Coronary Arteries

The coronary arteries are blood vessels that supply oxygen-rich blood to the heart muscle. They play a crucial role in the functioning of the heart by providing the necessary nutrients and oxygen for its proper functioning.

Structure of Coronary Arteries

The coronary arteries are comprised of two main arteries: the left coronary artery and the right coronary artery. The left coronary artery further branches into the left anterior descending artery and the circumflex artery. These arteries are responsible for supplying blood to different regions of the heart muscle.

Function

The primary function of the coronary arteries is to ensure that the heart muscle receives a constant supply of oxygen and nutrients. During periods of increased activity or stress, the coronary arteries dilate to allow for more blood flow to the heart, ensuring that it can meet the increased demand for oxygen.

Coronary Artery Disease

Coronary artery disease occurs when the coronary arteries become narrowed or blocked due to the buildup of plaque, which is primarily composed of cholesterol and other substances. This can restrict blood flow to the heart muscle, leading to chest pain (angina), heart attacks, and other serious complications.

Study Guide

What is the function of the coronary arteries?
Describe the structure of the coronary arteries.
What is the role of the left anterior descending artery?
How does coronary artery disease affect the heart?
Explain the importance of maintaining healthy coronary arteries.

◂Science Worksheets and Study Guides Eighth Grade. Chemical reactions

Vocabulary/Answer key

Chemical reactions

Vocabulary/Answer key

Chemical reactions

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.

Conservation of Matter: Provide evidence to support the fact that the idea of atoms explains conservation of matter.

Cite evidence from investigations that the total mass of a system remains the same throughout a chemical reaction because the number of atoms of each element remains the same.

Give reasons to justify the statement, 'If the number of atoms stays the same no matter how the same atoms are rearranged, then their total mass stays the same.'

Physical and Chemical Changes: Provide evidence to support the fact that common substances have the ability to change into new substances.

Investigate and describe the occurrence of chemical reactions using the following evidence: Color change; Formation of a precipitate or gas; Release of heat or light.

Use evidence from observations to identify and describe factors that influence reaction rates: Change in temperature; Acidity.

Identify the reactants and products involved in a chemical reaction given a symbolic equation, a word equation, or a description of the reaction.

Provide data from investigations to support the fact that energy is transformed during chemical reactions.

Coronary Arteries

Structure of Coronary Arteries

Function

Coronary Artery Disease

Study Guide

[Coronary Arteries] Related Worksheets and Study Guides:

◂Science Worksheets and Study Guides Eighth Grade. Chemical reactions

The resources above cover the following skills: