Mammal Respiratory System Basics

Name:

Date:

📚 Part 1: Multiple Choice & Matching

1. Why do mammals need oxygen?

To help digest food in the stomach

To provide energy for cells through respiration

To keep the bones strong

To make the blood red

2. Check all the main parts of the respiratory system:

Nasal cavity / nose

Trachea (windpipe)

Bronchi

Alveoli

Diaphragm

Liver

3. Where does gas exchange (oxygen in, carbon dioxide out) mainly occur?

In the bronchi

In the alveoli

In the trachea

In the diaphragm

4. What is the primary role of the diaphragm during breathing?

It moves air between lungs and stomach

It contracts to help draw air into the lungs

It filters dust from the air

It pumps blood around the body

5. Match each term with the correct function or description. Draw a line between the columns.

A. Nasal cavity

B. Trachea

C. Bronchi

D. Alveoli

1. Tiny sacs where oxygen enters blood

2. Main airway that leads to the lungs

3. Passages that split off to each lung

4. Warms and filters air entering the body

✏️ Part 2: Short Answers & Activity

WALT: We are learning to understand why mammals need oxygen, identify the main parts of the respiratory system, and explain how oxygen and carbon dioxide are exchanged in the alveoli.

6. Draw a simple labelled diagram of a mammal’s respiratory system. Include: nasal cavity (or nose), trachea, bronchi, lungs, alveoli and diaphragm.

7. In 2–3 sentences, explain how oxygen enters the blood and how carbon dioxide leaves the blood in the alveoli.

8. Fill in the blanks:

Air enters through the _________, travels down the _________, and reaches tiny sacs called _________ where gas exchange occurs.

Support & Extension

Differentiation (Support):

- Provide a labelled diagram to trace with a finger or highlighter for students who need extra help.

- Allow sentence starters: "Oxygen moves from the air into the blood because ________."

Extension (Advanced learners):

- Research how surface area and thin walls of alveoli help efficient gas exchange and write one paragraph.

- Investigate how exercise changes breathing rate and explain why in terms of oxygen demand.

Mammal Respiratory System Basics

Mammal Respiratory System Basics

📚 Part 1: Multiple Choice & Matching

✏️ Part 2: Short Answers & Activity

Support & Extension

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