Intercostal arteries

The video tutorial explains the intercostal arteries, focusing on their origin, course, and anastomosis. It covers the posterior intercostal arteries arising from the aorta and the anterior intercostal arteries from the internal thoracic artery. The tutorial highlights the anastomotic connections between these arteries, providing collateral circulation. The anatomical orientation and visual aids help in understanding the arterial supply to the thoracic wall.

What is the primary function of intercostal arteries in the thoracic wall?

• To supply blood to the heart

• To supply blood to the abdominal organs

• To supply blood to the brain

• To supply tissues within intercostal spaces and overlying skin

From which major artery do the posterior intercostal arteries originate?

• Pulmonary artery

• Aorta

• Carotid artery

• Subclavian artery

Which artery gives rise to the anterior intercostal arteries?

• Femoral artery

• Brachial artery

• Internal thoracic artery

• External thoracic artery

What is the significance of the anastomosis between anterior and posterior intercostal arteries?

• It forms collateral circulation

• It causes blood to flow only in one direction

• It prevents blood flow to the thoracic wall

• It blocks blood supply to the heart

How are intercostal arteries described in terms of their arrangement?

• They are unpaired and random

• They are paired and segmental

• They are single and continuous

• They are paired and continuous