Respiratory System (A&P)

What term describes the physiology of the respiratory system?

• Gas exchange

• Capillary exchange

Which gas is supplied by the respiratory system?

• O₂

• CO₂

• H₂O

• N₂

• NH₃

Which gas is removed by the respiratory system?

• O₂

• CO₂

• H₂O

• N₂

• NH₃

The lungs are composed of many air sacs called _

• Alveoli

• Microvilli

• Capillaries

• Bronchioles

The alveoli exchange gases with _

• Capillaries

• Arteries

• Veins

• All answers are correct

Which of the following describes the direction of O₂ movement in gas exchange?

• Alveoli --> blood stream

• Blood stream --> alveoli

In gas exchange, O₂ binds to _ in capillaries

• RBCs

• WBCs

• Platelets

In gas exchange, O₂ binds to RBCs in capillaries. More specifically, it binds to _ proteins attached to RBCs.

• Hemoglobin

• Keratin

• Fibrin

• Myosin

• Actin

In gas exchange, O₂ binds to RBCs in capillaries. More specifically, it binds to hemoglobin proteins attached to RBCs. Even more specifically, it binds to _ ions attached to hemoglobin.

• Fe²⁺

• Na⁺

• K⁺

• Ca²⁺

• Cl^-

Why do all body cells require O₂ delivery by RBCs?

• It allows for ATP synthesis in cellular respiration

• It allows for CO₂ synthesis in cellular respiration

• It allows for ATP synthesis in photosynthesis

• It allows for CO₂ synthesis in photosynthesis