Auricle of the ear is made of:
**Core Concept**
The auricle, or pinna, is the visible part of the ear that collects sound waves. It is composed of a **flexible cartilaginous** structure, which provides its shape and support. The main component of the auricle is **elastic cartilage**.
**Why the Correct Answer is Right**
The correct answer is related to the composition of the auricle. The auricle is made of **elastic cartilage**, which allows it to maintain its shape while being flexible. This type of cartilage is rich in **elastic fibers**, providing the necessary elasticity.
**Why Each Wrong Option is Incorrect**
**Option A:** Is incorrect because the auricle is not made of bone.
**Option B:** Is incorrect because the auricle is not made of muscle.
**Option D:** Is incorrect because the auricle is not made of a simple epithelial layer.
**Clinical Pearl / High-Yield Fact**
The auricle's cartilaginous structure is crucial for its function, as it allows for the collection and direction of sound waves towards the ear canal.
**Correct Answer:** D. Elastic cartilage.