Asked by mummy and me on Jun 09, 2024
Verified
Starling's law of the heart states that the heart pumps:
A) more forcefully when more blood is delivered to it.
B) more rapidly when less blood is delivered to it.
C) less forcefully when oxygen-rich blood is delivered to it.
D) slower when more blood is delivered to it.
E) slower when norepinephrine is secreted.
Starling's Law
A principle in physiology stating that the more the heart is filled with blood during diastole, the greater the force of contraction during systole.
Heart Pumps
The mechanical action of the heart, which contracts to circulate blood throughout the body by pumping it through the cardiovascular system.
More Forcefully
With greater intensity or strength; often referring to actions or performances executed with high energy or power.
- Acquire knowledge about the architecture and roles of the heart and its elements.
Verified Answer
MK
muhammed kadicJun 14, 2024
Final Answer :
A
Explanation :
Starling's law of the heart, also known as the Frank-Starling mechanism, states that the stroke volume of the heart increases in response to an increase in the volume of blood filling the heart (the end diastolic volume) when all other factors remain constant. This means the heart will pump more forcefully when more blood is delivered to it, allowing for greater cardiac output to match the body's needs.
Learning Objectives
- Acquire knowledge about the architecture and roles of the heart and its elements.