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W14

Chemical digestion requires the secretion of _____ into the lumen of the GI tract. digestive enzymes and bile
During which stage of swallowing is there a risk of food entering respiratory pathways? Oropharyngeal
The hormone that inhibits gastric muscle, slowing passage of food into the duodenum, is called gastric inhibitory peptide
Which of the following is not one of the openings that must be blocked when food moves from the pharynx into the esophagus? Oropharynx
Which of the following combinations in arterial blood could cause an increase in the respiratory rate? Increased PCO2, decreased arterial pressure, decreased pH, decreased PO2
The approximate partial pressure of oxygen at standard atmospheric pressure is about _____ mm Hg. 160
Which gas law deals with the solubility of gases in solution? Henry
Which of the following would you expect to happen to cellular respiration during exercise? Increased cellular respiration occurs during exercise, causing a rise in plasma PCO2, which is detected by central chemoreceptors in the brain and perhaps peripheral chemoreceptors in the carotid sinus and aorta to cause an increase in respiration rate.
The basic rhythm of the respiratory cycle of inspiration and expiration seems to be generated by the medullary rhythmicity area.
The PCO2 in alveolar air is _____ blood. Less than in the systemic venous and equal to the systemic arterial
The tendency of the thorax and lungs to return to the preinspiration volume is called elastic recoil
Fluid that is clear, watery and contains protein molecules, salts, and other substances is called intercellular fluid
Created by: Ttiaara
 

 



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