23 Questions
What should a low pulse correspond with?
Low systolic pressure
Which artery is commonly used to measure pulse?
Radial artery
How does compliance of arteries affect blood pressure and flow?
Increases blood pressure and decreases blood flow
What happens to blood flow when vessel length increases?
Flow decreases
How does hypovolemia affect blood pressure?
Decreases blood pressure
What is the function of vasa vasorum in blood vessels?
To deliver nutrients and remove waste from the cells of large vessels
Which blood vessels have valves to prevent backward flow of blood?
Veins
What is the main function of vasoconstriction in blood vessels?
Decreases blood flow and increases blood pressure
Which layer of a blood vessel is primarily composed of collagenous fibers and some smooth muscle?
Tunica externa
Where is the distinct layer of elastic fibers known as the internal elastic membrane located in a blood vessel?
Between the tunica intima and tunica media
Which type of vessel has thicker walls to help maintain blood pressure?
Arteries
What is the purpose of arterioles in the circulatory system?
To slow down blood flow and decrease blood pressure
Which type of capillary has an incomplete basement membrane and allows blood flow at a very slow rate?
Sinusoid capillary
What is the main difference between elastic arteries and muscular arteries?
Presence of muscle fibers
What type of artery is specifically great for vasoconstriction?
Muscular artery
Why do precapillary sphincters remain closed until oxygen is needed or waste needs to be removed?
To prevent blood from flowing into capillary beds unnecessarily
Which structure allows blood flow into a capillary bed from an arteriole?
Metarteriole
What is the primary function of venules in the circulatory system?
Allowing for diapedesis
What is the purpose of valves in veins?
To regulate blood flow direction
Which term refers to the volume of blood per unit of time through a vessel, tissue, or organ?
Blood flow
What does the systolic blood pressure represent?
Pressure during ventricular contraction
If the mean arterial pressure (MAP) falls below 60 mm Hg for an extended period, what is a potential concern?
Ischemia and hypoxia
What is pulse pressure defined as?
Difference between systolic and diastolic pressure
Learn about venules and veins in the venous system, including their functions, structures, and roles in blood circulation. Explore how venules join to form veins, the importance of valves in preventing backflow, and the concept of blood reservoirs in veins.
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