Respiratory System (Old)
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40 Terms
What does the loudness of a voice depend on?
Force with which air rushes over the vocal cords
What is the function of Type II cells in the alveoli?
Secrete surfactant
What does the pressure inside the lungs have to be for the air to move out of the lungs?
Greater than atmospheric pressure
What is the the amount of air we normally breath called?
Tidal Volume
What is the largest amount of air we can breathe out at one time called?
Vital capacity
Where do nerve impulses that control inspiration (taking air in lungs) come from?
Respiratory Center
What does inspiration mean in the context of the respiration system?
The process of taking air into the lungs.
Where is the respiratory center located?
Medulla oblongata
What is the amount of air you can force in after tidal volume called?
Inspiratory reserve
What is oxygen and carbon dioxide exchanged through the cell membranes in the lungs by?
Diffusion
What provides the greatest surface area for gas exchange?
Alveoli
When the air leaves the trachea, where does it pass through?
Bronchi
What are the tiny sacks in the lungs called?
Alveoli
What happens to carbon dioxide in the alveoli?
The carbon dioxide passes out of the blood.
What happens to the pressure in the chest when we exhale?
It decreases.
During exercise working muscles need more
Oxygen (but also technically water)
Where does gaseous exchange take place in the lungs?
Alveoli
What is #1?
The naval cavity
What is #2?
The oral cavity
What is #3?
Larynx
What is #4?
Lung (or could be pleural cavity)
What is #5?
Bronchi
What is #6?
Diaphragm
What is #7?
Pharynx
What is #8?
Trachea
What is #9?
Bronchus
What is #10?
Bronchioles
What is the function of our lungs?
Your lungs bring oxygen into your body, which your cells need to function. They also get rid of carbon dioxide, a waste product that your body doesn't need.
What system sends a signal to the respiratory system?
Autonomic nervous system
What happens when you breathe air in?
The intercostal muscles contract, and the diaphragm flattens to make more space for the lungs to expand.
What are intercostal muscles?
Muscles which are between the ribs.
True or false? The lungs are spongy?
True. They are not hollow like balloons like most people think.
What happens when you breathe out?
The intercostal muscles relax, and the diaphragm balls up.
How often does one breathe per minute?
15-25 times a minute
What protects the respiratory system?
The sternum, ribs and vertebrae
What is the movement of gases into the bloodstream know as?
Pulmonary diffusion
What is pulmonary diffusion?
Movement of gases into the bloodstream
What is intrapulmonic pressure?
The pressure inside the lungs
What is intrapleural pressure?
The pressure within the pleural cavity, which is the space between the two layers of pleurae (membranes) surrounding the lungs
What does a barometer do?
It measures air pressure