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The HumanBreathingSystem(Respiratory System)

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The Human Breathing System

Breathe in and out.

Notice your chest and belly moving andfeel the soft air passing from the nose.

Listen to the uiet sounds of breathingin and out. !magine the air moving fromthe nose into the throat" through the air

tubes" and into the airsacs.

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#arts of the RespiratorySystem

The parts of the respiratory

system that are in charge ofsupplying o$ygen are the nose"nasal passageways" windpipe"lungs" and diaphragm.

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The Breathing #rocess !n the nose and nasal passages" the

entering air is made %arm" damp" and

clean of un&no%n particlesNe$t" the air moves do%n through the

trachea" bronchi" bronchioles" andalveoli.

Tracheais the empty tube that servesas passage%ay of air into the lungs.

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'ontBronchiare the t%o branching tubes

that connect the trachea to the lungs.

Bronchiolesare the hairli&e tubes thatconnect to the alveoli

Alveoliare the airsacs that allo% gase$change in the lungs.

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Human respiratory system #arts of the respiratory system

includeTrachea

Bronchi

Bronchioles

*lveoli

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*ctivity No. +(,hat a Bunch of -rapes)

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RespirationThe process %herein the body ta&es in

o$ygen and eliminates gaseous %aste

products

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/ivision +. 2pper Respiratory Tract

3 nose

3 nasal passages

3 throat or pharyn$

4. Respiratory air%ays

3 voice bo$ or laryn$

3 trachea

3 bronchi

3 bronchioles

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5. Lungs

3 respiratory bronchioles3 alveolar sacs

3 alveoli

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5 Types of Respiration '6LL2L*R R6S#!R*T!1N

3 is the biochemical o$idation ofglucose and conseuent synthesis ofadenosine triphosphate (*T#)

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!NT6RN*L R6S#!R*T!1N there is an e$change of o$ygen (14)

and

carbon dio$ide ('14) bet%een the internalbody 7uid and individual cells.

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68T6RN*L R6S#!R*T!1N !nvolves the e$change of 14 and '14

bet%een the environment and theorganism.

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#*TH,*9 1: *!R !NS!/6 TH6 B1/9+. N1S6

3 serves as the ;rst organ in the respira

tory system %here air passes through

3 is divided into the right and left nasal#assages by a cartilage called N*S*LS6#T2< %hich separates the nostrils

= '!L!*3 microscopic ;ngerli&e

e$tensions=

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= '1*RS6 H*!R

3 help trap and prevent dirt and largeparticles from entering further into therespiratory tract.

>> it is in the nasal passages that air is

moistened and %armed.

4. #H*R9N8

5. L*R9N8 or ?1!'6 B18

3 contains the vocal chords" that vibrates%hen air passes %ithin the cords" creatingsounds

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@. TR*'H6* or ,!N/#!#6

3 is a tube made up of cartilage %hichcarries air to%ard the lungs

3 a hollo% tube that serves aspassage%ay of air into the lungs

A. BR1N'H! (pl.) BR1N'H2S (sing.)

3 also called bronchial tubes t%obranching tubes that connect the trachea

to the lungs

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C. BR1N'H!1L6S

3 microscopic tubes3 the ;ner subdivisions of the bronchi

3 hairli&e tubes that connect to thealveoli

D. *L?61L! or *!R S*'S ( alveolus)

3 the sites of gas e$change

>> 6ach lung has about 5EE millionalveoli.

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