Podcast
Questions and Answers
What type of membrane covers the deep surface of the eyelids?
What type of membrane covers the deep surface of the eyelids?
- Synovial membrane
- Mucous membrane (correct)
- Epimysial membrane
- Epithelial membrane
What covers the superficial surface of the eyelids?
What covers the superficial surface of the eyelids?
- Muscle tissue
- Mucous membrane
- Skin (correct)
- Epithelial tissue
What is the name of the membrane that covers the deep surface of the eyelids?
What is the name of the membrane that covers the deep surface of the eyelids?
- Sclera
- Epithelium
- Cornea
- Conjunctiva (correct)
What is the function of the conjunctiva in the eye?
What is the function of the conjunctiva in the eye?
What is the relationship between the skin and the conjunctiva in the eyelids?
What is the relationship between the skin and the conjunctiva in the eyelids?
Through which opening do tears enter the canaliculi lacrimales?
Through which opening do tears enter the canaliculi lacrimales?
What is the function of the canaliculi lacrimales?
What is the function of the canaliculi lacrimales?
Where do tears circulate before entering the canaliculi lacrimales?
Where do tears circulate before entering the canaliculi lacrimales?
What is the name of the tiny opening that tears flow through to enter the nasolacrimal duct?
What is the name of the tiny opening that tears flow through to enter the nasolacrimal duct?
What is the pathway of tears from the eye to the nose?
What is the pathway of tears from the eye to the nose?
The lacrimal fold is a type of:
The lacrimal fold is a type of:
Where does the nasolacrimal duct open?
Where does the nasolacrimal duct open?
What is the function of the lacrimal fold?
What is the function of the lacrimal fold?
The nasolacrimal duct is located in which type of canal?
The nasolacrimal duct is located in which type of canal?
What is the direction of the nasolacrimal duct?
What is the direction of the nasolacrimal duct?
What is the location of the inferior orbital fissure?
What is the location of the inferior orbital fissure?
What structure does the inferior orbital fissure communicate with?
What structure does the inferior orbital fissure communicate with?
Which of the following bones forms the inferior orbital fissure?
Which of the following bones forms the inferior orbital fissure?
What is the relationship between the inferior orbital fissure and the orbit?
What is the relationship between the inferior orbital fissure and the orbit?
Which of the following statements about the inferior orbital fissure is TRUE?
Which of the following statements about the inferior orbital fissure is TRUE?
What is the origin of the ophthalmic artery?
What is the origin of the ophthalmic artery?
Which of the following arteries is closely related to the ophthalmic artery?
Which of the following arteries is closely related to the ophthalmic artery?
What is the primary function of the ophthalmic artery?
What is the primary function of the ophthalmic artery?
Which of the following structures is NOT supplied by the ophthalmic artery?
Which of the following structures is NOT supplied by the ophthalmic artery?
What is the relationship between the ophthalmic artery and the internal carotid artery?
What is the relationship between the ophthalmic artery and the internal carotid artery?
Study Notes
Eyelid Structure
- The superficial surface of the eyelids is covered by skin.
- The deep surface of the eyelids is covered by a mucous membrane called the conjunctiva.
Lacrimal Ducts
- Tears circulate across the cornea and enter the canaliculi lacrimales through the puncta lacrimalis.
- The lacrimal duct descends downward in a bony canal and opens into the inferior meatus of the nose.
- The opening of the lacrimal duct is guarded by a fold of mucous membrane known as the lacrimal fold.
Bony Orbits
- The inferior orbital fissure is located posteriorly between the maxilla and the greater wing of the sphenoid.
- The inferior orbital fissure communicates with the pterygopalatine fossa.
Blood and Lymph Vessels of the Orbit
Ophthalmic Artery
- The ophthalmic artery is a branch of the internal carotid artery.
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Description
Learn about the structure of the eyelids, lacrimal ducts, and their functions in the human eye.
