Chapter 3: Breathing&Respiration Flashcards
Describe the Steps of inhalation
1) external intercostal muscles contract
2) diaphragm contracts
3) volume of thoracic cavity increases
4) pressure gradient is created
5) Atmospheric pressure is bigger
6) air is taken in down pressure gradient from the atmosphere into the lungs
Describe the steps of exhalation
1) external intercostal muscles relax
2) diaphragm relaxes
3) volume of thoracic cavity decreases
4) pressure gradient is created
5) atmospheric pressure is smaller
6) air is taken in down the pressure gradient from the lungs to the atmosphere
Where does aerobic respiration occur?
Mitrachondria
Where does anaerobic respiration occur?
Cytoplasm
Word equation for aerobic respiration
Glucose+Oxygen->carbon dioxide+water
C6H2O6+6O2->6CO2+6H2O
Word equation for anaerobic respiration?
Glucose->Lactic acid(+energy)
When does anaerobic respiration take place?
When there isn’t enough oxygen for aerobic respiration
What is the name of the toxic acid that is created through anaerobic respiration?
Lactic acid
Why do we need energy?
Growth+Repair
Movement
Control of body temp.
Route of oxygen
Enters through mouth, travels down the trachea, enters the lungs through the bronchai that split into bronchioles. In the alveoli oxygen is transferred into our blood so it can travel around our body
What happens after blood is pumped around our bodies
After the arteries, they branch into capillaries where oxygen leaves RBCs and the plasma leaks out to form tissue fluid. It carries oxygen to the cells and the waste products dissolve into the tissue fluid. This fluid then returns to different capillaries and the waste then dissolves in plasma into the veins. The veins take the deoxygenated blood back to the heart and that blood is pumped from the heart to the lungs. The lungs then exhale C02
