Question

Your external ear (pinna) is supported by
A. Bone
B. Cartilage
C. Tendon
D. Capsule

Answer 1

Hint: It is a connective tissue commonly found in many parts of the body such as joints between bones. It forms a coating on our joints and provides cushioning of bones against an impact. It does not contain blood vessels or nerves.

Complete answer:
In the human body, the ear is divided into three components; the external ear, middle ear, and the internal ear. The external ear is divided into two parts; pinna or auricle and external acoustic meatus. It is a cartilaginous fleshy flap that helps to funnel sound waves directly into the auditory canal. The cartilage in the auricle forms an outer curvature known as the helix. Antihelix is the innermost curvature that runs parallel to the helix. It is divided into two types of cura; inner anterior crus and super posterior crus. Pinna is the first part of the external ear that reacts with sound. The elastic cartilage is also present in the pinna of the external ear. The elastic cartilage is able to withstand repeated bending. Chondrocytes are present between the fibres. It contains the most number of chondrocytes.

Hence, the correct answer is option B.

Note: The cartilage is a smooth and resilient elastic tissue that covers and protect the joints and nerves and forms the structural component of the rib cage, nose, external ear, bronchial tubes, intervertebral discs, and many other parts of the body. Elastic cartilage is the most flexible and strongest type of cartilage.