Respiratory system Flashcards
How do the nasal concha bones help clean the inhaled air?
Spin the dirt out
How does the nasal cavity/sinus “warm” and “humidify” the inhaled air?
Very thin epithelium places capillaries close to the air
When you inhale air, what muscle performs most of the work?
Diaphragm muscle
Air that enters the region of the pharynx will enter the ___ next during a normal inhalation.
Larynx
The larynx works to “make sound” by placing the vocal cords towards the ____ during exhalation.
Middle of the air flow
Which of these regions of the respiratory system forms the “Adam’s apple”?
Larynx
Which of these areas of the respiratory system is the site of gas exchange?
Alveolus
In order to allow the oxygen in air (as a gas) to diffuse into the liquid that lines the alveolus, one of the cells that form the aveolus secretes a special protein that “breaks” the weak bonds between water molecules of this liquid lining. What is this “water cohesion-breaking” protein called?
Surfactant
The cell of the alveolus that secretes the special protein that “breaks” the cohesive bonds of the water lining the alveolus is called a ____ cell.
Type two cell
In the alveolus, oxygen is not the only gas that is exchanged with the air. What is the other gas that is exchanged from the blood into the air using the respiratory system?
Carbon dioxide
At the very general level, the diffusion gradient (high to low) for oxygen actually favors the loss of oxygen from the blood into the air. How does the body “reverse” this, creating a situation where oxygen actually wants to enter the blood from the air despite the “wrong” overall gradient?
Plasma at the very edge of the alveolar capillary has less oxygen than plasma in the middle of the capillary
Which of these is the sticky substance that helps to clean air in the nasal sinus?
Mucus
