16 Questions
Which blood vessels have thicker walls due to higher pressure from pumped blood?
Arteries and arterioles
What is the function of valves in veins?
To stop backflow due to low pressure
Which layer of blood vessels contains muscles for vasoconstriction and vasodilation?
Tunica media
What is the function of vasa vasorum in blood vessels?
To supply nutrients to large blood vessels
Which blood vessels have larger lumens?
Venules and veins
What is the function of nervi vasorum in blood vessels?
To control contraction and dilation
Which type of capillary is the most common?
Continuous capillary
What is the main function of arterioles in the circulatory system?
To regulate blood flow and blood pressure
What is the primary factor that slows down blood flow through the body?
Resistance
What is Mean Arterial Pressure (MAP) calculated as?
$\text{Diastolic BP} + \text{Pulse Pressure}/3$
Which statement about veins is true?
Veins have valves to prevent backflow
What does Hypovolemia refer to?
Low blood volume
Which component of blood has a gradual impact on increasing blood pressure over time?
Blood viscosity
What is the primary function of precapillary sphincters?
Control blood flow into capillaries
'Ischemia' is a condition primarily caused by:
Hypoxia
'Pulse pressure' is defined as the difference between:
$\text{Systolic BP}$ and $\text{Diastolic BP}$
Test your knowledge about the structure and function of the human circulatory system, including the different types of blood vessels and their characteristics. Understand how blood flows from the heart to the lungs and the rest of the body through arteries, capillaries, and veins.
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