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Questions and Answers
What is the primary job of the heart?
What is the primary job of the heart?
- Supplying the heart muscle with oxygen and nutrients
- Maintaining systemic flow throughout the body (correct)
- Contracting and relaxing to regulate blood pressure
- Sending blood to the lungs for gas exchange
Where are the coronary blood vessels responsible for supplying oxygen and nutrients located?
Where are the coronary blood vessels responsible for supplying oxygen and nutrients located?
- Heart (correct)
- Lungs
- Liver
- Brain
What encloses the space in which the heart and lungs are situated?
What encloses the space in which the heart and lungs are situated?
- Diaphragm muscle and ribs (correct)
- Stomach
- Liver
- Kidneys
Which vessels does the heart use to pull in blood from the body?
Which vessels does the heart use to pull in blood from the body?
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What is essential for cells to receive oxygen, nutrients, and eliminate waste?
What is essential for cells to receive oxygen, nutrients, and eliminate waste?
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Study Notes
- The heart is located between the two lungs, within the protective casing of the ribs.
- The diaphragm muscle and ribs enclose a space called the thorax, where the heart and lungs are situated.
- Blood flow is crucial for cells to receive oxygen and nutrients and eliminate waste like carbon dioxide.
- The heart's primary job is to maintain systemic flow, pushing blood throughout the entire body to ensure proper cell function.
- The heart also has a secondary job called pulmonary flow, where it sends blood to the lungs to exchange oxygen and carbon dioxide.
- Coronary blood vessels supply the heart muscle with oxygen and nutrients, falling under the systemic flow category.
- The heart acts as a powerful pump, pulling in blood from the body through veins like the superior and inferior vena cava, and pumping it out through the aorta.
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