| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.78 |
| Score | 0% | 56% |
Which of these represents the path of blood flow through the heart?
right atrium → left ventricle → lungs → left atrium → right ventricle |
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right atrium → right ventricle → lungs → left atrium → left ventricle |
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left atrium → right ventricle → lungs → left atrium → right ventricle |
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left atrium → left ventricle → lungs → right atrium → right ventricle |
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.
Blood is circulated throughout the body via:
aorta |
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veins |
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capillaries |
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arterioles |
The aorta is the body's largest artery and receives blood from the pulmonary vein via the left ventricle. From there, blood is circulated through the rest of the body through smaller arteries called arterioles that branch out from the heart. Finally, blood is delivered to bodily tissues through capillaries.
Which of the following is the formula for work?
\(W = {{F}\over{d}}\) |
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\(W = {\vec{F} \over \vec{d} }\) |
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\(W = {F}{d}\) |
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\(W = \vec{F}\vec{d}\) |
Work is performed on an object when an applied force causes displacement along the same vector. Measured in joules (J) or newton-meter (Nm), work is calculated by multiplying force times displacement: \(W = \vec{F}\vec{d}\)
Convert 5C° to F°.
37 |
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-23 |
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27 |
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41 |
To convert from C° to F° use:
\(F° = {9 \over 5}C° + 32\)
\(F° = {9 \over 5}(5) + 32\)
\(F° = {45 \over 5} + 32\)
\(F° = 9 + 32 = 41\)
The __________ is a system of muscles that allows breathing.
trachea |
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diaphragm |
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pulmonary |
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bronchioles |
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.