Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 8: Problem 31

Match each statement to a layer of the wall of the esophagus in the key. Answers may be used more than once. a. mucosa b. submucosa c. muscularis d. serosa Contains a layer of epithelium that lines the lumen

Short Answer

Expert verified
The correct answer is: a. Mucosa.

Step by step solution

01

Understanding the layers of the esophageal wall

The esophagus wall has four main layers: 1. Mucosa: The innermost layer, which is in contact with the food bolus passing through the esophagus. It is composed of an epithelium, a lamina propria, and a muscularis mucosae. 2. Submucosa: The layer just outside the mucosa. It contains blood vessels, nerves, and glands that secrete mucus. 3. Muscularis: The muscular coat responsible for the peristaltic movements of the esophagus. It is composed of an inner circular layer and an outer longitudinal layer of smooth muscle cells. 4. Serosa: The outermost connective tissue layer that covers the esophagus. It helps to keep the esophagus in place and attach it to the surrounding structures.
02

Identifying the layer containing epithelium lining the lumen

Since the statement is about the layer that contains epithelium lining the lumen, we should focus on the layer that is in direct contact with the food bolus passing through the esophagus. The mucosa is the innermost layer, which is in contact with the lumen. It consists of an epithelium that lines the lumen and protects the underlying tissue layers. The correct answer is: a. Mucosa

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Tracing the path of food in the following list (a-f), which step is out of order first? a. mouth b. pharynx c. esophagus d. small intestine e. stomach f. large intestine

Why can a person not swallow food and talk at the same time? a. To swallow, the epiglottis must close off the trachea. b. The brain cannot control two activities at once. c. To speak, air must come through the larynx to form sounds. d. A swallowing reflex is only initiated when the mouth is closed. e. Both a and c are correct.

Match each statement to an answer in the key. Answers may be used more than once. Some may have more than one answer. a. gastrin b. secretin c. \(\mathrm{CCK}\) d. All of these are correct. e. None of these is correct. Stimulates the stomach to digest protein

The amino acids that must be consumed in the diet are called essential. Nonessential amino acids a. can be produced by the body. b. are only needed occasionally. c. are stored in the body until needed. d. can be taken in by supplements.

The appendix connects to the a. cecum. b. small intestine c. esophagus. d. liver e. All of these are correct
See all solutions

Recommended explanations on Biology Textbooks

Substance Exchange

Read Explanation

Biological Processes

Read Explanation

Microbiology

Read Explanation

Chemistry of Life

Read Explanation

Cell Cycle

Read Explanation

Ecology

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free