5th Grade Respiratory System Review

Questions and Answers

Label the parts of the respiratory system.

Major parts of the respiratory system

What is the function of the respiratory system?

To supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body.

Where does air enter the body?

Through the nasal cavity (nose) and/or the mouth

After the air enters the body, where does it go?

To the trachea and then to the lungs Signup and view all the answers

What are the 'tubes' called that 'branch' from the trachea?

Bronchi Signup and view all the answers

What are the small, stretchy air sacs on the end of the bronchioles called?

Alveoli Signup and view all the answers

Explain what happens in the alveoli.

Oxygen from the air passes through the walls of the alveoli into capillaries and carbon dioxide is passed out. Signup and view all the answers

What is your diaphragm? What is its job in the respiratory system?

The diaphragm is a strong muscle just below the lungs that moves downwards and upwards during breathing. Signup and view all the answers

What is the pharynx?

The cavity behind the nose and mouth that connects them to the esophagus Signup and view all the answers

What is the larynx?

An air passage to the lungs that holds the vocal cords; it's known as the voice box. Signup and view all the answers

How do the respiratory system and the circulatory system work together?

When you breathe in, your respiratory system brings in fresh oxygen which goes into your lungs and then into your heart, pumping it into the bloodstream. Signup and view all the answers

What is the epiglottis?

A flap in the throat that blocks the windpipe when food or liquid is being swallowed. Signup and view all the answers

Study Notes

Parts of the Respiratory System

Major parts include nasal cavity, trachea, bronchi, bronchioles, alveoli, diaphragm, pharynx, larynx, and epiglottis.

Function of the Respiratory System

Supplies blood with oxygen for delivery to body cells.
Accomplished through breathing: inhaling oxygen and exhaling carbon dioxide.

Air Entry Points

Air enters the body through the nasal cavity (nose) and/or mouth.

Air Pathway

After entering, air travels to the trachea, which leads to the lungs.

Bronchi

The "tubes" branching from the trachea are called bronchi.

Alveoli

Small, stretchy air sacs located at the end of bronchioles, crucial for gas exchange.

Gas Exchange in Alveoli

In the alveoli, oxygen passes through walls into capillaries, while carbon dioxide is expelled.

The Diaphragm

A strong muscle located just below the lungs.
It moves downwards and upwards to assist in inhalation and exhalation.

Pharynx

A cavity situated behind the nose and mouth, connecting them to the esophagus.

Larynx

Serves as an air passage to the lungs and contains the vocal cords, acting as the voice box.

Interaction with Circulatory System

Fresh oxygen enters the lungs, then goes to the left side of the heart.
The heart pumps oxygenated blood into the bloodstream to nourish cells.

Epiglottis

A flap in the throat that prevents food or liquid from entering the windpipe during swallowing.

Description

Test your knowledge of the respiratory system with this fun 5th-grade flashcard quiz. You'll learn to label its major parts and understand its essential functions, including how it supplies oxygen to the blood. Perfect for students preparing for their science exam!