A general term for a nearly closed cavity or chamber. For example, the antrum of the stomach (gastric antrum) is a portion before the outlet, which is lined by mucosa and does not produce acid. The paranasal sinuses can be referred to as the frontal antrum, ethmoid antrum, and maxillary antrum.

The empty space inside any hollow organ or bodily structure.

"a cave or cavity," late 14c., medical Latin, from Greek antron "cave."

antrum = a cave. aorta

(n) a natural cavity or hollow in a bone

The air space located in the body of the Maxillary Bone near each cheek. Each maxillary sinus communicates with the middle passage (meatus) of the Nasal Cavity on the same side.

The region between the sharp indentation at the lower third of the Stomach (incisura angularis) and the junction of the Pylorus with the Duodenum. Pyloric antral glands contain Mucus-secretinG Cells a [..]

A general term for cavity or chamber which may have specific meaning in reference certain organs or sites in the body. The antrum of the stomach (gastric antrum) is a portion before the outlet which is lined by mucosa which does not produce acid. The paranasal sinuses can be referred to as the frontal antrum, ethmoid antrum, and maxillary antrum.

A general term for cavity or chamber which may have specific meaning in reference certain organs or sites in the body. The antrum of the stomach (gastric antrum) is a portion before the outlet which is lined by mucosa which does not produce acid. The paranasal sinuses can be referred to as the frontal antrum, ethmoid antrum, and maxillary antrum. ( [..]