Respiratory System Flashcards
What is the technical term for lungs?
Pulmonary
What is the technical term for air sac?
Alveolus (singular), alveoli (many)
What type of blood goes to the lungs?
Deoxygenated
What is the relative levels of oxygen and carbon dioxide in deoxygenated blood?
Low oxygen and high carbon dioxide
How does oxygen and carbon dioxide move in and out of the blood into the air sac?
The walls of the blood capillaries and walls of the air sac (alveolus) are very thin allowing oxygen and carbon dioxide to pass through easily with diffusion. Oxygen and carbon dioxide move from high concentration to low concentration. Oxygen moves from alveolus to blood capillaries and carbon dioxide moves from blood capillaries to alveolus.
What is the movement of the diaphragm and rib cage when you inspire and breathe in?
The diaphragm contracts (tightens) and moves downward when inhaling. The rib cage contracts and moves both upward and outward when inhaling.
What is the definition of
diffusion?
High concentration to low concentration.
Why is the trachea the main tube that air passes through to the lungs which it branches into 2 bronchi leading to the lungs and then also each branch into smaller tubes called bronchioles?
.
Why does the bottle lung model relate to real lungs?
Bottle represents diaphragm
Straw represents trachea
Balloon represents the lung
Plastic sheet represents breathing
How does the air pressure change in the bottle when the plastic sheet is pulled on the lung model?
When the sheet is pulled there is less air pressure allowing the balloon (lungs) to fill with air. When the sheet is pushed there is higher air pressure causing the balloon to deflate. Because you are breathing in and out.
How is the normal volume of air that you breathe in and out in a normal breath is your tidal volume?
.
How does oxygen and carbon dioxide get exchanged in and out of the blood respectively in the alveoli?
Semi-permeable lungs.
