Questions: The shape of the external ear is maintained by hyaline cartilage elastic cartilage adipose tissue fibrocartilage

The shape of the external ear is maintained by hyaline cartilage elastic cartilage adipose tissue fibrocartilage
Transcript text: The shape of the external ear is maintained by hyaline cartilage elastic cartilage adipose tissue fibrocartilage
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The answer is the second one (elastic cartilage).

Explanation for each option:

  1. Hyaline cartilage: This type of cartilage is found in areas such as the nose, trachea, and at the ends of long bones where it provides support and flexibility. However, it is not the primary cartilage in the external ear.
  2. Elastic cartilage: This type of cartilage contains elastic fibers, making it more flexible and resilient. It is found in structures that require shape retention and flexibility, such as the external ear (pinna) and the epiglottis.
  3. Adipose tissue: This is a type of connective tissue that stores fat. It provides insulation and cushioning but does not maintain the shape of the external ear.
  4. Fibrocartilage: This type of cartilage is very tough and is found in intervertebral discs and the menisci of the knee. It is designed to withstand heavy pressure and tension but is not involved in maintaining the shape of the external ear.

Summary: The shape of the external ear is maintained by elastic cartilage.

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