30 Questions
Which layer of the heart is responsible for the rhythmic contraction for pumping?
Myocardium
What are the components of the circulatory system?
Heart, arteries, veins, capillaries, lymphatics
Which layer of the heart is the thickest?
Myocardium
What is the function of the epicardium?
Prevention of friction as the heart beats
Where are the Purkinje fibers located?
Endocardium
Which layer of the heart is the innermost layer?
Endocardium
Which layer of the heart is fibroelastic connective tissue with scattered smooth muscle?
Endocardium
Which layer of the heart is continuous with tissue of the myocardium?
Endocardium
Which layer of the heart is responsible for producing serous fluid?
Epicardium
Which layer of the heart is the outermost layer?
Epicardium
Which type of vessel carries blood back to the heart?
Veins
Which layer of a large vein tends to be thicker than the tunica media?
Tunica adventitia
What is the role of valves in large veins?
To prevent backflow of blood
Which type of vessel collects interstitial fluid and returns it to the blood?
Lymphatic vessels
What is the main function of elastic arteries?
To conduct blood from the heart and help move blood forward under steady pressure
Which type of vessel has the thickest tunica adventitia?
Veins
What is the major determinant of systemic blood pressure in capillaries?
Elastic recoil
Which type of vessel has the thinnest walls?
Capillaries
What is the main function of muscular arteries?
To resist and control blood flow to capillaries
Which type of vessel has the most distinct layers of smooth muscle?
Arteries
Which layer of the pericardium is the outer layer, fibrous sac with serous lining?
Parietal layer
What is the function of the cardiac skeleton?
All of the above
What is the function of the heart valves?
Prevent backflow of blood
What is the function of the endothelium in blood vessels?
Monitors molecule exchange
What is the function of the vaso vasorum in blood vessels?
Brings oxygen and nutrients to cells too far from the lumen
What is the main function of large/elastic arteries?
Regulate blood pressure
What is the main function of medium/muscular arteries?
Distribute blood to organs
What is the main function of small arteries/arterioles?
Regulate blood pressure
What is the main function of capillaries?
Exchange between blood and interstitial fluid
What is the function of venules?
Carry deoxygenated blood
Test your knowledge of the circulatory system in this quiz! Identify key components, histological features of the heart, and structures of blood vessels. Understand the correlation between histological components and their functions. Differentiate between different types of blood vessels.
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