Blood vessels of the orbit

This video tutorial explores the anatomy of the orbit, focusing on the blood vessels found within it. It begins with an overview of the internal carotid artery and its branches, including the ophthalmic artery. The tutorial then details the various branches of the ophthalmic artery, such as the central retinal, ciliary, lacrimal, supraorbital, and ethmoidal arteries. It also covers the veins of the orbit, including the inferior and superior ophthalmic veins and the cavernous sinus. The tutorial concludes with suggestions for further learning.

Which artery is the first branch of the internal carotid artery?

• Supraorbital artery

• Central retinal artery

• Ophthalmic artery

• Lacrimal artery

What does the central retinal artery supply?

• The lacrimal gland

• The frontal sinus

• The optic nerve fibers

• The ciliary body

Which group of ciliary arteries is the major focus in the tutorial?

• Posterior ciliary arteries

• Anterior ciliary arteries

• Short posterior ciliary arteries

• Long posterior ciliary arteries

The lacrimal artery is a branch of which artery?

• Internal carotid artery

• Ophthalmic artery

• Supraorbital artery

• Central retinal artery

What does the supraorbital artery supply?

• The optic nerve

• The lacrimal gland

• The skin of the forehead

• The nasal cavity

Which artery is also known as the frontal artery?

• Supratrochlear artery

• Dorsal nasal artery

• Lacrimal artery

• Supraorbital artery

The dorsal nasal artery supplies which part of the body?

• The frontal sinus

• The optic nerve

• The lacrimal sac

• The ciliary body

Which vein drains into the cavernous sinus?

• None of the above

• Inferior ophthalmic vein

• Superior ophthalmic vein

• Both inferior and superior ophthalmic veins

What is the function of the teragrid plexus?

• Supplies the lacrimal gland

• Connects with the middle meningeal artery

• Drains blood into the maxillary vein

• Supplies blood to the optic nerve

Which structure receives blood from the middle cerebral vein?

• Superior ophthalmic vein

• Inferior ophthalmic vein

• Teragrid plexus

• Cavernous sinus