Tears normally flow from the lacrimal sac into the:


a. lacrimal gland.
b. lacrimal canaliculi.
c. lacrimal puncta.
d. nasolacrimal duct.

Verified step by step guidance

1. Identify the function of the lacrimal sac in the tear drainage system.
2. Understand the pathway of tear drainage starting from the lacrimal gland.
3. Recognize that tears flow from the lacrimal sac to the next structure in the sequence.
4. Recall that the nasolacrimal duct is the structure that follows the lacrimal sac in the tear drainage pathway.
5. Conclude that tears flow from the lacrimal sac into the nasolacrimal duct.

Key Concepts

Lacrimal System

The lacrimal system is responsible for the production and drainage of tears. It includes the lacrimal glands, which produce tears, and a series of ducts and canals that transport tears from the eyes to the nasal cavity. Understanding this system is crucial for answering questions about tear flow and related anatomy.

Lacrimal Puncta

Lacrimal puncta are small openings located at the inner corners of the eyelids. They serve as the entry points for tears to drain from the surface of the eye into the lacrimal canaliculi. Recognizing the role of puncta is essential for understanding how tears are directed into the drainage system.

Nasolacrimal Duct

The nasolacrimal duct is a tube that carries tears from the lacrimal sac into the nasal cavity. It plays a vital role in the drainage of tears, preventing overflow and maintaining eye moisture. Knowledge of this duct is important for comprehending the complete pathway of tear drainage.