Which of the following does NOT describe the respiratory membrane? Choose the best answer. Question 1 composed largely of thin layers of squamous cells air-blood barrier where gas exchange occurs by simple diffusion composed of pseudostratified ciliated columnar cells contains surfactant secreting cells composed of the alveolar and capillary walls and their fused basement membranes Which of the following statements describe the normal changes that occur in respiratory system functioning from infancy to old age? Select all correct statements. Question 2 Premature infants have problems keeping their lungs inflated because of lack of surfactant in their alveoli. In old age, the thorax becomes more flexible, and lungs become more elastic. Many old people tend to become hypoxic during sleep and exhibit sleep apnea. The lungs are completely mature at birth. Micah visits his doctor complaining of a frontal headache and pressure over his cheekbones and eyes. He is congested and has a nasal discharge. Micah's voice has an odd nasal sound. What is the doctor's diagnosis of Micah's condition? O tonsillitis Orhinitis O sinusitis Opleurisy Question 3 Turner, a 5-year-old boy, is experiencing difficulty breathing through his nose, pain on swallowing, and pain and discomfort in his lungs. Turner most likely has O sinusitis Orhinitis Obronchitis Otonsillitis Question 4 In this activity, you will follow oxygen on its path from the lungs to the body tissues. To review how oxygen is transported in the body, watch this BioFlix animation: Gas Exchange: Transporting Oxygen. Part A - Oxygen transport Drag each label to the appropriate location on the flowchart. ? Oxygen diffuses from the alveoli into surrounding capillaries. 2 Oxygen binds to a molecule of hemoglobin. ? Oxygen is carried through blood vessels to a capillary. 3 Question 5 ? Oxygen diffuses from the blood to the body's tissues. Oxygen enters a red blood cell. ? 5 ? reset ? help