RESPIRATORY

SYSTEM

Why, oh why? Or else we’ll die!

Our Respiratory System provides our body with __________

for the purpose of ____________________. The energy (or

______) produced during respiration is used for

____________ processes and to maintain ____________

(dynamic equilibrium). In addition, this system allows us to

expel _________________.

Oxygen

Aerobic Respiration

ATP

Metabolic Homeostasis

Carbon Dioxide

How do other organisms Respire?

Stomates: Openings on the underside of leaves lets

plants exchanges

gases.

Skin: Worms exchange gases

through their moist skin. **If worms dry out

they can’t respire!**

Fish: Use gills to absorb oxygen from the water and

release carbon dioxide.

Plant RespirationPlant Respiration• Lenticles are small holes in woody stems of plants that allow for gas exchange.

• 3 Places Plants Exchange Gases:

• Roots

• Stomates

• Lenticles

Human Respiratory System

3

h

12

Nose

Mouth

Nasal Cavity

The Nasal Cavity has space which _____ the air, mucus membranes which the air and nose hairs which the air.

warmsmoistens

filters

Human Respiratory System

3

h

12

Nose

Mouth

Nasal Cavity

4

5Larynx

Pharynx

epiglottis

How do you speak, choke and/or have food come out your nose? Eww!!

Uvula, but what’s that hanging off it?

Adam’s apple

Click for cool link! Beatboxer Clip

Human Respiratory System

3

h

12

Nose

Mouth

Nasal Cavity

4

5Larynx

Pharynx

epiglottis

67

88

Trachea

Bronchi Bronchi

Bronchi and trachea: Rings of cartilage to keep open, mucus and beating hairs to clear passageway

Human Respiratory System

3

h

12

Nose

Mouth

Nasal Cavity

4

5Larynx

Pharynx

epiglottis

67

88 Bronchi

TracheaLung

Bronchi

9

10

Bronchiole

Alveoli

Lungs contain bronchioles and alveoli.

bronchiole1.

2. alveoli

3. capillary

• Alveoli are thin, one cell layer thick pockets surrounded by tiny blood vessels (called capilaries).

• Here oxygen diffuses

into the blood.

• Also carbon dioxide diffuses into the alveoli to be exhaled!

Human Respiratory System

3

h

12

Nose

Mouth

Nasal Cavity

4

5Larynx

Pharynx

epiglottis

67

88 (same)

TracheaLung

Bronchi

9

10

Bronchiole

Alveoli11Diaphragm

So……why do we breathe? And how?

We mostly breathe to rid ourselves of CO2

Inhale: ribs up and out, diaphragm down.

Exhale: ribs down, diaphragm up.

Respiratory Disorders:Respiratory Disorders:AllergiesAllergies

Allergies are caused by benign (non-harmful) substances causing a histamine response in the body.

Histamines cause:

sneezing runny nose watery eyes

Respiratory Disorders: ASTHMA

Causes of asthma:-Genetic-Exercise-Air contaminates (smog, pollen, cigarettes, etc)

What happens?-Muscles around the bronchioles tightens and won’t relax-Airways swell-Mucus is produced

This means there is less space in the airway and it becomes difficult to get enough oxygen in.

Respiratory Disorders: BRONCHITIS

Infection and inflammation caused by: virus, bacteria,

asthma, smoking

Feels Like

Smoking: The Self Inflicted Smoking: The Self Inflicted Respiratory Nightmare!Respiratory Nightmare!

Smoking causes:

Bad hair!

Bad stink!Bad teeth!

Bad skin!

ADDICTION!!

That was then…This is now!

Do you know this guy?Do you know this guy?

Smoking causes: EMPHYSEMA

Alveoli are overstretched and lose their elasticity. The walls between alveoli also break

down, leaving less surface area.

It feels like you can’t get enough

air.

Smoking causes

Cancer

laryngectomy

YouTube Clip