Breathing! Flashcards
What is inhalation?
Inhalation is the process of breathing in and taking in oxygen from the air.
What is exhalation?
Exhalation is the process of breathing out and expelling carbon dioxide from the body.
What is inspired air?
air that you breathe in
What is expired air?
air that you breathe out
What happens to a gas when the volume of its container decreases?What is an example of this?
When the volume of a container holding a gas decreases, the pressure increases. Air is a gas.
What happens to the intercostal muscles during inhalation?
The intercostal muscles between the ribs contract or get shorter.
What happens to the ribs during inhalation?
The ribcage gets pulled upwards and outwards.
What happens to the diaphragm during inhalation?
The muscles in the diaphragm contract, pulling it downwards.
What happens to the lung volume during inhalation?
The lung volume increases as a result of the two movements.
What happens to the air pressure during inhalation?
the pressure decreases(low pressure)
How is air forced into the lungs?
When the volume increases, the chest cavity becomes low-pressure, so high-pressure air from outside is forced into the lungs through nostrils,
What happens to the intercostal muscles during exhalation?
The intercostal muscles between the ribs relax or return to their normal size.
What happens to the ribs during exhalation?
The ribcage drops down into its natural position
What happens to the diaphragm during exhalation?
The muscles in the diaphragm relax, allowing it to become its normal, domed shape.
What happens to the lung volume during exhalation?
The lung volume decreases as a result of these two movemnts.
