Respiratory and Circulatory Systems Flashcards
Function of the Respiratory System
The system functions to bring oxygen in and carbon dioxide out.
Function of the Circulatory System
The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.
Trachea
It is a long, U-shaped tube that connects your larynx (voice box) to your lungs. It’s main function is to carry air in and out of your lungs. Because it’s a stiff, flexible tube, it provides a reliable pathway for oxygen to enter your body.
Bronchi
The bronchi are the large tubes that connect to your trachea (windpipe) and direct the air you breathe to your right and left lungs. They are in your chest. At the end of the bronchi, the bronchioles carry air to small sacs in your lungs called alveoli.
Alveoli
The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out. They look a bit like a bunch of grapes at the end of the bronchial branches.
Artery
Arteries, a critical part of your cardiovascular system, are blood vessels that distribute oxygen-rich blood to your entire body. These tube-like vessels and the muscles inside them ensure your organs and tissues have the oxygen and nutrients they need to function.
Vein
Veins are blood vessels that carry oxygen-poor blood to your heart. They are part of your circulatory system. They work together with other blood vessels and your heart to keep your blood moving.
Capillaries
They are delicate blood vessels that exist throughout your body. They transport blood, nutrients and oxygen to cells in your organs and body systems. Capillaries are the smallest blood vessels in your vascular system.
Pulmonary Veins
Pulmonary veins are blood vessels that carry oxygen-rich blood from your lungs to your heart. They are a part of the body’s pulmonary circuits that is a system of blood vessels that moves blood between your heart and your lungs.
What is the difference between veins and arteries?
Arteries carry blood away from the heart, and veins carry blood towards the heart. With the exception of pulmonary blood vessels, arteries carry oxygenated blood and veins carry deoxygenated blood. Arteries have thick walls with muscle tissue. Veins have thinner walls and use valves to keep your blood flowing.
How does oxygen move through the respiratory system?
Air that is breathed in moves down the trachea, into the lungs, through the bronchi then bronchioles then into the alveoli (Air sacs)
Describe the movement of oxygen and carbon dioxide to and away from cells
During gas exchange oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs. This happens in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.
Order that oxygen goes through body.
Oxygen —> Mouth/Nose —> Pharynx —> Trachea —> Bronchus —> Bronchiole —> Alveoli (Diffuses into blood) —> Capillary —> Pulmonary Vein —> Left Atrium —> Left Ventricle —> Aorta —> Capillaries
Order that carbon dioxide is removed from body
CO2 in cell diffuses into blood —> Capillary —> Vena Cava —> Right Atrium —> Right Ventricle —> Pulmonary Artery —> Capillaries —> CO2 diffuses into alveoli —> Bronchiole —> Bronchus —> Trachea —> Phraynx and Mouth / Nose —> CO2 exhaled
What is the pharynx
The pharynx (throat) is the passageway leading from the mouth and nose to the esophagus and larynx. The pharynx permits the passage of swallowed solids and liquids into the esophagus, or gullet, and conducts air to and from the trachea, or windpipe, during respiration.
