Respiratory System Flashcards
How does the brain direct the rate of brathin?
By responding to internal stimuli that indicates how much oxygen is needed by the body parts
When does the breathing rate increase?
When carbon dioxide concentration increases, indicating the body needs more oxggyen
Define inhalation
Taking in air into the lungs
State of a diaphragm in inh and exh
Contract in inh
Relaxes in exh
Asthma
Pathway Irritated, bronchioles constrict
Bronchitis
Pathway infected, results in coughing and production of mucus
E,physema
Alveoli break down, reduced surface area for gas exchange, causing reduce in gas exchange
Pneumonia
Infection causes mucus around aleveoli
Pulmonary Tuberculosis
Bacterium infection, results in less elasticity of bloob capillaries, decreasing exchange of gas rate between blood and air
Lung cancer
Uncontrollable growth of cells in lung tissue.
Internal and External changes in gas
INTERNAL: gas exchange between blood and body cells
EXTERNAL: gas exchange between atmosphere and blood in lungs