ANP 1105 Lecture Notes - Lecture 12: Meninges, Intercostal Arteries, Popliteal Artery

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1105
• Professor: Simon Lemaire

Document Summary

Brings the blood into close contact with the alveoli of the lungs and ensure gas exchange. Path of blood in the pulmonary circuit: Right atrium right ventricle pulmonary trunk right or left pulmonary arteries lobar arteries (3 in the right lung, 2 in the left lung) pulmonary capillaries pulmonary veins left atrium. In the pulmonary capillaries, the oxygen moves from the alveolar air to the blood and the carbon dioxide moves from the blood to the alveolar air. As gases are exchanged, and the oxygen content of the blood rises, the blood becomes bright red. The pulmonary capillary beds drain into venules, which join to form the two pulmonary veins exiting from each lung. The 4 pulmonary veins complete the circuit by unloading their precious cargo into the left atrium of the heart. Pulmonary arteries carry oxygen-poor blood, carbon dioxide rich blood while pulmonary veins carry oxygen-rich blood.