lacrimal apparatus

Thân thiện

A diagram shows the lacrimal apparatus of the human eye.

Definition

Noun: The physiological system responsible for the production, distribution, and drainage of tears from the eye. It consists of the glands that secrete tears and the ducts that drain them away.

Usage

The term "lacrimal apparatus" is used in medical, anatomical, and biological contexts to describe the integrated structures involved in tear function. It is a singular, collective noun.

Examples

• The lacrimal apparatus is essential for keeping the surface of the eye moist and free from debris.
• An infection or blockage in the lacrimal apparatus can lead to excessive tearing or dry eye.
• The ophthalmologist examined the patient's lacrimal apparatus to determine the cause of the persistent irritation.

Advanced Usage

• Clinical Context: The term is frequently used in diagnoses, surgical procedures, and descriptions of ocular physiology. For example: "Dacryocystorhinostomy is a surgical procedure to correct an obstruction in the lacrimal apparatus."

Variants and Related Words

• Lacrimal (adjective): Pertaining to tears or the tear-secreting glands. (e.g., the gland, fluid).
• Lacrimation (noun): The secretion or flow of tears.

Synonyms

• Tear system
• Tear duct system (This is a less formal and more descriptive synonym, though it may not encompass all secretory components as precisely as "lacrimal apparatus").

Notes on Meaning

The "lacrimal apparatus" refers specifically to the anatomical structures. It is distinct from the act of crying (which is "lacrimation" or "weeping") and the emotional state that may cause it. Its primary functions are protective (lubrication, cleansing) and physiological, not primarily emotional.

Học thuật

Noun

1. the structures that secrete and drain tears from the eye