Explain How Gas Exchange Occurs In The Alveoli

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1. List the structures and functions of the cardiovascular system. Do not forget blood and vessels are part of this system.
Heart, arteries, veins, capillaries, and blood. The heart pumps the blood to transport nutrients, oxygen and hormones to cells throughout the body and removes metabolic wastes.
2. List the structures and functions of the lymphatic system.
Lymph, lymphatic vessels (lymphatic capillaries) lymphatic ducts, lymphoid organs, lymphoid nodules and lymphocytes return fluid to all parts of the body except the central nervous system. Transports hormones, nutrients and waste products to the blood stream through the lymphatic vessels.
3. List the structures and functions of the respiratory system.
Nose, mouth, pharynx, larynx, epiglottis, vocal cords, …show more content…
Explain the electrical conduction pathway of the heart.
It starts with the sinoatrial node (SA node) and splits into four paths. One path goes to the left atrium. The other three paths that start in the right atrium go to the atrioventricular node (AV node) which than turns into one path that eventually splits into two, one of which heads to the right ventricle and the other heads to the left ventricle.
8. Explain how gas exchange occurs in the alveoli.
Alveoli are surrounded by a dense network of capillaries. The walls of the alveoli are thin and moist. When oxygen is taken into the lungs, a diffusion gradient occurs between the capillaries which contain carbon dioxide and the alveoli which contains oxygen. The carbon dioxide will move into the alveoli and the oxygen will move into the blood in the capillaries. This is facilitating by the moisture in the alveoli walls which will dissolve the oxygen as well as the thin walls which will facilitates fast diffusion. Thus, gaseous exchange is said to have occurred.
9. Name two common disorders of the cardiovascular system. How do they impact the system's function?
Myocardial infraction- blockage of the blood flow to the heart. It kills the heart
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