20 Questions
Which type of muscle makes up the bulk of the heart?
Cardiac muscle
What is the function of intercalated discs in cardiac muscle cells?
To allow for electrical synchronization
What is the innermost lining of the muscle wall of the heart called?
Endocardium
What type of tissue makes up the lining of the chambers and vessels of the heart?
Endothelium
What structures project outwards from the endocardium and help add force to the contraction of the heart wall?
Trabeculae carneae
Which type of vessel carries blood away from the heart?
Artery
Which type of vessel carries blood towards the heart?
Vein
What are the microscopic vessels that carry blood between arteries and veins called?
Capillaries
What are the large vessels that connect the heart to the rest of the cardiovascular system called?
Great vessels
Which arteries serve the cardiac muscle tissue?
Coronary arteries
Which chamber of the heart is located at the apex?
Left ventricle
What is the purpose of the pericardial fluid?
To prevent friction between the heart and outer covering
Where is the heart located within the thorax?
Behind the sternum
What is the size of the average adult heart?
12cm long, 9cm wide and 6cm deep
What is the outermost layer of the heart wall called?
Epicardium
Which layer of the pericardium covers the exterior of the heart?
Fibrous pericardium
Where is the upper border of the heart located?
Above the 2nd rib
Where can the heart be listened to the loudest with a stethoscope?
At the apex
What is the purpose of the pericardium?
To help support the heart in its position within the thorax
How many layers make up the heart wall within all four chambers?
Three
Test your knowledge about the human heart's anatomy with this quiz. Discover the name of the lower border of the heart and learn more about its location within the body.
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