CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
10th Edition
ISBN: 9780136538820
Author: Taylor
Publisher: INTER PEAR
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Textbook Question
Chapter 30, Problem 3TYK
Arm muscles and leg muscles are arranged in antagonistic pairs. How does this affect their functioning?
a. It provides a backup if one of the muscles is injured.
b. One muscle of the pair pushes while the other pulls.
c. A single motor neuron can control both of them.
d. It allows the muscles to produce opposing movements.
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How does the nervous system grade the force of muscle contraction?
a. Only by recruiting additional motor units
b. Only by varying the firing rate of the motor neurons
Oc. By varying the firing rate of the motor neurons and by recruiting additional motor units
d. By using more motor neuron pools
Which arrangement best describes a bipennate muscle?a. The muscle fibers feed in on an angle to a long tendon from both sides.b. The muscle fibers feed in on an angle to a long tendon from all directions.c. The muscle fibers feed in on an angle to a long tendon from one side.d. The muscle fibers on one side of a tendon feed into it at a certain angle and muscle fibers on the other side of the tendon feed into it at the opposite angle.
Which statement CORRECTLY describes a motor unit?
O a.
A single muscle fibre plus all the motor neurons that innervate it.
O b. All the motor neurons supplying a single muscle
O c.
A pair of antagonistic muscles
O d. A single motor neuron plus all the muscle fibres it innervates
Chapter 30 Solutions
CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
Ch. 30 - Complete this concept map on animal movement.Ch. 30 - A humans internal organs are protected mainly by...Ch. 30 - Arm muscles and leg muscles are arranged in...Ch. 30 - Gravity would have the least effect on the...Ch. 30 - Prob. 5TYKCh. 30 - Prob. 6TYKCh. 30 - When a dog is running fast, its body position is...Ch. 30 - What is the role of calcium in muscle contraction?...Ch. 30 - Muscle A and muscle B have the same number of...Ch. 30 - Prob. 10TYK
Ch. 30 - Prob. 11TYKCh. 30 - Prob. 12TYKCh. 30 - Prob. 13TYKCh. 30 - Describe how you bend your arm, starting with...Ch. 30 - Prob. 15TYKCh. 30 - Drugs are often used to relax muscles during...Ch. 30 - An earthworms body consists of a number of...Ch. 30 - When a person dies, muscles become rigid and fixed...Ch. 30 - SCIENTIFIC THINKING Imagine you have a friend who...
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