Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332



Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem

The pain of heartburn is an example of a ___ .

  1. a. somatic sensation
  2. b. visceral sensation
  3. c. sensory adaptation
  4. d. spinal reflex

Summary Introduction

Introduction: Somatic sensations originate at sensory receptors in skin, joints, and muscle. They travel along sensory neurons to spinal cord and somatosensory cortex. Visceral sensations originate when sensory neurons are stimulated inside the organs, and the signals are relayed to spinal cord and brain.


Reason for the correct statement:

Pain sensation can be somatic or visceral based on its origin. Visceral pain occurs in organs in body cavities as a response to muscle spasm, overstretching of an organ or inadequate blood supply. Heartburn is a burning sensation that causes chest pain. It is caused due to stomach acid reflux that enters the esophagus. It is an example of visceral pain, as it originates in the internal organs.

Hence, option b. is correct.

Reasons for the incorrect statement:

Option a. is given as “somatic sensation”...

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