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Questions and Answers
What is the primary function of the heart and blood vessels?
What is the primary function of the heart and blood vessels?
- To aid in digestion
- To produce hormones
- To regulate body temperature
- To transport oxygen and nutrients (correct)
Where is the heart located in the body?
Where is the heart located in the body?
- In the abdominal cavity
- Near the diaphragm
- In the middle of the mediastinum (correct)
- In the cranial cavity
What structure covers the heart and protects it?
What structure covers the heart and protects it?
- Pericardium (correct)
- Diaphragm
- Endocardium
- Myocardium
Which type of blood vessel carries blood away from the heart?
Which type of blood vessel carries blood away from the heart?
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Which of the following is NOT a component of the circulatory system?
Which of the following is NOT a component of the circulatory system?
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Where is the mediastinum located in the body?
Where is the mediastinum located in the body?
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What is the function of the pericardium in relation to the heart?
What is the function of the pericardium in relation to the heart?
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Which blood vessels carry blood towards the heart?
Which blood vessels carry blood towards the heart?
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Study Notes
The Circulatory System
- The primary function of the heart and blood vessels is to transport oxygen and nutrients to cells and remove waste products.
Heart Location and Protection
- The heart is located in the thoracic cavity, between the lungs, and is protected by the rib cage.
- The pericardium, a double-layered sac, covers the heart and protects it by reducing friction and preventing excessive movement.
Blood Vessels
- Arteries carry blood away from the heart, whereas veins carry blood towards the heart.
- The circulatory system does not include the lymphatic system.
Mediastinum and Pericardium
- The mediastinum is a region in the thoracic cavity that contains the heart, trachea, esophagus, and major blood vessels.
- The pericardium acts as a shock absorber and reduces friction between the heart and surrounding structures, allowing for smooth heart movement.
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