The Orbit. B. External Orbital Characteristics

Question 1

What are the layers of the eyelid?

Answer 1

skin, orbicularis oculi muscles, tarsal plate/tarsus & palpebral conjunctiva

Question 2

What are the names given to the modified sebaceous gland in the tarsus of the eyelid?

Answer 2

tarsal or Meibomian gland

Question 3

What is the functions of the Meibomian gland?

Answer 3

produces a thick, hydrophobic substance that prevents tears from overflowing onto the cheeks along the margin of the eyelid

Question 4

What are the names given to the modified sebaceous glands of the palpebra?

Answer 4

tarsal gland or Meibomian gland and ciliary gland

Question 5

What is the name given to the angle formed between the superior and inferior eyelids at their medial and lateral margins?

Answer 5

canthus

Question 6

What is the name given to the elevation at the medial canthus?

Answer 6

lacrimal caruncle

Question 7

What is the crescent-shaped appearance of the conjunctiva at the medial canthus called?

Answer 7

plica semilunaris conjunctiva

Question 8

What is the name given to the opening at the lacrimal papilla?

Answer 8

lacrimal punctum

Question 9

The lacrimal punctum is continuous with what structure?

Answer 9

lacrimal canaliculus