The arrangement of glands and ducts which produce and drain tears.
Structures that secrete and drain tears from the eye. Tears produced in the lacrimal gland drain through small openings at the comer of the eye into special ducts that pass into the nasal cavity.
A body system associated with the production and drainage of tears. The tear-forming system, which includes the lacrimal glands, the eyelid margins, the conjunctival sac, and the tear drainage system, keeps the eye moist and free of dust and other irritants.
The structures that produce and drain away fluid from the eye. The lacrimal gland secretes ‘tears, which drain away through small openings (puncta) at the inner comer of the eye into two lacrimal canaliculi. From there the tears pass into the nasal cavity via the lacrimal sac and the nasolacrimal duct.
Structures concerned with the secretion and conduction of tears. It includes the lacrimal gland and its secretory ducts, lacrimal canaliculi, lacrimal sac, and nasolacrimal duct, which empties into the nasal cavity.
The mechanism within the eye responsible for generating and expelling tears is referred to as the lacrimal apparatus. This apparatus encompasses the primary and supplementary lacrimal glands, along with the nasolacrimal drainage duct.
The primary tear glands are situated near the upper and outer edge of the eye socket. These glands release tears when the eye becomes irritated or during moments of crying. The tears are then directed onto the conjunctiva, which is the clear membrane that covers the inner side of the eyelids and the white part of the eye.
The supplementary glands are situated within the conjunctiva and are responsible for preserving the regular tear film. They release this fluid directly onto the conjunctiva, and the act of blinking helps distribute the fluid evenly across the surfaces of the eye.
Tears exit the eye via the lacrimal puncta, small openings located near the inner edges of both the upper and lower eyelids. These puncta are linked by narrow tubes to the lacrimal sacs, which are situated within the lacrimal bones on the sides of the nose. From the sacs, the tears proceed through the nasolacrimal ducts, ultimately opening inside the nose.