Gas Exchange

Respiratory SA is proportional to body volume/weight

• True

• False

How is gas exchanged through respiratory membranes?

• Osmosis

• Bulk transport

• Diffusion

• Active transport

Gasses must diffuse across

• Epithelial cells

• Mucosal membranes

• Boundary layers

Fill in the blank

[___] are the dead-end air sacs that are respiratory surface of lung

• Bronchioles

• Alveoli

• Capillaries

• Arteries

Oxygen bound to hemoglobin contributes to partial pressure

• True

• False

Hemoglobin is found in

• Animals

• Plants

• Fungi

• Bacteria

What are some factors that affect the binding of hemoglobin and oxygen?

Which is the least saturated with O2?

• Lungs during exercise

• Lungs at rest

• Tissues at rest

• Tissues during exercise

What is an erythrocyte?