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Grade 10 Respiratory System Worksheet with Answers

Grade 10 (US) · Year 11 (UK) · Class 10 (India) · Biology

How we breathe: the lungs, trachea and diaphragm, and the exchange of oxygen and carbon dioxide. This free high school worksheet has 12 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.

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Respiratory System

Grade 10 · Biology

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Class

Date

Learning goal: Body Systems

Directions: Read each question carefully and write your answer on the line.

Example

Which organs do you use to breathe?

Answer: the lungs

RememberPath of air (respiratory system)

1
What happens to the diaphragm when you breathe in?
2
What muscle below the lungs helps you breathe in and out?
3
What gas do we breathe in that our body needs?
4
Which two body systems work together to deliver oxygen to cells?
5
How does smoking harm the respiratory system?
6
What do the tiny hairs in your nose do?
7
What gas do we breathe out as waste?
8
What tiny air sacs in the lungs are where oxygen enters the blood?
9
What are the two tubes the trachea splits into, one for each lung?
10
What protects the lungs?
11
What is the tube that carries air from your throat to your lungs called?
12
What happens to the diaphragm and rib cage when you breathe out?

★ Challenge corner for fast finishers

Why does a spinning ice skater spin faster when she pulls her arms in?

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Teacher's comments

Free printable worksheets with answer keys · aethelsystems.com/worksheets/biology/10/body_respiratory

Answer key (click to show)

1.it contracts and moves down, making room for air
2.the diaphragm
3.oxygen
4.the respiratory and circulatory systems
5.it damages the alveoli and airways, making it harder to take in oxygen
6.trap dust and germs before they reach the lungs
7.carbon dioxide
8.alveoli
9.the bronchi
10.the rib cage
11.the trachea (windpipe)
12.the diaphragm relaxes and moves up, and the ribs move in, pushing air out
★conservation of angular momentum (challenge corner)

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