This textbook is available Logo
Visual Essentials of Anatomy & Physiology 1st Edition

Visual Essentials of Anatomy & Physiology (1st Edition)

Book Edition1st Edition
Author(s)Martini, Ober
PublisherPearson Higher Education
Section 15.1: The digestive tract is a muscular tube lined by a mucous membrane
Section 15.2: Smooth muscle contractions mix and propel materials through the digestive tract
Section EOS1: End of Section 1
Section 15.3: The oral cavity contains the tongue, salivary glands, and teeth, and receives saliva from the salivary glands
Section 15.4: Teeth in different regions of the jaws vary in size, shape, and function
Section 15.5: The muscular walls of the pharynx and esophagus play a key role in swallowing
Section 15.6: The stomach is a muscular, expandable, J-shaped organ with three layers in its muscularis externa
Section 15.7: The stomach breaks down the organic nutrients in food
Section 15.8: The intestinal tract is specialized for absorbing nutrients
Section 15.9: The small intestine is divided into the duodenum, jejunum, and ileum
Section 15.10: Five hormones are involved in regulating digestive activities
Section 15.11: The large intestine stores and concentrates fecal material
Section 15.12: Neural reflexes and hormones work together to control digestive activities
Section EOS2: End of Section 2
Section 15.13: Secretions from three pairs of salivary glands produce saliva
Section 15.14: The liver, the largest visceral organ, is divided into left, right, caudate, and quadrate lopes
Section 15.15: The gallbladder stores and concentrates bile, and the pancreas has vital endocrine and exocrine functions
Section 15.16: Clinical Module: Disorders of the digestive system are diverse and relatively common
Section EOS3: End of Section 3
End of Chapter

Chapter 15, Section 15.1, Module Review, Exercise a

Page 523

Here is a tip:

The innermost layer includes finger-like protrusions called villi.


  • Serosa is a layer of visceral peritoneum that covers the inner layer, muscularis externa.
  • Muscularis externa has two layers of smooth muscles that are responsible for the progression of chyme through the digestive tract.
  • Submucosa surrounds the mucosa and contains lymphatic vessels, blood vessels, and exocrine glands.
  • Mucosa is the deepest layer of the digestive tract that is made up of mucosal epithelium, lamina propria, and two thin layers of smooth muscle called muscularis mucosae.

Verified Answer

Serosa, muscularis externa, submucosa, mucosa

How would you rate this answer and explanation?
Did you like this example?
Subscribe for full access
Page 523