Anatomy & Physiology Study Questions

Last Modified: December, 2004 (J. Crimando).

BIO202 Anatomy & Physiology
Study Questions Set 4:

Cardiovascular System: Cardiac Output and Stroke Volume:

For each of the following conditions or factors in Column A, identify the expected effect on the conditions or factors in Column B: (example: Increase SV with constant HR == (increase) CO

Conditions: [A]	Will Result in ==	Expected Effects: [B]
Increase Sympathetic Cardiac Stimulation	==	( ) HR
Moderate Increase in Preload	==	( ) SV
Increase EDV	==	( ) Preload
Decrease Cardiac Contractility	==	( ) SV and ( ) CO
Decrease SV such as with congestive heart failure (CHF)	==	( ) ESV
Increase ESV	==	( ) EDV and ( ) Preload
Excessively Increased EDV	==	( ) SV ( ) CO
Increased activation of beta₁ receptors on SA node	==	( ) SA node activity
Excessively high (>160beats/min) HR	==	( ) P-R interval ( ) ventricular fill time ( ) EDV ( ) Preload ( ) SV
Moderate to Intense (but not maximal) Exercise	==	( ) HR ( ) SV ( ) CO
Hypertension (Increased BP)	==	( ) Afterload
Increased Afterload	==	( ) ESV ( ) SV

Answers:

Conditions: [A]	Will Result in ==	Expected Effects: [B]
Increase Sympathetic Cardiac Stimulation	==	(*increase*) HR
Moderate Increase in Preload	==	(*increase*) SV
Increase EDV	==	(*increase*) Preload
Decrease Cardiac Contractility	==	(*decrease) SV and (decrease*) CO
Decrease SV such as with congestive heart failure (CHF)	==	(*increase*) ESV
Increase ESV	==	(*increase) EDV and (increase*) Preload
Excessively Increased EDV	==	(*decrease) SV (decrease*) CO
Increased activation of beta₁ receptors on SA node	==	(*increase*) SA node activity
Excessively high (>160beats/min) HR	==	(*decrease) P-R interval (decrease) ventricular fill time (decrease) EDV (decrease) Preload (decrease*) SV
Moderate to Intense (but not maximal) Exercise	==	(*increase) HR (increase) SV (increase*) CO
Hypertension (Increased BP)	==	(*increase*) Afterload
Increased Afterload	==	(*increase) ESV (decrease*) SV