer of dead skin cells on top of the epidermis. It is shown as a slightly thicker layer above the hair follicles. - **Cerumen Glands**: These glands produce earwax and are depicted as small, oval-shaped structures within the canal wall. ### Labels: - The diagram includes labels for different parts to help identify them clearly: - **Epidermis** - **Hair Follicles** - **Stratum Corneum** - **Cerumen Glands** ### Source Information: - This image is from Figure 4–8 in the book "Audiology: Science to Practice" by Kramer & Brown, published in 2019. - The source of this diagram is credited to Indiana University School of Medicine and the Office of Visual Media. This detailed diagram helps explain how different parts of the ear canal contribute to hearing and can be affected by wax buildup or other conditions. This description was generated automatically from image files by a local LLM, and thus, may not be fully accurate. Please feel free to ask questions if you have further questions about the nature of the image or its meaning within the presentation.