Answer the following statements true (T) or false (F)
1. During inspiration, the diaphragm contracts and moves up into the thoracic cavity.
2. During inspiration, the size of the chest cavity enlarges.
3. If atmospheric pressure is 760 mm Hg, the pressure inside the chest cavity must be below 760 mm Hg for inspiration to occur.
4. Quiet expiration requires the work of both the intercostal muscles and the abdominal muscles.
5. In some lung diseases, the lungs lose their elasticity and their ability to recoil. This would have the greatest impact on expiration.
1. FALSE
2. TRUE
3. TRUE
4. FALSE
5. TRUE
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The upper abdominopelvic regions include the:
a. right and left hypochondriac and umbilical b. right and left lumbar and umbilical c. right and left iliac and epigastric d. right and left hypochondriac and epigastric
If a stimulus created a membrane potential of -40 mV during the absolute refractory period, which of the following would occur?
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