Cells
What type of cell transports oxygen?
red blood cell
What is the first body structure that air goes through?
nostrils/mouth
Where does external respiration occur?
alveoli
What allows the oxygen to pass through?
thin membranes
What is the energy molecule in organisms?
ATP
What is the name of the oxygen binding protein?
Hemoglobin
What is the last body structure that air goes through?
alveoli in lungs
Where does internal respiration occur?
body tissues
What allows for diffusion?
pressure gradients
What is the source of glucose that we use to make energy>
Food through digestion
What allows cells to stay alive?
oxygen
When the air meets the bronchi, where does it go next?
bronchioles
The respiratory system exchanges what two gases?
oxygen and carbon dioxide
What is not required to move oxygen or carbon dioxide across membranes?
energy
What type of cell transports oxygen around the body?
Red blood cells (RBCs)
How much oxygen is taken up by RBC's?
98%
The air moves through how many structures until it gets to the alveoli?
7
What is the waste product of respiration?
carbon dioxide (CO2)
Oxygen moves from the alveoli to what?
blood in the capillaries
What is the muscle underneath our lungs that helps us breathe>
Diaphragm
Where does the oxygen that's not taken up by red blood cells go?
It remains dissolved in body tissues (lungs)
What happens in the alveoli, the final body structure that air moves through?
gas exchange between 02 & c02
What is the primary function of the respiratory system?
to exchange gases along a permeable membrane: CO2 & O2
What maximizes the diffusion of gases?
Anatomy and large surface area of lungs
Why do we breathe more when we exercise?
We use oxygen to make energy via cellular respiration. When we use more energy, we need more oxygen.