7th grade Semester 1 Exam

Front

What is the cardiovascular system?

Back

The cardiovascular system is the system in the body that circulates blood, consisting of the heart, blood vessels (arteries, veins, and capillaries), and blood.

Front

What are arteries?

Back

Arteries are blood vessels that carry oxygen-rich blood away from the heart to the body's tissues.

Front

What are veins?

Back

Veins are blood vessels that carry oxygen-poor blood back to the heart.

Front

What is the basic unit of life?

Back

The basic unit of life in all living organisms is the cell.

Front

What is the function of the nucleus in a cell?

Back

The nucleus is the control center of the cell, containing DNA (genetic material) and regulating cell activities.

Front

What is the primary function of the large intestine?

Back

The primary function of the large intestine is to absorb water and form feces.

Front

What is the role of the heart in the cardiovascular system?

Back

The heart pumps blood throughout the body, supplying oxygen and nutrients to tissues and removing waste products.

Front

What is the difference between arteries and veins?

Back

Arteries carry oxygen-rich blood away from the heart, while veins carry oxygen-poor blood back to the heart.

Front

What is tissue?

Back

Tissue is a group of cells that work together to perform a specific function in the body.

Front

What is an organ?

Back

An organ is a structure made up of different types of tissues that work together to perform a specific function.