What is the function of the alveoli?
A. To carry air to and from the lungs
B. To warm and moisten the air
C. To trap dirt particles and bacteria
D. To exchange gases with the blood
Select your answer:
Topics:
Skin Structure Types of Medical Reports Population Genetics Body Fluids History of Immunology Knee Anatomy Brain Skeletal Pathology Cell & Bond Cell Transport Surgical Nutrition Virus, Bacteria, Immunity Sources Of Food Pulmonary System Nutrition and Human Digestive SystemOther quiz:
Pollution › ViewThe main human activity that releases greenhouse gases is
A. using bottled water
B. burning fossil fuels
C. texting on cellphones
D. eating meat
The Vascular System and Blood Flow › View
What is the main role of the nervous system in the return of blood to the heart?
A. Assisting in the distribution of blood to different organs
B. Pushing or massaging blood back to the heart with each muscle contraction
C. Causing veins to slightly constrict to return more blood to the heart
D. Creating a difference in pressure between the veins in the chest and abdominal cavities