What is the Frank-Starling effect, and why is it important during periods of increased end-diastolic volume? What would happen if the Frank-Starling effect didn't exist?
What will be an ideal response?
Answer: The Frank-Starling effect describes the effect whereby greater filling of the ventricles results in a greater ventricular contraction. It allows the ventricles to effectively "autoregulate" stroke volume, so that it can pump effectively. It allows the heart to automatically compensate for increases in the amount of blood returning to the heart. If the Frank-Starling effect didn't exist, and the stroke volume of the heart was always constant, then in a situation in which venous return is increased, there would be "leftover" blood in the heart after each contraction. This extra blood would build up over time, increasing in volume, until the heart was so distended that contraction would be ineffective.
You might also like to view...
On a coronal sectional image of the elbow joint, the radial fossa is seen medial to the lateral epicondyle of the humerus.
Answer the following statement true (T) or false (F)
Define diabetes
What will be an ideal response?
If a letter in the alphabet is equated to a cell, then which of the following would be most like an organ?
a. two paragraphs b. a paragraph c. a word d. a sentence e. two sentences
________ develop(s) when the immune response mistakenly targets normal body cells and tissues.
A) Autoimmune disorders B) Immediate hypersensitivity C) Anaphylaxis D) Immunodeficiency diseases E) Immune complex disorders