Answered: Distinguish between isometric and…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Related questions

Question

Distinguish between isometric and isotonic
contractions.

Expert Solution

Introduction

Muscle contractions can be defined as an increase in the force exerted on an object or bone by the muscle (tension) or a decrease in the muscle's length. In the voluntary skeletal muscles, the sarcomere is defined as the unit of muscle contraction.

Explanation

Isotonic contractions	Isometric contractions
The muscle contractions in which the tension does not change while the length of the muscle changes are known as isotonic contractions.	The muscle contractions in which the muscle's length is constant while the tension is the varying component are known as isometric contractions.
The release of more amount of heat during contraction makes them less energy efficient.	The release of less amount of energy during contraction makes them more energy efficient.
They have a shorter latent and contraction period while a longer relaxation period.	They have a longer latent and contraction period while a shorter relaxation period.
The shortening period in these contractions increases with an increase in temperature.	The isometric tension decreases with an increase in temperature in these.