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Understanding the Respiratory System Quiz

Authored by Emily Hoysted

Science

8th Grade

Used 5+ times

Understanding the Respiratory System Quiz
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20 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which organ is primarily responsible for gas exchange in the human body?

Heart

Lungs

Liver

Kidneys

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main function of the alveoli in the lungs?

Pumping blood

Filtering dust

Exchanging gases

Producing mucus

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which muscle contracts and flattens to help you inhale?

Biceps

Diaphragm

Triceps

Quadriceps

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the diaphragm when you breathe out (exhale)?

It contracts and moves down

It relaxes and moves up

It stays flat

It expands sideways

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT part of the respiratory system?

Trachea

Bronchi

Oesophagus

Larynx

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main gas taken into the body during inhalation?

Carbon dioxide

Nitrogen

Oxygen

Hydrogen

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main waste gas removed from the body during exhalation?

Oxygen

Carbon dioxide

Nitrogen

Helium

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