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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Motor neurons that innervate the head and neck are located in the motor nuclei of cranial nerves and in the reticular formation
Indicate whether this statement is true or false.
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
Large, lipid-insoluble molecules cross capillary walls by ___.
What will be an ideal response?
If a stimulus created a membrane potential of -40 mV during the absolute refractory period, which of the following would occur?
A. A second action potential begins B. A seres of action potentials occur C. The action potentials end normally D. Sodium inactivation gates open