19 Questions
What is the main function of vasa vasorum in blood vessels?
Deliver nutrients and remove waste from large vessel cells
Which layer of a blood vessel is innervated by nervi vasorum and controlled by hormones and local chemicals?
Tunica media
What is the main function of arterioles in the circulatory system?
Supply blood to tissues by perfusion
Which type of capillary has pores that make it permeable to larger molecules?
Fenestrated capillary
What is the primary function of precapillary sphincters in capillary beds?
Regulate blood flow into capillaries
Why do veins have valves along their length?
To prevent backflow of blood due to low pressure and gravity
What does the term 'pulse pressure' represent in the context of blood pressure?
Difference between systolic and diastolic pressure
What is the concern if mean arterial pressure (MAP) falls below 60 mm Hg for an extended period?
Risk of ischemia and hypoxia
What factor affects blood flow by increasing resistance if arteries are not compliant?
Blood viscosity
What is the function of the skeletal muscle pump in the cardiovascular system?
To contract leg muscles to force blood back toward the heart
Which mechanism decreases resistance in a vein and increases blood flow?
Venoconstriction
How does water move across capillaries according to the text?
By osmosis
Which of the following is responsible for regulating vessel tone or contraction?
Vasomotor centers
What is the main role of Antidiuretic Hormone (ADH) in the cardiovascular system?
Target kidneys to reabsorb water to increase blood volume and pressure
Which factor stimulates erythrocyte production in bone marrow?
Erythropoietin (EPO)
What initiates the Renin-Angiotensin-Aldosterone Mechanism in the cardiovascular system?
Increase in blood flow
What causes fluid reabsorption back into capillaries according to the text?
Osmotic pressure in capillaries
Which receptors monitor oxygen, carbon dioxide, and pH levels in the cardiovascular system?
Chemoreceptors
What is the main function of Vasoconstriction in the cardiovascular system?
Increases pressure and resistance in an artery but decreases flow
Test your knowledge on the structure and function of blood vessels, including arteries and veins. Explore how blood vessels help maintain blood pressure and circulation in the body.
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