The Heart's Ability to Vary Stroke Volume Based Solely on Changes

question 23

Multiple Choice

The heart's ability to vary stroke volume based solely on changes in end-diastolic volume is based on what mechanism?

• A) Automaticity
• B) Autoregulation
• C) Bohr equation
• D) Frank-Starling's law

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Definitions:

Delta

A landform at the mouth of a river where it splits into several streams or channels and deposits sediment, creating a fan-shaped area.

High Tide

The state of the tide when it is at its highest level, typically caused by the gravitational pull of the moon and the sun on the Earth's oceans.

Downcutting

A process by which streams or rivers erode their beds, cutting downwards into the ground and often leading to valley deepening.

Ice Ages

Periods of extensive glacial coverage, where major portions of the Earth's surface are covered by ice sheets.