A Voyage to the Lungs
HS130, Section# 04
Unit 4 Assignment
April 14, 2013
Welcome to the Fantastic Voyage! Today we are going to be entering the right femoral vein of a healthy female. I am your pilot Kierra Lewis. While we embark on this journey, make sure that you keep your hands and feet inside the submarine at all times. Fasten your seat belts and let’s start our journey! We will begin our journey in the femoral vein. As you can see the femoral vein is a blood vessel that is responsible for carrying blood from the leg back to the heart via the iliac veins. This is the largest vein in the groin area. Any blockages in this vein can lead to serious medical problems. Oh no! Passengers we have just gotten word that there is a bacterium that is invading the lower lobe of the right lung! So, we will be travelling there via the pulmonary artery. We will get to see what actually happens when a bacterium invades the body and the defense mechanisms that our bodies take to get rid of those invading bacteria. Now we will be leaving the femoral vein and entering the inferior vena cava. As you all can see the inferior vena cava is a large vein that goes through the abdomen. It collects blood from the lumbar veins, hepatic veins, gonadal veins, renal veins, and the phrenic veins. We are now reaching the end of the inferior vena cava and we will now be entering the right atrium that will lead us into the heart. We have now arrived to the right atrium of the heart. As you can see looking out of your windows, the right atrium of the heart receives de-oxygenated blood from the body via the superior vena cava and the inferior vena cava. So everything is connected in terms of blood flow so that the blood will return to the right atrium of the heart. You can also see the contractions that the atrium is making. This is due to the sinoatrial node that sends impulses to the cardiac muscle tissue which causes it to contract in a wave-like manner....
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