| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.19 |
| Score | 0% | 64% |
The two heart chambers that pump blood called:
aorta |
|
valves |
|
ventricles |
|
atria |
The heart is the organ that drives the circulatory system. In humans, it consists of four chambers with two that collect blood called atria and two that pump blood called ventricles. The heart's valves prevent blood pumped out of the ventricles from flowing back into the heart.
Minerals, vitamins, and fiber are:
proteins |
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macronutrients |
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carbohydrates |
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micronutrients |
Minterals, vitamins, and fiber are micronutrients while proteins, carbohydrates, and fats are macronutrients.
Which of these does not contain oxygenated blood?
right atrium |
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left ventricle |
|
aorta |
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pulmonary vein |
To provide oxygen to the body, blood flows through the heart in a path formed by the right atrium → right ventricle → lungs → left atrium → left ventricle → body. When blood enters the right side of the heart it is deoxygenated. It enters the left side of the heart oxygenated after traveling to the lungs.
As part of digestion, the liver produces bile which breaks down:
starches |
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fat |
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protein |
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sugars |
The liver produces bile which emulsifies (separates) fat.
The __________ is a system of muscles that allows breathing.
trachea |
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pulmonary |
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bronchioles |
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diaphragm |
The diaphragm is a system of muscles that allows breathing. During inhalation, the diaphragm expands and air rushes in to fill the space created. Then, during exhalation, the diaphragm contracts and forces the air back out.