Question 1
Draw three graphs showing how the following change during normal inspiration and expiration:
A. alveolar pressure
B. intrapleural pressure
C. volume of air moved
Question 2
A. Omar is snorkeling (surface swimming with a tube in his mouth to maintain breathing while his face is in the water). The snorkel tube is 40 cm in length and 1.2 cm in radius. How does this affect Omar's breathing? Calculate the increase in relative resistance contributed by the snorkel tube.
B. What is dead space and how does that affect snorkeling? Explain your answer, assuming the snorkel tube is a round cylinder and cylinder volume is pr
2L. How does the snorkel tube affect alveolar ventilation (assume a ventilation rate of 12 breaths/min, tidal volume of 500 mL, and normal dead space volume of 150 mL)? If normal alveolar ventilation is 4200 mL/min, how must Omar breathe during snorkeling compared to normal?
C. Omar loves snorkeling, but wishes he could go a little deeper. He decides to create a longer snorkel tube to try to achieve this desire. He isn't sure how radius figures in, so he makes two tubes of 60 cm length, one with a 1.2 cm radius and the other with a 2 cm radius. What are the relative resistances of these two new tubes? Do you think he will be able to snorkel well with either of these tubes? Explain.
chitinous, exoskeletal surface of a male louse
A tracheotomy tube in place, inserted through an opening in the front of the neck and anchored withi
Appendectomy. The appendix and cecum are brought through the incision to the surface of the abdomen.
Nasogastric tube
Perform Adult Rescue Breathing and One-Rescuer or Two-Rescuer CPR
Surface winds travel at an angle across isobars, toward low pressure.