Nasolacrimal canal
Encyclopedia
The canal containing the nasolacrimal duct
is called the nasolacrimal canal.
It is formed by indentations in the inferior nasal conchae
, maxilla
and lacrimal bone
. It drains to into the nasal cavity
through the anterior portion of the inferior meatus
which is between the inferior concha and the floor of the nasal cavity.
Nasolacrimal duct
The nasolacrimal duct carries tears from the lacrimal sac into the nasal cavity. Excess tears flow through nasolacrimal duct which drains into the inferior nasal meatus...
is called the nasolacrimal canal.
It is formed by indentations in the inferior nasal conchae
Inferior nasal conchae
The inferior nasal concha is one of the turbinates in the nose. It extends horizontally along the lateral wall of the nasal cavity [Fig. 1] and consists of a lamina of spongy bone, curled upon itself like a scroll...
, maxilla
Maxilla
The maxilla is a fusion of two bones along the palatal fissure that form the upper jaw. This is similar to the mandible , which is also a fusion of two halves at the mental symphysis. Sometimes The maxilla (plural: maxillae) is a fusion of two bones along the palatal fissure that form the upper...
and lacrimal bone
Lacrimal bone
The lacrimal bone, the smallest and most fragile bone of the face, is situated at the front part of the medial wall of the orbit. It has two surfaces and four borders.-Lateral or orbital surface:...
. It drains to into the nasal cavity
Nasal cavity
The nasal cavity is a large air filled space above and behind the nose in the middle of the face.- Function :The nasal cavity conditions the air to be received by the other areas of the respiratory tract...
through the anterior portion of the inferior meatus
Inferior meatus
The inferior meatus, the largest of the three meatuses of the nose, is the space between the inferior concha and the floor of the nasal cavity....
which is between the inferior concha and the floor of the nasal cavity.