When a tissue or blood vessel is torn or cut, the cells near the damaged part send out signals to activate platelets. As platelets begin to form a plug, more chemical signals are released to attract more platelets until the bleeding stops. Stimulus: Response: Type of mechanism: When you do physical activities, the amount of energy produced in your cells increase. This in turn causes an increase in the concentration of carbon dioxide in the blood. The continuous increase of carbon dioxide in the blood creates a weak acid that lowers your blood pH. This drop in pH level signals your brain to increase your heart rate and respiration for you to get more oxygen. Stimulus: Response: Type of mechanism: Hydrochloric acid is one of the important substances secreted in your stomach to digest proteins and other minerals in the food you eat. The presence of undigested food in your stomach triggers the secretion of more hydrochloric acid so that digestion will proceed. Stimulus: Response: Type of mechanism:

When a tissue or blood vessel is torn or cut, the cells near the damaged part send out signals to activate platelets. As platelets begin to form a plug, more chemical signals are released to attract more platelets until the bleeding stops. Stimulus: Response: Type of mechanism: When you do physical activities, the amount of energy produced in your cells increase. This in turn causes an increase in the concentration of carbon dioxide in the blood. The continuous increase of carbon dioxide in the blood creates a weak acid that lowers your blood pH. This drop in pH level signals your brain to increase your heart rate and respiration for you to get more oxygen. Stimulus: Response: Type of mechanism: Hydrochloric acid is one of the important substances secreted in your stomach to digest proteins and other minerals in the food you eat. The presence of undigested food in your stomach triggers the secretion of more hydrochloric acid so that digestion will proceed. Stimulus: Response: Type of mechanism:

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter33: The Animal Body: Basic Form And Function

Section: Chapter Questions

Problem 2VCQ: Figure 33.21 State whether each of the following processes are regulated by a positive feedback loop...

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Similar questions

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