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1. What makes life possible in the human body?
A
Cells, tissues, and organs
B
Water and food
C
Bones and muscles
2. How many major systems are responsible for the body's functions?
A
Ten
B
Five
C
Twelve
3. Which system includes the heart and blood vessels?
A
Respiratory system
B
Cardiovascular system
C
Nervous system
4. What does the skeletal system provide for the muscular system?
A
Blood
B
Oxygen
C
Anchor points
5. What is the main function of the respiratory system?
A
To extract oxygen from the air
B
To digest food
C
To produce hormones
6. How many bones are in the adult skeletal system?
A
Over 100
B
Over 200
C
Over 300
7. Which system regulates the body's environment with glands?
A
Urinary system
B
Digestive system
C
Endocrine system
8. What is the main organ of the nervous system?
A
Brain
B
Spine
C
Heart
9. What does the lymphatic system help regulate?
A
Blood sugar levels
B
The body's defenses
C
Digestive enzymes
10. Where are nutrients absorbed in the digestive system?
A
Stomach
B
Mouth
C
Intestines
11. What does the urinary system filter from the blood?
A
Wastes
B
Oxygen
C
Hormones
12. What type of muscles are found in the muscular system?
A
Circular, linear, and square
B
Cardiac, smooth, and skeletal
C
Hard, soft, and flexible
13. How does the nervous system transmit information?
A
Through nerve cells
B
Through the heart
C
Through bones
14. What is the role of the reproductive system?
A
To digest food
B
To create life
C
To eliminate waste
15. Which systems provide energy for the body to function?
A
Respiratory and digestive systems
B
Skeletal and muscular systems
C
Nervous and cardiovascular systems