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Human Body Systems and Functions

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Which system is primarily responsible for transporting blood, oxygen, and nutrients throughout the body?

a)

Digestive System

b)

Circulatory System

c)

Respiratory System

d)

Muscular System

2.

Which system breaks down food into nutrients the body can use and eliminates waste?

a)

Nervous System

b)

Immune System

c)

Digestive System

d)

Integumentary System

3.

Which system brings oxygen into the body and removes carbon dioxide?

a)

Respiratory System

b)

Muscular System

c)

Skeletal System

d)

Endocrine System

4.

Which system sends messages throughout the body to coordinate actions and responses?

a)

Circulatory System

b)

Endocrine System

c)

Nervous System

d)

Immune System

5.

Which system covers and protects the body from external harm while also helping regulate body temperature?

a)
Integumentary system
b)
Skeletal system
c)
Circulatory system
d)
Nervous system
6.

Which type of feedback loop reduces or reverses a change in the body to normal (for example, regulating body temperature)?

a)
Static feedback loop
b)
Negative feedback loop
c)
Positive feedback loop
d)
Dynamic feedback loop
7.

Insulin is a hormone that primarily helps regulate which of the following?

a)
Blood pressure levels
b)
Cholesterol levels
c)
Heart rate
d)
Blood glucose levels
8.

What term describes the body’s ability to maintain a stable internal environment?

a)
Equilibrium
b)
Homeostasis
c)
Stability
d)
Adaptation
9.

Which statement is true about viruses (compared to bacteria)?

a)
Viruses cannot reproduce on their own and require a host cell.
b)
Bacteria are always harmful to humans.
c)
Viruses can reproduce independently without a host.
d)
Viruses are larger than bacteria and can be seen with a light microscope.
10.

Which biomolecule primarily provides the body with a quick source of energy?

a)
Fats
b)
Carbohydrates
c)
Nucleic acids
d)
Proteins