RESPIRATORY SYSTEMIMPORTANT POINTS

Nasal Cavity

Nose

Mouth

Bronchus

Bronchiole

Alveolus

Diaphragm

Throat (pharynx)

Windpipe (Trachea)

Left lungs

Ribs

PA

RTS

OF T

HE

RES

PIR

ATO

RY

S

YS

TEM

AIR PATHWAY

Nose/ Nostrils Nasal

cavity

Pharynx/ Throat

Trachea/Windpip

eBronchi

Bronchioles

Alveoli/ air sacs

Mouth/ Oral

Cavity

Larynx/Voicebo

x

BREATHING MECHANISMTYPE OF

BREATHING

ORGAN

Inhalation(air

enters)

Exhalation

(air exits)

LUNGS Expands Contracts

DIAPHRAGM

Goes downwardcontracts

Goes upwardrelaxes

IMPORTANT POINTS1. THE NOSE FILTERS AND WARMS THE ENTERING

AIR.

2. AIR ENTERS THE NOSE OR MOUTH, GOES DOWN THE TRACHEA AND BRONCHUS, AND ENDS IN THE ALVEOLI.

3. GASES ARE EXCHANGED AT THE ALVEOLI.

4. THE DIAPHRAGM AND RIB MUSCLES WORK TOGETHER TO EXPAND AND CONTRACT THE SIZE OF THE CHEST CAVITY.

5. BREATHING IS THE MECHANICAL PROCESS OF PUMPING AIR INTO AND OUT OF THE LUNGS.

6. THE GAS THAT WE TAKE (INHALE) IS OXYGEN AND THE GAS THAT WE BREATHE OUT (EXHALE) IS CARBON DIOXIDE.

7. THE CHEMICAL PROCESS IN WHICH OXYGEN AND CARBON DIOXIDE ARE EXCHANGED BETWEEN THE OUTSIDE AIR AND THE CELLS IS CALLED RESPIRATION.

MULTIPLE CHOICE QUESTION

1. THE MAIN FUNCTION OF THE RESPIRATORY ORGAN SYSTEM IS ___________BETWEEN THE

ORGANISM AND THE ENVIRONMENT.

A. GAS EXCHANGEB. TAKING IN OXYGEN

C. CONTROL BREATHINGD. FILTER AIR

MULTIPLE CHOICE QUESTION

2. WHEN YOU HOLD YOUR BREATH, WHICH OF THE FOLLOWING FIRST LEADS TO THE URGE TO BREATHE?

A. FALLING CO2

B. FALLING O2

C. RISING CO2

D. RISING PH OF THE BLOOD

MULTIPLE CHOICE QUESTION

3. WHEN YOU INHALE, THE DIAPHRAGM

A. RELAXES AND MOVES UPWARD B. RELAXES AND MOVES DOWNWARDC. CONTRACTS AND MOVES UPWARD

D. CONTRACTS AND MOVES DOWNWARD

MULTIPLE CHOICE QUESTION

4. WHERE DOES EXCHANGE OF GASES TAKE PLACE?

A. ALVEOLI

B. BRONCHIOLES

C. BRONCHI

D. DIAPHRAGM

MULTIPLE CHOICE QUESTION

5. THE CHEMICAL PROCESS IN WHICH OXYGEN AND CARBON DIOXIDE ARE EXCHANGED BETWEEN THE

OUTSIDE AIR AND THE CELLS IS CALLED

A. BREATHING

B. EXHALING

C. INHALING

D. RESPIRATION

WRITE IN COLUMN B THE CORRECT SEQUENCE OF THE AIR PATHWAY IN THE

RESPIRATORY SYSTEM.

ANSWER THE QUESTION FOR 3 POINTS.

WHAT CAUSE THE AIR TO GO IN AND OUT OF YOUR LUNGS?