Answer:
As a result of skeletal muscle contraction in physical exercise, the venous return - amount of blood that goes to the heart - is greater, so preload would be increased, which would result in a larger cardiac output.
Explanation:
Preload is a term associated with heart function, which consists of the amount of blood that reaches the ventricles from venous circulation.
This preload is able to occupy a space and stretch the walls of the ventricle and determine the amount of blood that will be pumped during ventricular contraction (systole).
In terms of cardiovascular function, preload depends on:
- <em>Final Diastolic Pressure of the Left Ventricle.
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- <em>Final Diastolic Radius of the Left Ventricle.
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- <em>Thickness of the ventricle.
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- <em>Central venous pressure
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- <em>The speed of venous return.
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A consequence of the increased volume of blood in the ventricle -due to a higher preload- is the increase in cardiac output.
Learn more:
Decreased cardiac ouput brainly.com/question/8677396
Answer:
industrial pollution is density-independent
habitat is density-dependent food is also density-dependent because its availability varies depending on this factor a hurricane is abiotic and density-independent number of mates is density-dependent and hunting by humans is density-independent
Answer:
The impact of so many humans on the environment takes two major forms: consumption of resources such as land, food, water, air, fossil fuels and minerals. waste products as a result of consumption such as air and water pollutants, toxic materials and greenhouse gases.
Explanation: