The kind of tissue that forms the supportive structure in our pinna (external sears) is also found in

Options

A. tip of the nose
B. vertebrae
C. nails
D. ear ossicles

Answer

To answer the question regarding the type of tissue that forms the supportive structure in our pinna (external ear), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Tissue Type**: The supportive structure of the pinna is formed by a specific type of tissue known as yellow elastic fibrocartilage.

2. **Understand the Characteristics**: Yellow elastic fibrocartilage is a type of cartilage that is characterized by its flexibility and resilience due to the presence of elastic fibers in addition to collagen fibers.

3. **Locate Other Areas of Presence**: This type of cartilage is not only found in the pinna but also in other parts of the body. Key locations where yellow elastic fibrocartilage is found include:
- The epiglottis (which prevents food from entering the trachea during swallowing)
- The tip of the nose (providing structure and flexibility)
- The Eustachian tubes (which connect the middle ear to the nasopharynx and help equalize pressure)

4. **Summarize the Findings**: Therefore, the yellow elastic fibrocartilage that supports the pinna is also found in the epiglottis, the tip of the nose, and the Eustachian tubes.

### Final Answer:
The kind of tissue that forms the supportive structure in our pinna (external ear) is yellow elastic fibrocartilage, which is also found in the epiglottis, the tip of the nose, and the Eustachian tubes.

---