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Anatomy BLOCK 3 > Orbit And eye > Flashcards

Flashcards in Orbit And eye Deck (108)
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1

What does the orbit contain?

-eyeballs
-extraocular muscles
-nerves
-BV
-SO MUCH fat
-lacrimal gland

2

What are the orbits

A pair of bony cavities

3

What is the shape of the orbit?

Pyramidal
Base in front
Apex behind

4

Roof of orbit

Orbital plate of the frontal bone

5

Lateral wall of the orbit

Formed by the zygomatic bone and the greater wing of the sphenoid

6

Floor of the orbit

Formed by the orbital plate of the maxilla, which separates the orbital cavity from the maxillary sinus

7

Medial wall of the orbit

Formed by the frontal process of the maxilla, lacrimal bone, orbital plate of the ethmoid, and the body of sphenoid

8

What is the purpose of eyelids?

Protect the eye from injury and excessive light

9

Upper eye lid

Larger and more mobile than the lower lid

10

Where do both eyelids meet?

At the medial and lateral angles

11

The opening between the eyelids and the entrance into the conjunctival sac

Palpebral fissure

12

What is the superficial surface of the eyelid covered in?

Skin

13

What is the deep surface of the eyelid covered with?

mucous membrane called the conjunctiva

14

How are the eyelashes arranged?

In double or triple rows at the mucocutaneous junction

15

What kind of glands open into the eyelash follicles?

Sebaceous

16

Modified sebaceous glands that open into the margin of the eyelid behind the eyelashes

Tarsal glands

17

What do tarsal glands secrete?

Oily substance which prevents the overflow of tears

18

Thin mucous membrane that lines the eyelids and is reflected at the superior and inferior cornices onto the anterior surface of the eyeball

Conjunctiva

19

What is continuous with the cornea?

Epithelium of the conjunctiva

20

Potential space

The conjunctiva creates this, which opens at the palpebral fissure

21

What ar the eyelids supported about

Fibrous sheet called the orbital septum

22

What is attached to the periosteum at the orbital margins

Septum

23

What forms the tarsal plates?

The orbital margins thicken to form it

24

What is embedded in the tarsal plate

Tarsal glands

25

What consists of a large orbital part and a small palpebral part, which are continuous with each other?

Lacrimal gland

26

Where is the locational gland located

Above the eyeball in the upper lateral and anterior aspect of the orbit

27

How many ducts are in the lacrimal gland?

12

28

Where do the ducts of the lacrimal gland open

Into the lateral part of the superior fornix of the conjunctiva

29

What are the two parts of the lacrimal gland

Large orbital part and a small palpebral part, which are continuous with each other

30

Where is the lacrimal gland located in regard to eyeball

Above the eyeball in the upper lateral and anterior aspect and the orbit