Stomach

The stomach is an important organ in the digestive system. It is located in the upper abdomen, just below the diaphragm. The stomach plays a key role in the digestion of food and the absorption of nutrients.

Anatomy of the Stomach

The stomach is a muscular organ that is divided into four main parts: the cardia, fundus, body, and pylorus. It has a highly folded inner lining, which allows it to expand and contract as it processes food.

Function of the Stomach

The primary function of the stomach is to break down food and mix it with digestive juices to form a substance called chyme. The stomach also secretes enzymes and acids that help to further break down food and kill bacteria.

Study Guide

What is the location of the stomach in the body?
Describe the four main parts of the stomach.
What is the primary function of the stomach?
How does the inner lining of the stomach contribute to its function?
Explain the role of digestive juices in the stomach.

◂Science Worksheets and Study Guides Second Grade. What is science?

Vocabulary/Answer key

What is science?

The resources above cover the following skills:

LIFE SCIENCE

Ecosystems: Interactions, Energy, and Dynamics

Obtain information from literature and other media to illustrate that there are many different kinds of living things and that they exist in different places on land and in water (e.g., woodland, tundra, desert, rainforest, ocean, river).

EARTH AND SPACE SCIENCE

Earth’s Systems

Make observations from media to obtain information about Earth’s events that happen over a short period of time (e.g., tornados, volcanic explosions, earthquakes) or over a time period longer than one can observe (e.g., erosion of rocks, melting of glaciers).

Collect and evaluate data to identify water found on Earth and determine whether it is a solid or a liquid (e.g., glaciers as solid forms of water; oceans, lakes, rivers, streams as liquid forms of water).