Gas exchange in humans

• What is the main focus of Topic 3 in the study material?

  Gas exchange in humans
• What are the learning objectives mentioned in the study material?

  Gas exchange and structure of the gas exchange system
• What muscles are involved in the ventilation process?

  Intercostal muscles
• What is the role of alveoli in gas exchange?

  They facilitate the exchange of oxygen and carbon dioxide
• What is the process of gas exchange in the alveoli?

  • Oxygen diffuses from alveoli to blood
  • Carbon dioxide diffuses from blood to alveoli
  • Exchange occurs due to concentration gradients
• What does the flow diagram in Figure 9 illustrate?

  How oxygen moves through the gas exchange system
• What types of questions are included in the practice section of the study material?

  • Application questions
  • Fact recall questions