Blutgefäße der Orbita

This video tutorial provides an in-depth look at the blood vessels within the orbit, focusing on the arteries and veins. It begins with an overview of the internal carotid artery and its branches, particularly the ophthalmic artery, which supplies various structures in and around the orbit. The tutorial then explores the ethmoidal and supraorbital arteries, detailing their paths and functions. Finally, it covers the venous system, including the cavernous sinus and its connections, highlighting the clinical significance of these structures.

Which artery is primarily responsible for supplying blood to the brain and releases branches to the orbit?

• External carotid artery

• Internal carotid artery

• Vertebral artery

• Basilar artery

What is the main artery that emerges from the internal carotid artery to supply the orbit?

• Ophthalmic artery

• Maxillary artery

• Temporal artery

• Facial artery

Which artery supplies the retina and is a branch of the ophthalmic artery?

• Central retinal artery

• Lacrimal artery

• Supraorbital artery

• Ethmoidal artery

The lacrimal artery is the longest branch of which artery?

• Temporal artery

• Facial artery

• Maxillary artery

• Ophthalmic artery

Which artery passes through the supraorbital foramen?

• Central retinal artery

• Infraorbital artery

• Supraorbital artery

• Lacrimal artery

What is the primary function of the ethmoidal arteries?

• Supply the retina

• Supply the nasal cavity

• Supply the eyelids

• Supply the lacrimal gland

Which vein is the largest and most important of the intra-orbital veins?

• Superior ophthalmic vein

• Maxillary vein

• Inferior ophthalmic vein

• Facial vein

What is the clinical significance of the superior ophthalmic vein's connection to the cavernous sinus?

• It can cause increased intraocular pressure

• It can lead to cavernous sinus thrombosis

• It can cause glaucoma

• It can result in retinal detachment

Which area is known as the 'warning triangle' of the face due to infection risks?

• Between the eyebrows

• Around the nostrils

• Between the medial eye angle and upper lip

• Below the chin

What is the role of the cavernous sinus in venous drainage?

• Drains into the facial vein

• Drains into the maxillary vein

• Drains into the internal jugular vein

• Drains into the external jugular vein