The Law of LaPlace explains which one?
O why stretching of the heart increase the stroke volume
• the different factors that add to resistance of fluid flow
• the difference between resistance and compliance in small arterioles
• why an enlarged section of a blood vessel is more likely to burst than a narrow section of the same vessel
• why stretching of the heart increases heart rate
• why an enlarged section of a blood vessel is more likely to burst than a narrow section of the same vessel
The Law of Laplace explains why an enlarged section of a blood vessel is more likely to burst than a narrow section of the same vessel.
According to the Law of Laplace, the tension or wall stress in a blood vessel is directly proportional to the blood pressure inside the vessel and the radius of the vessel, and inversely proportional to the thickness of the vessel wall. Mathematically, it can be expressed as:
Tension (wall stress) = (blood pressure × radius) / wall thickness
When the radius of a blood vessel increases, the tension or wall stress increases as well. This means that an enlarged section of a blood vessel experiences higher wall stress compared to a narrower section of the same vessel, assuming the blood pressure and wall thickness remain constant.
The increased wall stress in the enlarged section can exceed the capacity of the vessel wall, leading to a higher risk of bursting or rupturing. This is why an enlarged section of a blood vessel is more likely to burst compared to a narrow section of the same vessel.