Respiration Flashcards
State the word equation for respiration
Oxygen + Glucose —> Carbon Dioxide (CO2) + Water + Energy
It means a series of chemical changes that take place in cells to release energy
What is the respiratory system
The system of organs and tissues that take air into the body to make oxygen available for the cells.
List the part of the respiratory system
Nasal Cavity, Epiglottis, pharynx, larynx, trachea, Lungs (bronchi, bronchiole, alveolus). diaphragm, intercostal muscle
Name the gas that is taken into the body
Oxygen
Name the part of the respiratory system where gas exchange takes place
Alveoli
What is the advantage of having lungs with many small alveoli compared to having lungs like 2 balloon with no alveoli
Larger surface area
How many alveoli make up you lungs
500 Million
Air rich in oxygen that is breathed in enters the alveoli. Air rich in carbon dioxide is breathed out. Describe the event that occur.
Via gas exchange across the thin walls of the alveoli. Moves by a process called Diffusion. Oxygen into the blood. Carbon dioxide waste move from cells into blood and diffuses into alveoli and is breathed out during next exhale.
Describe the function of the diaphragm
When you inhale the diaphragm contracts and flattens which increased the volume inside your chest - lungs expand and air pressure decreases.
Reverse for exhale. - diaphragm arches up - volume returns to normal, air pressure increased, air expelled.
What is the diaphragm
Its is a sheet of muscle that separates the chest from the abdomen.
Explain why humans die within minutes if they cant breathe but they can live for days without food or water.
Because a build up of carbon dioxide harms your body. It would harm your body if you did not get rid of it.
What happens to your breathing rate when you start walking and then up to running and then stop. Describe what is happening.
Rate will increase when walking and then more again when running.
The more energy your body requires then greater the demand for oxygen which is only achieved though an increased breathing rate.
What is the percentage of the following gases (oxygen, nitrogen, carbon dioxide, Other) in:
a) inhaled air;
b) exhaled air
a: oxygen 21%, carbon dioxide 0.004%
b) oxygen 17%, carbon dioxide 4%
The rest are the same
Label the parts of the respiratory system (use a drawing)
drawing
What is the difference between breathing and respiration
Breathing is the action of inhaling and exhaling air - breathing is involuntary.
Respiration is the chemical process (Oxygen + Glucose —> Carbon Dioxide (CO2) + Water + Energy)
Propose the advantage to functioning of your body of having many blood capillaries surrounding the alveoli
Increased gas exchange
What part of the respiratory system would be affected by the condition called bronchitis
Bronchioles
