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
New England was a neighbor to North Africa 220 millions ago.
As looked down upon by the space, it is found that new England and North Africa are immediate neighbors. It took over millions of years or the continents to move apart. The gap left between them was eventually filled by the Atlantic Ocean.
The statement "When levels of the amino acid are high, it binds to the repressor, allowing synthesis of this amino acid to proceed" (A).
E. coli needs amino acids to survive. It can ingest the amino acid, Tryptophan from the environment. When the levels of Tryptophan are low, it can synthesize Tryptophan by using enzymes that are encoded in five genes. These genes lie next to each other in the tryptophan operon. If tryptophan is available in the environment, E. coli will not synthesize it.
An outline of the new location of the selected range will appear before you release the mouse button. If a person prefer to cut, copy and paste using mouse, then a person can use the drag and drop method. Beginning by selecting a cell or a cell range but not multiple, non-adjacent cell ranges. A person must not use the cut or copy buttons or keyboard shortcuts in order to be done. To cut and paste, the selection using the drag and drop method, click the border that surrounds the cells selected and drag to a new location. An outline of the cell range will follow the mouse pointer as it is being drag showing that where the range will insert itself when the mouse button is being released.
Distribution and abundance of organisms
Speciation of plants
Antarctic convergence