Gas Exchange and Respiration Flashcards
What happens to the intercostal muscles during inhalation and exhalation?
Inhalation: Contracts
Exhalation: Relaxes
What happens to the ribs during inhalation and exhalation?
Inhalation: moves up and out
Exhalation: moves down and in
What happens to the pressure in the thorax during inhalation and exhalation?
Inhalation: Decreases
Exhalation: Increases
What happens to the diaphragm during inhalation and exhalation?
Inhalation: Contracts and flattens
Exhalation: Relaxes
What happens to the volume in the thorax during inhalation and exhalation?
Inhalation: Increases
Exhalation: Decreases
Which contains more Oxygen: Inhaled or Exhaled air?
Inhaled air
Which contains more Carbon Dioxide: Inhaled or Exhaled air?
Exhaled air
Which is warmer: Inhaled or Exhaled air?
Exhaled air
Which is moister: Inhaled or Exhaled air?
Inhaled air
What are the parts of the Ventilation system
Nose, Mouth, Larynx, Trachea, Thorax (Bronchi, bronchioles, alveoli, ribs, intercostal muscles, heart, pleural membrane, diaphragm)
What is the thorax?
The main chest cavity.
What is the equation for aerobic respiration?
glucose+oxygen=carbon dioxide+water (+ENERGY)
C6H1206+6O2=6CO2+6H2O (+ENERGY)
Does the air in the alveoli and the direction of blood flow go the same way or opposite ways?
Opposite
What is the structure of the Alveoli?
The air sac has one cell thick walls, and capillaries surrounding it, which allows for easy gas exchange.
What are four properties the lungs have for gas exchange?
- Many Alveoli
- Thin Walls
- Moist
- Blood continually flows through capillaries
How do many alveoli help increase the rate of gas exchange?
Larger Surface Area
How does moisture help increase the rate of gas exchange?
Gases Dissolve
What gas diffuses from capillaries to alveoli?
Carbon Dioxide
How does blood continually flowing through the lungs help increase the rate of gas exchange?
Concentration gradient is always maintained
How do thin walls help increase the rate of gas exchange?
Short Diffusion Distance
What gas diffuses from alveoli to capillaries?
Oxygen
What gas diffuses from the body’s cells to the capillaries?
Carbon Dioxide
What gas diffuses from capillaries to the body’s cells?
Oxygen
What cells/structures helps keep your airways clear?
Mucous + Ciliated Cells