BuyFindarrow_forward

Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892

Solutions

Chapter
Section
BuyFindarrow_forward

Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892
Textbook Problem

The movement of vertebrate muscles is:

a. controlled primarily by cartilaginous joints with agonistmuscles.

b. antagonistic when it causes movement in the joint.

c. caused by extensor muscles that flex the joint.

d. caused by flexor muscles that extend the joint.

e. exemplified by the biceps and triceps contracting or relaxingsimultaneously.

Summary Introduction

Introduction:

The movement in a joint is caused mainly due to the agonist movement of the muscle. The agonist movement is the major force behind the contraction of the muscles and thus completing the movement.

Explanation

Justification for the correct answer:

Option (b) states that the movement of vertebrate muscles is antagonistic when it causes movement in the joint. This is a true statement as movement in the bones of the vertebrates is caused by the muscles arranged in antagonistic pairs: one pair of muscles is called the extensor muscle, which increases the angle between the two bones, and the other pair is called the flexor muscle, which decreases the angle between the two bones. Hence, option (b) is correct.

Justification for the incorrect answers:

Option (a) states that the movement of vertebrate muscles is controlled primarily by cartilaginous joints with the agonist muscles. This is an incorrect statement as the movement of vertebrate muscles is controlled primarily by the pairing of antagonist muscles with the agonist muscles. So, it is an incorrect option.

Option (c) states that the movement of vertebrate muscles is caused by extensor muscles that flex the joint...

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

What are some functions of skin?

Human Biology (MindTap Course List)

What is population genetics?

Human Heredity: Principles and Issues (MindTap Course List)

Where would you go on Earth to have a celestial pole at your zenith?

Horizons: Exploring the Universe (MindTap Course List)

Today, the keys to solving the worlds poverty, hunger, and environmental problems are within the reach of both ...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

A lightbulb marked 75 W [at] 120 V is screwed into a socket at one end of a long extension cord, in which each ...

Physics for Scientists and Engineers, Technology Update (No access codes included)