What is the cardiovascular system?
7th grade Semester 1 Exam

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Science
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7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
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.
2.
FLASHCARD QUESTION
Front
What are arteries?
Back
Arteries are blood vessels that carry oxygen-rich blood away from the heart to the body's tissues.
3.
FLASHCARD QUESTION
Front
What are veins?
Back
Veins are blood vessels that carry oxygen-poor blood back to the heart.
4.
FLASHCARD QUESTION
Front
What is the basic unit of life?
Back
The basic unit of life in all living organisms is the cell.
5.
FLASHCARD QUESTION
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.
6.
FLASHCARD QUESTION
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.
7.
FLASHCARD QUESTION
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.
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