Physiology · Cardiovascular System · Medium
Preload
Meaning: The degree of stretch of the ventricular muscle at the end of filling, before contraction.
In practice: A fluid bolus increases preload and, up to a point, stroke volume.
Quick check
Two questions on related physiology words.
Which word means: The production and release of spit by glands around the mouth, which moistens food and begins starch digestion.
Answer: Salivation
Which word means: A potent peptide released by blood vessel linings that causes strong vasoconstriction.
Answer: Endothelin
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