Which of the following terms refers to the absence of the external ear?

The term that refers to the absence of the external ear is microtia. Microtia is a congenital condition where the external ear is underdeveloped or absent. This condition can vary in severity, with some individuals having a small remnant of an ear, while others may have no ear structure at all.

Understanding microtia is essential in surgical technology, especially when planning for reconstructive procedures or when dealing with cases that involve ear anomalies in different surgical contexts. This term is specifically related to the ear, which distinguishes it clearly from other terms listed.

For example, anophthalmia refers to the absence of one or both eyes, cheiloschisis describes a cleft lip, and extrosyndactyly refers to a condition involving fused fingers or toes and is unrelated to ear structures. Recognizing the correct terminology in anatomical and clinical contexts is vital for effective communication and patient care in surgical settings.