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physio 220-01
wk 7-13
| Question | Answer |
|---|---|
| The chemical process in which a compound unites with water and then splits into simpler compounds is called | hydrolysis |
| Because fats are insoluble in water, they must be | emulsified |
| Chemical digestion requires the secretion of _____ into the lumen of the GI tract. | digestive enzymes and bile |
| Stimulation of gastric juice secretion occurs in all of the following phases except the _____ phase. | digestive |
| The process of deglutition includes all of the following stages | oral,pharyngeal, esophageal |
| The ejection of bile from the gallbladder is controlled by which hormones? | CCK and secretin |
| _____ is the passage of substances through the intestinal mucosa into the blood or lymph | absorption |
| Pepsinogen is converted to pepsin by hydrochloric acid, which is produced by the _____ of the gastric glands | parietal cells |
| Peristalsis is regulated in part by the intrinsic stretch reflexes. It is also thought to be stimulated by the hormone | CCK cholecystokinin |
| Fats and other nutrients in the duodenum stimulate the intestinal mucosa to release a hormone called | gastric inhibitory peptide |
| The act of expelling feces is called | defacation |
| CCK is an intestinal hormone that | causes the pancreas to increase secretion of exocrine high in enzymatic content, opposes the influence of gastrin on gastric parietal cells, stimulates contraction of the gallbladder so that bile can pass into the duodenum. |
| saliva contains the enzyme | amylase |
| the final step in lipid transport by the intestines is the formation of | chylomicrons |
| the wave-like ripple of the muscle layer of the GI tract is called | peristalsis |
| in what form does oxygen travel in the blood | dissolved oxygen in the plasma and associated with hemoglobin |
| ----- law states that the volume of a gas is inversely proportional to its pressure | Boyle's |
| what variations exist in the body to temporarily store or carry oxygen | neuroglobin, myoglobin, fetal hemoglobin |
| which oxygen-binding protein helps move oxygen out of the blood and into muscle cells? | myoglobin |
| which structural feature facilitates oxygen diffusion from the alvolar air into the blood in lung capillaries? | the aveolar and capillary walls are both very thin, the aveolar and capillary surfaces are both extremely large, the lung capillaries accommodate a large amount of blood at one time. |
| the exact amount of oxygen in blood depends mainly on the amount of | hemoglobin |
| the compound formed when carbon dioxide combines with hemoglobin is | carbaminohemoglobin |
| the volume of air exhaled normally after a typical inspiration is called---- volume | tidal |
| during inspiration, as the size of the thorax increases, the | intrapleural and alveolar pressure decrease |
| a right shift of the oxygen-hemoglobin dissociation curve due to increase partial pressure of carbon dioxide is also known as the | Bohr effect |
| the basic rhythm of the respiratory cycle of inspiration and expiration seems to be generated by the | medullary rhythmicity area |
| which term refers to the volume of inspired air that actually reaches, or ventilates, the alveoli? | alveolar ventilation |
| when carbon dioxide dissolves in water, some of the carbon dioxide molecules associate with water to form | carbonic acid |
Created by:
erynnekol
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