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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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___ relay messages from the brain and .spinal cord to muscles and glands.

  1. a. Motor neurons
  2. b. Sensory neurons
  3. c. Interneurons
  4. d. Neuroglia

Summary Introduction

Introduction:

Neurons are brain cells that are specialized to transmit nerve impulses. There are three types of neurons: sensory neurons, interneurons, and motor neurons. In vertebrates, these neurons play an important role in flow of information.

Explanation

Reasons for the correct statement:

The flow of information takes place from sensory neuron to interneuron and to motor neurons. So, motor neuron depends on signals from brain and spinal cord to pass it to muscles and glands.

Option a. is given as “Motor neurons”.

Hence, option a. is correct.

Reasons for the incorrect statement:

Option b. is given as “Sensory neurons”. However, sensory neurons do not send signal to the muscle and gland but they send to interneurons...

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