The blank spaces in the statement, “An increase in preload causes a/an _in stroke volume in accordance with the law. An increase in afterload causes a/an in stroke volume. An increase in contractility causes a/an in stroke.” Introduction: The stroke volume is the amount of blood pumped to the body parts during one heart beat. Contractility, preload, and afterload are the factors that describe the stroke volume. The extent to which the sarcomeres of the heart’s ventricular cells are stretched is called the preload. The intrinsic ability to pump the blood is determined by the contractility of the heart. The force that must be overcome by the right atrium and ventricles, in order to pump blood in their individual arteries is known as the afterload.

Question

Want to see the full answer?

Answer 1

Question

Chapter 17, Problem 17CYR

Summary Introduction

To review:

The blank spaces in the statement, “An increase in preload causes a/an _in stroke volume in accordance with the law. An increase in afterload causes a/an in stroke volume. An increase in contractility causes a/an in stroke.”

Introduction:

The stroke volume is the amount of blood pumped to the body parts during one heart beat. Contractility, preload, and afterload are the factors that describe the stroke volume. The extent to which the sarcomeres of the heart’s ventricular cells are stretched is called the preload. The intrinsic ability to pump the blood is determined by the contractility of the heart. The force that must be overcome by the right atrium and ventricles, in order to pump blood in their individual arteries is known as the afterload.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

There are three major factors that affect stroke volume and therefore affect cardiac output: afterload, preload, and contractility. Explain how and why each of these factors affects cardiac output. Each answer must explain what the factor is as well as how it affects cardiac output.

The end systolic volume from an individual’s heart was found to be 50 ml, the end diastolic volume was found to be 110 ml and the heart rate was 90 bpm. What is this individual’s stroke volume, ejection fraction and cardiac output (C.O)? Group of answer choices SV = 60 ml Ejection Fraction = 50% C.O = 3.4 l/min SV = 110 ml Ejection Fraction = 52% C.O = 4.4 l/min SV = 60 ml Ejection Fraction = 55% C.O = 5.4 l/min SV = 160 ml Ejection Fraction = 70 % C.O = 6.4 l/min

What is the function of the pulmonary circulation In a resting state, explain what happened to the heart rate when the stroke volume decreased. Why does this occur? DescribetheFlank-Starlinglawintheheart. Compare the structural features of the different chambers and valves of the heart and how this relates to their function. Explain the flow of the blood as it passes through the heart. Describe how the heart alters stroke volume under sympathetic stimulation. please answer the queations into 2 paragraphs. thanks.