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1.Describe the effects of the sympathetic nerves on cardiac muscle during contraction and relaxation. 2.Define preload, afterload,...

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Medical Sciences

1.Describe the effects of the sympathetic nerves on cardiacmuscle during contraction and relaxation.

2.Define preload, afterload, and contractility.

3.Describe the spread of excitation from the SA node through therest of the heart.

4.Red blood cells have a lifespan of 120 days. What happens tothe blood cell when it dies? Discuss the locations of death,by-products, and formation of RBC.

5.Describe the process of chemotaxis or emigration.

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4.4 Ratings (785 Votes)
1 Cardiac activity is regulated by cardio augmentor nerve called sympathetic nerve These nerves run along with vagus to form cardiac nerves and flexes which pass to the heart along with great veins and arteries The sympathetic    See Answer
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