BI2331: THE RESPIRATORY SYSTEM

Flashcards outlining key concepts of the respiratory system, including its functions, mechanics, and related disorders.

The main functions of the respiratory system include providing for gas exchange and __________ of inspired air.

Filtration

Gas exchange occurs between air in the lungs and __________.

blood

Factors determining arterial oxygen content include the composition of inspired air, alveolar ventilation, and oxygen __________ between alveoli and blood.

diffusion

__________ is a term used to describe the pressure difference divided by airway resistance.

Airflow

Obstructive lung disorders are characterized by the reduction of __________ into and out of the lungs.

airflow

In asthma, changes in airway structure include airway___________ and increased mucus production.

hypersensitivity

Fick's Law describes gas exchange across the __________/capillary interface.

alveolar

The condition of pulmonary oedema results in increased __________ pathway, affecting gas exchange.

diffusion

The mechanics of ventilation include contraction of the diaphragm and external intercostal muscles during __________.

inspiration

The __________ pressure increases during relaxation of the diaphragm and external intercostal muscles, aiding in expiration.

intrathoracic

__________ lung disorders are associated with restricted lung volumes due to conditions such as pulmonary fibrosis and obesity.

Restrictive

The rate of gas exchange can be affected by factors such as __________ of the gas in liquid and temperature.

solubility

In emphysema, the alveolar septa are destroyed, leading to reduced __________ for gas exchange.

surface area