5th Edition

ISBN: 9781260487947

Author: BROOKER

Publisher: MCG

Concept explainers

Corona Radiata is a collection of nerve fibers present in the brain that carries messages between the brain cells of the cerebral cortex and the brain stem. Both brain stem and cerebral cortex play a role in motor function and sensation and it is the cor…

Neuron Structure

A neuron is defined as the functional unit of the body system called the nervous system. It is significant in transmitting signals that include receiving and sending the signals from a portion of the brain. The neurons are considered specialized cells in…

Afferent Neurons

Neurons are electrically excitable cells in the body specialized for receiving and transmitting information. They are referred to as the structural units of the nervous system. The important parts of a neuron include the cell body, dendrites, and axons.

Motor Homunculus

The term homunculus is Latin and is referred to as ‘little man’. In neuroanatomy, the cortical homunculus is either the motor or sensory distribution along the cerebral cortex of the brain. It was discovered by the great scientist ‘Wilder Penfield and Ed…

Nervous System

The nervous system is the portion of an animal's body that controls and transmits signals between various parts of the body. The central nervous system (CNS) and the peripheral nervous system (PNS) are the two primary components of the nervous system in …

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Textbook Question

Chapter 45, Problem 1CQ

Compare the structural and functional features of exoskeletons and endoskeletons and their advantages and disadvantages.

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Chapter 45, Problem 10TY

Chapter 45, Problem 2CQ

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Explain how an endoskeleton differs from an exoskeleton.

Which of the following is not a true statement comparing exoskeletons and endoskeletons? a. Endoskeletons can support larger organisms. b. Only endoskeletons can grow as an organism grows. c. Exoskeletons provide greater protection of the internal organs. d. Exoskeletons provide less mechanical leverage.

What is the major disadvantage of an exoskeleton? A) It does not provide effective support for muscles. B) It does not protect the internal organs. C) It hardens only after an extended exposure to air. D) It must be periodically shed for growth to occur.

Chapter 45 Solutions

Biology

Ch. 45.1 - Prob. 1CC Ch. 45.2 - Prob. 1CC Ch. 45.2 - Prob. 1CS Ch. 45.2 - Prob. 2CS Ch. 45.3 - What is the normal function of the PPAR- protein...Ch. 45.3 - CoreSKILL What was the hypothesis proposed by...Ch. 45.3 - CoreSKILL Assume that the mean weight of both...Ch. 45 - Prob. 1TY Ch. 45 - Prob. 2TY Ch. 45 - Prob. 3TY

Ch. 45 - Prob. 4TY Ch. 45 - The function of ATP during muscle contraction is...Ch. 45 - The function of Ca2+ in skeletal muscle...Ch. 45 - Stimulation of a muscle fiber by a motor neuron...Ch. 45 - Muscle fibers that have a large number of...Ch. 45 - Which of the following statements about movement...Ch. 45 - Prob. 10TY Ch. 45 - Compare the structural and functional features of...Ch. 45 - Describe as many types of animal locomotion as you...Ch. 45 - Prob. 3CQ Ch. 45 - List and briefly describe the steps in the...Ch. 45 - Discuss the three types of muscle tissues found in...

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