The Respiratory System

List the Sequence for Respiration

1. Breathing - oxygen is inhaled. 2. Circulation - Oxygen is carried to cells. 3. Respiration - Oxygen and glucose combine in a chemical reaction to release energy. 4. Circulation - Carbon dioxide is carried to th lungs. 5. Breathing - carbon dioxide is exhaled.

What are the two jobs of the respiratory system?

1. Place oxygen in the blood. 2. To remove gaseous wastes from the body.

Which body parts are responsible for making the chest cavity larger when you inhale?

1. Sternum 2. Chest muscles 3. ribs 4. The diaphragm

What is the common name for the Alveoli

Air sacs

What do people have in common with all living organisms?

All organisms must take in & release gases to survive.

In each of the two lungs, the bronchi divide into smaller branches which contain millions of tiny air sacs called _________.

Alveoli

How long can people survive without water? Why?

Approximately 3 days, because your body stores water just like food.

When astronauts travel in space, they must wear special helmets. Why?

Astronauts wear helmets go they are provided the oxygen they need in space. There is no oxygen in space.

Why can't people survive more than a few minutes without oxygen?

Because people can't store oxygen like food and water.

How are people like trees?

Both people and trees take in gasses and give off gasses.

The trachea is divided into two bronchial tubes, called ________________, which carry air to each lung.

Bronchi

What is the Chemical equation of Respiration?

C6H12O6 + 6O2 ------- (energy) and 6CO2 = 6H20

Each alveolus is lined with tiny blood vessels called ______________.

Capillaries

The waste product _____________ is given off in the gas exchange between air and blood in the alveoli. The carbon dioxide is released with the air that is exhaled, or breathed out.

Carbon Dioxide.

What are the tree jobs done by the blood vessels, cilia, and mucus in your nasal cavity?

Cilia & mucus trap dirt, dust and germs. Blood vessels warm up the air you breathe in.

The ________________ is a dome-shaped muscle found under the rib cage which assists during inhalation an exhalation.

Diaphragm

What does respiration release?

Energy

The __________ is a flap of tissue at the top of the larynx. It prevents food from entering the windpipe by covering the larynx when food is swallowed.

Epiglottis

When the diaphragm relaxes, it moves upward. This causes the ribs to move inward and downward an drakes the chest cavity smaller. Air is forced out of the lungs as you ________________.

Exhale.

Fish are able to breathe underwater. Why can't humans?

Fish have gills.

How much oxygen do you inhale? Exhale?

Inhale - 20.9 percent Exhale - 16.3 percent

What position must the diaphragm be in when you inhale? When you exhale?

Inhale - diaphragm contracts Exhale - diaphragm relaxes

When the diaphragm contracts, it flattens. This action forces chest muscles to pull the ribs upward and outward, making the chest cavity expand, and the lungs ___________ air.

Inhale.

What is expiration?

It involves the removal of wastes, gasses from the respiratory system.

What is inspiration?

It involves the taking in of oxygen throughout the respiratory system.

Why is the percentage of nitrogen inhaled and exhaled the same?

It remains the same because your body doesn't need nitrogen.

The ______________, or voice box, is located at the bottom of the Pharynx.

Larynx

Does your body have a way to store Oxygen?

No

Air is inhaled through the ______________, where it is filtered, warmed, and moistened.

Nose

What is the common name for the Nasal Cavity

Nose

_______________ from the fresh air that is inhaled is added to the blood in the capillaries of the alveoli. This oxygen-rich blood is then carried to the hear, where it is pumped out to all the cells of the body.

Oxygen

What two things must combine during respiration?

Oxygen and Glucose

How can the oxygen you bring into your body get into the circulatory system?

Oxygen passes through the Alveoli into the Blood Stream.

How long can people live without food? Why

People can live approximately 2 weeks without food because excess food is tired by your body as fat.

From the nose, air then passes through the ___________, which is the area behind the nose that leads to the throat.

Pharynx

Where does respiration take place?

Respiration takes place in the body cells.

The parts of the body that are used for breathing make up the ________________. This system provides oxygen to each of the cells of the body. Oxygen is needed by all cells to get energy from food. A waste product called carbon dioxide, given off by cells, is carried away by this system.

Respiratory System

What happens to the air pressure in your chest cavity when your diaphragm contracts?

The air pressure decreases causing air to enter your lungs.

What happens to the air pressure in your chest cavity when your diaphragm relaxes?

The air pressure increases causing air to exit your lungs.

Why does the respiratory system need to pass oxygen to the blood?

The blood is what delivers oxygen to the cells.

How does the circulatory system work with the respiratory system in the sequence for respiration?

The circulatory system carries food molecules to the cells to combine with oxygen to form glucose, also the circulatory system also carries oxygen from the lungs.

How does the circulatory system help the respiratory system get rid of gaseous wastes?

The circulatory system releases CO2 or gaseous wastes to the lung where it is exhaled from the body.

How does the digestive system work with the respiratory system in the sequence for respiration?

The digestive system in traduces food molecules to the circulatory system so it can travel to the cells.

Why is it better to breathe in through your nose instead of breathing in through your mouth?

The nasal cavity (nose) filters the air you breathe better.

Which body parts are responsible for making the chest cavity smaller when you exhale?

The ribs

Why does your trachea need to have cartilage rings?

The trachea has rings to keep it open at all times.

What is the common name for the Pharynx

Throat

What is the common name for the Cilia

Tiny hairs

Why does the pharynx need to have cilia?

To help catch dirt & germs that don't get caught by the nose.

What is the first job of the respiratory system?

To pass oxygen from the air to the blood.

What is the second job of the respiratory system?

To remove gaseous wastes from the body.

At the bottom of the larynx is the windpipe, also known as the ______________.

Trachea

__________________, which produce the sounds of voices, are contained in the larynx.

Vocal cords.

What is the common name for the Larynx

Voice box

What are the wastes created during respiration?

Water and CO2

Why does air move in or out of your respiratory system?

When air enters the respiratory system we get oxygen & when air exits the respiratory system we get rid of CO2.

What is the common name for the Trachea

Wind pipe

My mother has always told me it is important to go outside every day and get some fresh air. Was she correct?

Yes, because the air outside is fresher than the air inside.

Suppose you want to whisper to the student next to you in class, what must you remember to do with your vocal cords?

You must pass or exhale small amounts of air through your vocal cords.

Why do you need two bronchi?

You need two bronchi because you have two lungs.

When I have a cold, it is hard for me to breathe. I don't have much energy. Why do you think this happens? (consider the process of respiration.

Your lungs can't take in enough oxygen because of your cold. Not enough oxygen and you will feel tired.

Why does the amount of oxygen change?

Your lungs remove some oxygen from the air and put it in your blood for all cells in your body.