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Questions and Answers
Which layer of a blood vessel contains muscles responsible for vasoconstriction and vasodilation?
Which layer of a blood vessel contains muscles responsible for vasoconstriction and vasodilation?
- Tunica intima
- Basal lamina
- Tunica media (correct)
- Tunica externa
What is the primary function of the vasa vasorum in blood vessels?
What is the primary function of the vasa vasorum in blood vessels?
- To regulate blood flow within capillaries
- To prevent backflow in veins
- To supply nutrients to the large blood vessels (correct)
- To control contraction and dilation
What is the role of the external elastic membrane in blood vessels?
What is the role of the external elastic membrane in blood vessels?
- Prevents backflow in veins
- Separates tunica externa from tunica media (correct)
- Controls vasoconstriction and vasodilation
- Provides nutrients to the vessel walls
Which type of blood vessels have thicker walls due to higher pressure from pumped blood?
Which type of blood vessels have thicker walls due to higher pressure from pumped blood?
Where are the nervi vasorum located in blood vessels?
Where are the nervi vasorum located in blood vessels?
Which blood vessels have valves to prevent backflow due to low pressure?
Which blood vessels have valves to prevent backflow due to low pressure?
What factor is the greatest and quickest variable to change blood pressure?
What factor is the greatest and quickest variable to change blood pressure?
Where does most noticeable slowdown of blood flow occur?
Where does most noticeable slowdown of blood flow occur?
Which system must have greater pressure than the atria during diastole?
Which system must have greater pressure than the atria during diastole?
What is the function of Antidiuretic Hormone (ADH) in response to blood volume drops?
What is the function of Antidiuretic Hormone (ADH) in response to blood volume drops?
What hormone, when released by the kidneys, stimulates hematopoiesis?
What hormone, when released by the kidneys, stimulates hematopoiesis?
What is the role of hydrostatic pressure in the blood vessels?
What is the role of hydrostatic pressure in the blood vessels?
What is the function of tunica externa in the circulatory system?
What is the function of tunica externa in the circulatory system?
Which type of capillary is the most common in the human body?
Which type of capillary is the most common in the human body?
What is the primary function of venules in the circulatory system?
What is the primary function of venules in the circulatory system?
What is the relationship between mean arterial pressure and ischemia?
What is the relationship between mean arterial pressure and ischemia?
Which component of blood pressure represents ventricular contraction?
Which component of blood pressure represents ventricular contraction?
Why do veins have valves or shunts in their structure?
Why do veins have valves or shunts in their structure?
What is the function of precapillary sphincters in the circulatory system?
What is the function of precapillary sphincters in the circulatory system?
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