The Heart

The heart is a muscular organ located in the chest, slightly to the left of the midline. It is responsible for pumping blood throughout the body, delivering oxygen and nutrients to the cells and removing waste products.

Anatomy of the Heart

The heart is divided into four chambers: the left and right atria, and the left and right ventricles. The atria receive blood from the body and the lungs, while the ventricles pump blood out to the body and the lungs.

The heart is also equipped with four valves - the tricuspid valve, the pulmonary valve, the mitral valve, and the aortic valve - which ensure that blood flows in the correct direction through the heart.

Function of the Heart

The heart functions as a double pump, with the right side pumping blood to the lungs for oxygenation, and the left side pumping oxygenated blood to the rest of the body. This process is known as the cardiac cycle.

Additionally, the heart's rhythmic contractions are controlled by electrical signals from the sinoatrial node (SA node), which acts as the heart's natural pacemaker.

Study Guide

Describe the anatomy of the heart, including the chambers and valves.
Explain the function of the heart as a double pump.
Discuss the cardiac cycle and the role of the SA node in controlling the heart's contractions.
Compare and contrast the structure and function of the left and right sides of the heart.

◂Chemistry Worksheets and Study Guides High School. Chemical Reactions

Vocabulary/Answer key

Chemical Reactions

Vocabulary/Answer key

Chemical Reactions

Vocabulary/Answer key

Chemical Reactions

The resources above cover the following skills:

Skills And Processes: The student will demonstrate ways of thinking and acting inherent in the practice of science. The student will use the language and instruments of science to collect, organize, interpret, calculate, and communicate information.

The student will pose scientific questions and suggest investigative approaches to provide answers to questions.

The student will test a working hypothesis. (NTB)

The student will demonstrate that data analysis is a vital aspect of the process of scientific inquiry and communication.

The student will organize data appropriately using techniques such as tables, graphs, and webs (for graphs: axes labeled with appropriate quantities, appropriate units on axes, axes labeled with appropriate intervals, independent and dependent variables on correct axes, appropriate title).

Concepts Of Chemistry: The student will demonstrate the ability to use scientific skills and processes (Core Learning Goal 1) to explain composition and interactions of matter in the world in which we live.

The student will explain that atoms have structure and this structure serves as the basis for the properties of elements and the bonds that they form.

The student will explain how atoms interact with other atoms through the transfer and sharing of electrons in the formation of chemical bonds.

The student will explain how and why substances are represented by formulas.

The student will show that chemical reactions can be represented by symbolic or word equations that specify all reactants and products involved.

The student will explain that matter undergoes transformations, resulting in products that are different from the reactants.

The student will describe the general types of chemical reactions.

The student will balance simple equations (not to include redox reactions).

The student will demonstrate that adjusting quantities of reactants may affect the amounts of products formed.

The student will recognize that chemical reactions occur at different speeds.