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Questions and Answers
What is the function of vasa vasorum?
What is the function of vasa vasorum?
- Constrict smooth muscle in the tunica intima
- Deliver nutrients and remove waste from the cells of large vessels (correct)
- Separate the media from the outer tunic in large arteries
- Allow blood into a capillary bed or not
Which blood vessels have valves to ensure blood does not flow backward?
Which blood vessels have valves to ensure blood does not flow backward?
- Venules
- Arterioles
- Arteries
- Veins (correct)
What causes vasoconstriction?
What causes vasoconstriction?
- Is a result of the expansion of the artery due to the ejection of blood
- Increases blood flow and decreases blood pressure
- Allows blood into a capillary bed or not
- Decreases blood flow and increases blood pressure (correct)
What is the main function of arterioles?
What is the main function of arterioles?
In which type of capillary is the vessel wall only one cell thick?
In which type of capillary is the vessel wall only one cell thick?
What does a high pulse pressure (100 mm Hg) signify?
What does a high pulse pressure (100 mm Hg) signify?
What happens if mean arterial pressure falls below 60 mm Hg for an extended period?
What happens if mean arterial pressure falls below 60 mm Hg for an extended period?
Which factor directly increases both blood pressure and blood flow?
Which factor directly increases both blood pressure and blood flow?
What effect does a narrowing and lengthening of a vessel have on resistance, flow, and pressure?
What effect does a narrowing and lengthening of a vessel have on resistance, flow, and pressure?
What would be the result of hypovolemia on blood pressure?
What would be the result of hypovolemia on blood pressure?
Which system picks up extra fluid and eventually dumps it into the subclavian vein in the neck?
Which system picks up extra fluid and eventually dumps it into the subclavian vein in the neck?
What is responsible for stimulating cardiac function through sympathetic action?
What is responsible for stimulating cardiac function through sympathetic action?
What is the function of Venoconstriction?
What is the function of Venoconstriction?
Which hormone targets the kidneys to reabsorb water, increasing blood volume and pressure?
Which hormone targets the kidneys to reabsorb water, increasing blood volume and pressure?
What is the main function of the Respiratory pump in the venous system?
What is the main function of the Respiratory pump in the venous system?
What does the Renin-Angiotensin-Aldosterone Mechanism produce that is a powerful vasoconstrictor?
What does the Renin-Angiotensin-Aldosterone Mechanism produce that is a powerful vasoconstrictor?
What happens during filtration in the Capillary Exchange Program?
What happens during filtration in the Capillary Exchange Program?
Which system regulates blood pressure and flow through stretch receptors in vessels and chambers?
Which system regulates blood pressure and flow through stretch receptors in vessels and chambers?
What is the role of Osmotic pressure in the Capillary Exchange Program?
What is the role of Osmotic pressure in the Capillary Exchange Program?
What effect does Vasoconstriction have on arteries?
What effect does Vasoconstriction have on arteries?
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