Anatomy & Physiology 📝 Notes

Read moreThe Endocrine System…. Tied into the Cardiovascular System 💜 Always remember: ♥️ Arteries output ♥️ Veins return ⭐️ BEFORE blood is sent to the lungs, it is poorly oxygenated and is indicated by BLUE on the study guides. ⭐️ After the blood has cycled through the lungs it is oxygen rich and