The cartilaginous framework dictating the contour of the outer ear is formed by____________?
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Answer: A. Elastic cartilage
Explanation
Elastic cartilage provides the specific flexibility and structural resilience required by the outer ear. Microscopic elastin fibers within the extracellular matrix allow the external ear to bend repeatedly. The distinctive framework of the auricle relies entirely on this specialized type of pliable cartilage. Cartilage is a flexible connective tissue found in various skeletal locations throughout the body. Elastic cartilage differs from other cartilage types by containing a dense network of branching fibers. The external ear structure maintains its shape effortlessly thanks to resilient elastic cartilage tissue.
Piercing the outer ear involves penetrating elastic cartilage tissue without causing permanent structural collapse. Surgeons utilize elastic cartilage grafts from the ear to reconstruct facial features during procedures. Unlike bone, elastic cartilage lacks a direct blood supply and heals slowly when injured. Fibrocartilage provides high tensile strength in weight-bearing joints like intervertebral discs instead. Articular cartilage covers the ends of long bones in synovial joints to reduce friction. None is incorrect because elastic cartilage is listed as the correct option among choices.
- Subject
- Everyday Science
- Category
- Everyday Science
- Topic
- —
- Difficulty
- medium
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