Osteomeatal complex (OMC) connects
**Core Concept**
The osteomeatal complex (OMC) is a critical anatomical structure in the paranasal sinuses, involved in the drainage and ventilation of the sinuses. It is located in the middle meatus of the nasal cavity. The **ethmoidal infundibulum**, **maxillary sinus ostium**, and **frontal recess** are key components of the OMC.
**Why the Correct Answer is Right**
The correct connection of the OMC involves the **maxillary**, **frontal**, and **anterior ethmoid sinuses**. The OMC acts as a common pathway for the drainage of these sinuses, with the **maxillary sinus** draining through the **semilunar hiatus** into the middle meatus.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not accurately describe the sinuses connected by the OMC.
**Option B:** Similarly, this option is incorrect as it fails to include all the relevant sinuses.
**Option C:** This option is also incorrect as the OMC specifically connects the maxillary, frontal, and anterior ethmoid sinuses.
**Clinical Pearl / High-Yield Fact**
The OMC is a high-risk area for the development of **chronic rhinosinusitis** and **nasal polyposis** due to its role in sinus drainage. Understanding the anatomy of the OMC is crucial for **endoscopic sinus surgery**.
**Correct Answer:** D. maxillary, frontal, and anterior ethmoid sinuses.