The process of heart contraction stimulates by the initiation of an electrical impulse. This electrical impulse starts in the SA node.
<h3>What is the Heart contraction?</h3>
Heart contraction may be defined as a type of physiological activity that stimulates electrical impulses which are initiated by the sinoatrial node. Systole is significantly the contraction phase of the cardiac cycle.
The SA node is a small bundle of specialized cells that is remarkably located in the right atrium. The electrical activity escalates through the walls of the atria and induces them to contract. This action finally forces blood into the ventricles.
Therefore, the SA node is responsible for the initiation of impulses that stimulates heart contraction.
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During pregnancy, it is important to have a good nutrition. Good nutrition allows you and your baby to be healthy. This is because the baby’s health depends on you eating nutritional foods. With a healthy and nutritional diet, a woman will have a successful pregnancy.On the website, it has a list of nutritional needs during pregnancy. Calcium, folic acid, protein, Iron and Vitamin A are the most important to consume during pregnancy. Calcium is needed for the body to make strong bones and teeth. Folic acid is used to make the extra blood you’re your body needs during pregnancy. The protein is important for growth and development. Alcohol should be avoided and caffeine should be limited. During pregnancy, you should never diet. Dieting during pregnancy may not allow you or your baby to get the essential nutrients for growth.From this course, it is said to increase your calorie intake. An additional 300 calories a day
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Answer:
The plaque is <u>so sticky</u> that it <u>keeps</u> the acids <u>in contact</u> with your teeth, <u>in time breaking down the enamel and leading to tooth decay</u>.
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