Esophagus

The esophagus is a muscular tube that connects the throat to the stomach. It plays a vital role in the digestive system by transporting food from the mouth to the stomach through a series of coordinated muscle contractions called peristalsis.

The esophagus is approximately 25 centimeters long and is located behind the trachea. Its smooth muscle layers propel food downward to the stomach, where the process of digestion continues.

Functions of the Esophagus:

Transportation of food: The esophagus carries food from the mouth to the stomach.
Peristalsis: Smooth muscle contractions help push food downward through the esophagus.

Study Guide

Here are some key points to remember about the esophagus:

The esophagus is a muscular tube that connects the throat to the stomach.
Peristalsis is the coordinated muscle contractions that propel food through the esophagus.
The esophagus is approximately 25 centimeters long and is located behind the trachea.
Its main function is to transport food from the mouth to the stomach.
Smooth muscle layers in the esophagus help push food downward through peristalsis.

Understanding the structure and function of the esophagus is essential for comprehending the digestive system and the process of food digestion.

◂Science Worksheets and Study Guides Eighth Grade. Chemical bonding

Vocabulary/Answer key

Chemical bonding

The resources above cover the following skills:

Chemistry: Students will use scientific skills and processes to explain the composition, structure, and interactions of matter in order to support the predictability of structure and energy transformations.

Structure of Matter: Provide evidence to explain how compounds are produced. (No electron transfer)

Describe how elements form compounds and molecules.

Physical and Chemical Changes: Compare compounds and mixtures based on data from investigations and research.

Use evidence from data gathered to explain why the components of compounds cannot be separated using physical properties.

Analyze the results of research completed to develop a comparison of compounds and mixtures.