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Questions and Answers
What is the function of veins in the circulatory system?
What is the function of veins in the circulatory system?
- Pump blood to the lungs
- Supply oxygen to the body tissues
- Allow blood to flow towards the heart (correct)
- Contain blood moving away from the heart
Which vessels have the thickest smooth muscle layer?
Which vessels have the thickest smooth muscle layer?
- Lymphatic vessels
- Capillaries
- Veins
- Arteries (correct)
What initiates the heartbeat in the human body?
What initiates the heartbeat in the human body?
- AV node (atrioventricular node)
- Purkinje fibers
- SA node (sinoatrial node) (correct)
- Bundle of His
In which vessel is blood pressure typically the highest?
In which vessel is blood pressure typically the highest?
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What is the primary function of lymphatic vessels in the body?
What is the primary function of lymphatic vessels in the body?
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What is the main function of the tunica externa in arteries and veins?
What is the main function of the tunica externa in arteries and veins?
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What percentage of a centrifuged blood sample is composed of formed elements?
What percentage of a centrifuged blood sample is composed of formed elements?
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What is the primary function of basophils in the blood?
What is the primary function of basophils in the blood?
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From where do platelets originate?
From where do platelets originate?
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What force is responsible for moving blood out of arterial capillaries?
What force is responsible for moving blood out of arterial capillaries?
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Which hormone stimulates the production of erythrocytes?
Which hormone stimulates the production of erythrocytes?
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What is the composition of hemoglobin and its primary function?
What is the composition of hemoglobin and its primary function?
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