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Andrew ortiz
week 14 physiology
| Question | Answer |
|---|---|
| Bicarbonates are useful in the GI tract to | neutralize hydrochloric acid |
| The hormone that inhibits gastric muscle, slowing passage of food into the duodenum, is called | gastric inhibitory peptide |
| When the pressure in the lung is greater than atmospheric pressure | expiration occurs |
| During inspiration, the expansion of the lungs causes | a decrease in alveolar pressure |
| Which organ has several functions, including defense, hematopoiesis, red blood cell and platelet destruction, and blood reservoir? | spleen |
| Which antibody is synthesized by immature B cells and then inserted into their plasma membranes? | immunoglobulin M |
| In the extrinsic pathway of stage 1 of the clotting mechanism, chemicals released from damaged tissues trigger the cascade of events that ultimately result in the formation of | prothrombin activator |
| The heart begins beating in the fetus at about what stage of development? | After about 4 weeks |
| What is the functional significance of large areas of cardiac muscle being electrically coupled to form a single functional syncytium? | Because they form a syncytium, muscle cells can pass an action potential along a large area of the heart wall, stimulating contraction in each muscle fiber of the syncytium. |
| Which of the following is not one of the openings that must be blocked when food moves from the pharynx into the esophagus? | Oropharynx |
Created by:
andrewo23
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