**3.1 Nasopharynx**

Nasopharynx is a near-cuboidal shaped space with an approximate volume of 30cm<sup>3</sup> . It is located exactly below the middle cranial fossa.

Boundaries of Nasopharynx:


Posterior to the torus tuboris, lies a deep recess called **lateral pharyngeal recess** or **fossa of rosenmuller**. Foramen lacerum lies immediately superior to the fossa of rosenmuller. Foramen spinosum and ovale are present laterally. Petrous apex and carotid canal form its posterior relation (**Figure 1**).
