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What is the area of the lungs where oxygen and carbon dioxide are exchanged quizlet?
The alveoli are the tiny sacs at the ends of the tubes that run throughout the lungs. Oxygen and carbon dioxide are exchanged in the alveoli.
How many lobes are there in the lungs?
The right and left lung anatomy are similar but asymmetrical. The right lung consists of three lobes: the right upper lobe (RUL), the right middle lobe (RML), and the right lower lobe (RLL). The left lung consists of two lobes: the left upper lobe (LUL) and the left lower lobe (LLL).
Which is the main organ for gas exchange in the respiratory system?
lungs
Lung tissue consists mainly of alveoli (Figure 16.2. 6). These tiny air sacs are the functional units of the lungs where gas exchange takes place. The two lungs may contain as many as 700 million alveoli, providing a huge total surface area for gas exchange to take place.
What is the part of lungs?
The lungs are a pair of spongy, air-filled organs located on either side of the chest (thorax). The trachea (windpipe) conducts inhaled air into the lungs through its tubular branches, called bronchi. The bronchi then divide into smaller and smaller branches (bronchioles), finally becoming microscopic.
Where does gas exchange take place in the lungs?
Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
Where does oxygen go after leaving the lungs?
The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out. Oxygen breathed in from the air passes through the alveoli and into the blood and travels to the tissues throughout the body.
Where does oxygen and carbon dioxide move in the body?
As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
What is the function of oxygen in the respiratory system?
The rate at which oxygen is used by the body is one measure of the rate of energy expended by the body. Breathing in and out is accomplished by respiratory muscles. The function of the respiratory system is to move two gases: oxygen and carbon dioxide.