BLOOD SUPPLY OF THE ORBIT

Question 1

Main blood supplies of the orbit

Answer 1

Ophthalmic artery and infraorbital artery

Question 2

Branches of opthalmic artery(Mnemonic)

Answer 2

DR MCLESSI

Question 3

DR MC

Answer 3

Dorsal nasal, central retinal, muscular, ciliary

Question 4

LESSI

Answer 4

Lacrimal, Ethmoidal, supratrochlear, supraorbital, internal palpabrae

Question 5

Artery moving along the dorsal aspect of the nose, supplying the upper nose

Answer 5

Dorsal nasal artery

Question 6

Pierces the dural sheath of the optic nerve supplies the retina except the rods and cons

Answer 6

Central retinal

Question 7

Pierces the sclera at attachment of the rectus muscles, supplies the medial, lateral and superior rectus iris and ciliary body

Answer 7

Muscular artery

Question 8

Pierces the sclera at the end of the optic nerve, supplies the retina rods and cones

Answer 8

Short posterior ciliary artery

Question 9

Supplies the choroid and iris

Answer 9

Long post ciliary artery

Question 10

Passes anteriorly on the lateral side of orbit, supplies Lacrimal gland, conjunctiva, lateral side of eyelids

Answer 10

Lacrimal artery