Answer:
Oxygen passes quickly through this air-blood barrier into the blood in the capillaries. Similarly, carbon dioxide passes from the blood into the alveoli and is then exhaled.
Explanation:
Answer: Fibrous pericardium and Serous Pericardium
Explanation:
The pericardium can be defined as the fibroserous sac( double layered) which covers the whole heart. The gap between two layers of serous pericardium is filled with serous fluid. This fluid protects the heart from external shocks.
Fibrous pericardium
This layer is the most superficial layer which consists of dense connective tissue. This layer of the heart protects it from over filling of blood, anchors the heart to the surrounding wall.
Serous pericardium
This layer provides lubrication to the heart by resisting the friction which occurs during the various type of heart function.
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Incorporate more schools that serve breakfast.
The Department of Health and Human Services in the US has proposed a program called Healthy People 2020 to encourage the prevention of acute and chronic illness for all US residents.
One of the more than 1300 specific goals of Healthy People 2020 is to increase the number of schools that serve breakfast. This is a crucial goal because, regrettably, not all parents provide their kids with a healthy breakfast because of financial hardship, carelessness, etc.
Children would benefit from breakfast being served at school either for free or at a reduced cost since they would start the day with nourishment and better health and nutrition from a nutritious breakfast.
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