Label the Parts of the Respiratory System

What is the difference between BREATHING and

RESPIRATION?

BREATHING= process of inhaling and exhaling

Fresh air in; stale air out

What is the difference between BREATHING and

RESPIRATION?

RESPIRATION = using oxygen to break down glucose in cells

*often called CELLULAR RESPIRATION

Breathing Clip

STRUCTURES OF THE RESPIRATORY TRACT

Nasal Cavity

o Moistens and warms air;

o Mucus & cilia help trap dust and debris

STRUCTURES OF THE RESPIRATORY TRACT

Pharynx

o Tube-like passageway

for air and food

STRUCTURES OF THE RESPIRATORY TRACT

Epiglottis

o Closes over larynx when you swallow(flap of tissue)

STRUCTURES OF THE RESPIRATORY TRACT

Trachea

o ~12 cm tube with C-shaped rings of cartilage; also has mucus & cilia

STRUCTURES OF THE RESPIRATORY TRACT

Larynx

o Airway to which your vocal cords are attached.

STRUCTURES OF THE RESPIRATORY TRACT

Bronchi

o 2 branches that carry air into lungs

STRUCTURES OF THE RESPIRATORY TRACT

Lungs

o Spongy, sac-like organs for exchanging O2 and CO2

STRUCTURES OF THE RESPIRATORY TRACT

Bronchioles

o Smaller branches of the bronchi

STRUCTURES OF THE RESPIRATORY TRACT

Alveoli

o Tiny, thin-walled sacs; in clusters; surrounded by capillaries

o Site where oxygen diffuses into the blood

STRUCTURES OF THE RESPIRATORY TRACT

Diaphragm

o Muscle separating the chest cavityfrom the intestines/gut.

o Contracts when we inhale.

Respiration by Brainpop

1. What is the main function of the respiratory system?

2. What is the dome-shaped muscle your lungs sit above called?

3. What kind of blood vessels surround the alveoli?

4. Where does your diaphragm go when you EXHALE?

Respiratory ProblemsAsthma:

• happens when bronchial tubes contract too quickly. Often aggravated by allergens.

Common allergens

Respiratory Problems

Chronic Bronchitis:

• Irritation of the bronchial tubes; produce too much mucus.

Respiratory Problems

Emphysema:

• happens when alveoli in lungs become enlarged; not enough oxygen goes into the blood

Respiratory Problems

Lung Cancer:

• Uncontrolled growth of cells in the lungs; often caused by smoking.

Smoking by

Brainpop