The shape of a person’s external ear is supported by

Question

BlackTom AI · Accepted Answer

When considering the anatomy of the external ear, the supportive framework is largely built by elastic cartilage, which provides both rigidity and the ability to return to its shape after bending. 
Option 1: Dense Irregular Connective Tissue — While this tissue offers strength in multiple directions and is found in areas like the dermis, it does not provide the flexible cartilaginous framework that supports the ear. 
Option 2: Ligaments — Ligaments connect bone to bone or cartilage to bone and help stabilize joints, but they do not form the characteristic flexible frame of the external ear. 
Option 3: Elastic Cartilage — This is the correct choice. Elastic cartilage contains elastic fibers that confer a high degree of elasticity, enabling the auricle (pinna) to maintain shape after deformations, which matches the functional needs of the external ear. 
Option 4: Fibrocartilage — Fibrocartilage combines dense collagen with cartilage, typical of intervertebral discs and the pubic symphysis, not the elastic, pliable support seen in the ear. 
Option 5: Dense Regular Connective Tissue — This tissue provides unidirectional strength as seen in tendons and ligaments, but it lacks the cartilaginous properties and elasticity required for the ear’s contour and resilience. 
Thus, the tissue type that best explains the ear’s shape and flexibility is elastic cartilage.

BIOLOGY 211-B09C HW #3: Histology II: Connective Tissue

The shape of a person’s external ear is supported by

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