Circulatory System Study Guide

The circulatory system, also known as the cardiovascular system, is responsible for the circulation of blood throughout the body. It consists of the heart, blood vessels, and blood.

Components of the Circulatory System

The circulatory system is made up of the following components:

Heart: The muscular organ that pumps blood throughout the body.
Blood vessels: The network of tubes that carry blood to and from the heart, including arteries, veins, and capillaries.
Blood: The fluid that carries nutrients, oxygen, and waste products throughout the body.

Functions of the Circulatory System

The circulatory system has several important functions, including:

Transporting oxygen and nutrients to the body's cells
Removing waste products from the body's cells
Regulating body temperature
Protecting the body from infection and blood loss

Circulation of Blood

The circulation of blood through the body involves the following steps:

Oxygen-poor blood is pumped from the body to the heart's right atrium
The heart pumps the oxygen-poor blood to the lungs, where it picks up oxygen and releases carbon dioxide
Oxygen-rich blood returns to the heart's left atrium and is pumped out to the body's tissues and organs
The oxygen-depleted blood then returns to the heart to begin the cycle again

Study Tips

Here are some tips for studying the circulatory system:

Create diagrams or charts to illustrate the components and functions of the circulatory system
Use flashcards to memorize the different parts of the circulatory system and their functions
Review the circulation of blood through the body by drawing or describing the pathway
Take practice quizzes to test your knowledge of the circulatory system

◂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).