**Core Concept**
Cheilography refers to the study of the lips. It is a part of facial anatomy that encompasses the morphology, embryology, and clinical significance of the lips.

**Why the Correct Answer is Right**
Cheilography involves the examination of the lips' structure, including the orbicularis oris muscle, the philtrum, and the Cupid's bow. The study of the lips is essential in various medical specialties, such as dermatology, plastic surgery, and oral medicine. Cheilography is also relevant in the diagnosis and management of lip-related disorders, such as lip cancer, lip trauma, and lip anomalies.

**Why Each Wrong Option is Incorrect**
**Option A:** Cheilography is not the study of tongue anatomy, which is known as glossography.
**Option B:** Cheilography is not the study of ear anatomy, which is known as otology or auriculography.
**Option C:** Cheilography is not the study of nose anatomy, which is known as rhinology or nasography.

**Clinical Pearl / High-Yield Fact**
The Cupid's bow, a prominent curved shape of the upper lip, is formed by the fusion of the maxillary and mandibular processes during embryonic development.

**Correct Answer:** C.