Respiration And breathing Flashcards
What is respiration?
Respiration is the release of energy from food
Give the equation for respiration
Glucose + oxygen = energy + carbon dioxide + water vapour
What does aerobic respiration require ?
It requires the presence of food and oxygen
What is the function of the larynx ?
It allows us to make sounds
What is the function of the trachea ?
It passes air to the lungs
What is the function of the rings of cartilage
It keeps the trachea permanently open
What is the function of the bronchus ?
It carries air from the trachea to and from the lungs
What is the epiglottis ?
It stops food from going down the lungs
What is the function of the bronchioles ?
They are tiny tubes taking air to the aveoli
What is the function of the aveoli ?
Thy are tiny air scas through which gas exchange takes place via the blood capillaries
What is the function of the diaphragm
It is a sheet of muscle that forces the air to move into and out of the lungs
What is the equation for gas exchange in the alveoli ?
Oxygen
Describe the gas exchange in the alveoli
Oxygen in the alveolus moves out into the blood.
The blood carries the oxygen to each and every living cell.
When the oxygen rich blood reaches a cell , the oxygen moves out of the blood and into the cell.
The cell wastes of respiration ( carbon dioxide + water) move out of the cell and into the blood.
This blood is then returned to the alveoli , where carbon dioxide and water move out of the blood and into the alveoli.
From the alveoli , the carbon dioxide and water vapour are breathed out by the lungs
