Respiration And Breathing Flashcards
What is the difference of respiration and breathing?
Breathing- the inhalation of oxygen and the exhalation of carbon dioxide
Respiration- the release of energy from a cell
What is the word equation for aerobic respiration?
Oxygen + glucose —> carbon dioxide + water
Where does respiration occur?
In the mitochondria
What is the route of breathing?
When we breathe in, air enters through our nose and mouth. It then goes down the trachea. The trachea splits into two tubes called the bronchi. These then divide further into bronchioles. Eventually it ends up in the microscopic air sacs called the alveoli.
Name the 9 parts of the respiratory system:
Larynx, trachea, rib cage, intercostal muscles,bronchi, bronchioles, alveoli, pleural fluid/membrane, diaphragm
What happens when we inhale?
The diaphragm contracts, moving down and in, the intercostal muscles contract, pulling the ribs up and out, these both make the thorax volume increase, and the pressure in the lungs decreases also
What happens in exhalation?
The ribs move down and in, the diaphragm moves up to become dome shaped, this makes the chest smaller in volume and increases the pressure in the lungs so air is forced out.
In inhalation what happens to the diaphragm?
It contracts
In exhalation does the diaphragm contract or relax?
The diaphragm relaxes
What happens to the volume of the thoracic cavity when the ribs move up and out?
The volume increases
What happens to the pressure inside the lungs when the external intercostal muscles contract?
The pressure decreases
How does the contraction of the diaphragm change the volume and pressure of the thorax capacity?
Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges. This contraction creates a vacuum, which pulls air into the lungs. Upon exhalation, the diaphragm relaxes and returns to its domelike shape, and air is forced out of the lungs.
What is gas exchange?
During gas exchange oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs. This happens in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.
What is a tissue?
A group or layer of cells that work together to perform a specific function.
What is anaerobic respiration?
Anaerobic respiration occurs without oxygen and releases less energy but more quickly than aerobic respiration.
