Respiratory System (Day 2)

Respiratory System

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Poll

How are you doing?

• I'm great!

• I'm okay

• Meh

• I've been better

• I'm not doing my best.

Open Ended

What is your favorite thing to read (It can be a book, manga, magazine, or newspaper etc?

Open Ended

What is one (1) thing you know about the Respiratory System?

Breathing and Respiration

The respiratory system can be divided into two processes: Breathing and Respiration

First, breathing takes place. Breathing, also known as ventilation, is the mechanical movement of air into and out of your lungs. 

Second, gases are exchanged in your body by the two types of respiration. External respiration, which is the exchange of gases between the atmosphere and the blood (this take place in the lungs). Internal respiration is the exchange of gases between the blood and the body’s cells.

Multiple Select

CFU: What are the two (2) processes of the respiratory system?

• Breathing

• Perspiration

• Respiration

• Digesting

Why do we have to breathe?

One of the main things our body needs is energy. When we eat our body digests the food to get complex molecules like glucose (sugar), which it can use for energy. However, food alone isn't enough. The cells also need oxygen to react with the glucose to create the energy. We get the oxygen to our cells with the respiratory system and by breathing. 

Breathing In 

We breathe in using a muscle called the diaphragm. It flattens out making our lungs expand and fill with air. When we breathe in, air gets forced through our nose or mouth, down our windpipe, and into bronchi tubes in our lungs. These bronchi tubes branch out and get smaller and smaller, like the roots or branches of a tree. 

Multiple Choice

What muscle do we use to breath in?

• Stomach

• Lungs

• Diaphragm

• Nose

Breathing Out 

At the end of the smallest branches of the bronchi are tiny air sacs called alveoli. These air sacs have a very thin, one cell thick wall that allows oxygen to be passed to red blood cells as they are passing by. There are hundreds of millions of these tiny guys in our lungs.

The alveoli don't just pass oxygen to our blood, they also help to clean out waste gas from our blood cells. This waste gas is carbon dioxide. When we need to breathe the carbon dioxide out of our lungs, the diaphragm bows up and pushes the air back out, getting rid of the carbon dioxide. This makes room for fresh air with new oxygen to come back in on our next breath. 

Our Nose 

The nose does more for breathing than just providing a place for air to enter our body. It also helps to filter the air of dust and other stuff. It does this by using lots of hairs and mucus. It also helps warm up the air prior to getting to our lungs. 

Multiple Select

Why is our nose an important part of the respiratory system?

• It provides a place for air to enter our body.

• It filters the air before it enters our body.

• It cools the air before in enters our body.

• It warms the air before it enters our body.

Why do we get out of breath? 

When we run or do strenuous activity, our muscles burn energy and use up the oxygen in our red blood cells. To try and get more energy and oxygen to these cells, our heart will pump faster to get more blood through the lungs. At the same time our lungs will try to breathe harder and faster to get more oxygen. We end up feeling out of breath and have to take a rest so our bodies can recover.

Talking 

The respiratory system also helps with talking. We couldn't talk without air. By forcing air through our vocal chords, the respiratory system helps them to vibrate and create sound like talking, singing, or shouting. 

Exit Ticket (Summary)

Complete the next 3 questions to show your understanding.

Poll

How well did you understand the lesson?

• Great! I could teach this!

• Pretty well!

• Not so well.

• Please reteach.

Multiple Choice

What part of the respiratory system is this?

• Trachea

• Lungs

• Nose

• Larynx

Multiple Select

Choose a disease of the respiratory system!

Escoge una enfermedad del Sistema Respiratorio

• Diarrhea

• Bread

• Asthma

• Laryngitis

Multiple Choice

Complete the names of the parts of the respiratory system.Completa los nombres de las partes del sistema respiratorio.

• Head, Shoulders, Knees and toes

• Eyes, ears, mouth

• Nasal cavity, Pharynx, Trachea, Bronchi, Lungs

• Lungs, Stomach, Heart