human breathing mechanism.ppt

7/23/2019 human breathing mechanism.ppt

http://slidepdf.com/reader/full/human-breathing-mechanismppt 1/22

1.1 human breathing1.1 human breathing

mechanismmechanism



HUMAN RESPIRATORY SYSTEMHUMAN RESPIRATORY SYSTEM



HUMAN BREATHING MEANISMHUMAN BREATHING MEANISM



AIR PATH ENTER THE !UNGS AIR PATH ENTER THE !UNGS

NOSE

TRAHEA

BRONHI

BRONHIO!ES

A!"EO!I



#HAT IS RESPIRATION$#HAT IS RESPIRATION$

RESPIRATION RE%ERS TO THERESPIRATION RE%ERS TO THE

%O!!O#ING PROESS&%O!!O#ING PROESS&

1. EXTERNAL RESPIRATION2. INTERNAL RESPIRATION



EXTERNAL RESPIRATION

BREATHING

BREATHING IS A PHYSICAL

PROCESS IN WHICH

AIR IS INHALED (TAKEN IN)

OR EXHALED (GIVEN OUT)

BREATHING IS A PHYSICAL

PROCESS IN WHICH

AIR IS INHALED (TAKEN IN)OR EXHALED (GIVEN OUT)



INTERNAL RESPIRATION

CELL RESPIRATION

CELL RESPIRATION

TAKES PLACE WHEN

FOOD IS OXIDISED AND

ENERGY IS PRODUCED.

CELL RESPIRATION

TAKES PLACE WHENFOOD IS OXIDISED AND

ENERGY IS PRODUCED.



AS A ON!USION ' #E OBTAIN AS A ON!USION ' #E OBTAIN

OUR ENERGY %ROM THEOUR ENERGY %ROM THEPROESS O% RESPIRATION.PROESS O% RESPIRATION.



BREATHING MEHANISMBREATHING MEHANISM

THERE ARETHERE ARE T#O STAGEST#O STAGES..

1.1. AIR INHA!ATION AIR INHA!ATION(.(. AIR E)HA!ATION AIR E)HA!ATION





The *r+cess +, inha-ati+n anThe *r+cess +, inha-ati+n an

e/ha-ati+ne/ha-ati+n

RIB CAGE

DIAGPHRAGM



0URING INHA!ATION0URING INHA!ATION

Tho!"#" "!$#%&Tho!"#" "!$#%& '"o*'"o*

'#++ '#++ ..

A# ,**-A# ,**- "!*"!*..Th h#+h !# ,**-Th h#+h !# ,**-

o-%*# /o"* !# %oo-%*# /o"* !# %o /0o #%o/0o #%o

%h 0-+%h 0-+..

A# ,**-A# ,**-

CONTRACTS3 MOVESCONTRACTS3 MOVES

DOWNWARDS ANDDOWNWARDS ANDFLATTENSFLATTENS

DIAPHRAGMDIAPHRAGM

MOVES UPWARD ANDMOVES UPWARD AND

OUTWARDOUTWARDRIB CAGERIB CAGE



0uring e/ha-ati+n0uring e/ha-ati+n

Tho!"#" "!$#%&Tho!"#" "!$#%& '"o*'"o*

*!00 *!00 ..A# ,**-A# ,**- #"!*#"!*..

Th h#+h !# ,**- # %hTh h#+h !# ,**- # %h

0-+0-+ /o"* %h !# o-%/o"* %h !# o-%..

A# ,**-A# ,**-

EXPANDS AND CURVESEXPANDS AND CURVES

UPWARDSUPWARDS

DIAPHRAGMDIAPHRAGM

MOVES DOWNWARDS ANDMOVES DOWNWARDS AND

INWARDSINWARDSRIB CAGERIB CAGE



THE STRUTURE O% THETHE STRUTURE O% THE

!UNGS!UNGS



ATI"ITY 1.1& AIR PRESSURE IN THE ATI"ITY 1.1& AIR PRESSURE IN THE

THORAI A"ITY AN0 THE PROESS O%THORAI A"ITY AN0 THE PROESS O%

INHA!ATION AN0 E)HA!ATIONINHA!ATION AN0 E)HA!ATION



1. AIM&1. AIM&

T+ Stu the re-ati+nshi* bet2een airT+ Stu the re-ati+nshi* bet2een air*ressure in the th+racic ca3it an the*ressure in the th+racic ca3it an the

breathing mechanism.breathing mechanism.

(. A**aratus&(. A**aratus&

Be-- 4ar' Y sha*e g-ass tube' ba--++ns' airBe-- 4ar' Y sha*e g-ass tube' ba--++ns' air

s*ace' rubber sheets*ace' rubber sheet



5. +bser3ati+n5. +bser3ati+n

#hat ha**ens t+ the ba--++n 2hen the#hat ha**ens t+ the ba--++n 2hen the

rubber sheetrubber sheet *u--e +2n2ars*u--e +2n2ars$$

#hat ha**ens t+ the ba--++n 2hen the#hat ha**ens t+ the ba--++n 2hen the

rubber sheetrubber sheet *ushe u*2ars*ushe u*2ars$$

the ba--++n 2i-- e/*an

the ba--++n 2i-- shrin6



7. 0iscussi+n7. 0iscussi+n

Name the *arts +, the res*irat+r sstem re*resente bName the *arts +, the res*irat+r sstem re*resente b

0ia*hragm0ia*hragmRubber sheetRubber sheet

!ungs!ungsBa--++nsBa--++ns

Trachea an br+nchiTrachea an br+nchiY8sha*e g-ass tubeY8sha*e g-ass tube

Th+racic ca3itTh+racic ca3itBe-- 4ar Be-- 4ar



Name the *r+cess simu-ate 2hen theName the *r+cess simu-ate 2hen the

rubber sheet isrubber sheet is *u--e +2n.*u--e +2n.

Name the *r+cess simu-ate 2hen theName the *r+cess simu-ate 2hen the

rubber sheet isrubber sheet is *ushe u**ushe u*..

Inha-ati+nInha-ati+n

e/ha-ati+ne/ha-ati+n



THE STRUTURE O% THE !UNGS.THE STRUTURE O% THE !UNGS.

TRAHEATRAHEA

BRONHIBRONHI

BRONHIO!ESBRONHIO!ES

A!"EO!I A!"EO!I

API!!ARIESAPI!!ARIES

T!"h! D#$#* I%o ToS!00 T-'* C!00 Bo"h#

Th 'o"h# #$#

#%o *!00 '!"h*

"!00 'o"h#o0* E!"h Bo"h#o0

* %o /o ! +o-,o/ !0$o0#

!"h !0$o0-* #*

*-o- '& %o4

o/ '0oo $**0 "!00

"!,#00!#*.





in,erencein,erence

#hen S is *u--e +2n' the 3+-ume +, the#hen S is *u--e +2n' the 3+-ume +, the

be-- 4ar 2i-- ibe-- 4ar 2i-- increasencrease' there,+re the air' there,+re the air

*ressure insie the be-- 4ar 2i--*ressure insie the be-- 4ar 2i-- ecrease.ecrease.

Air *ressure +utsie the be-- 4ar is bigger Air *ressure +utsie the be-- 4ar is bigger

than the insie' s+ it ,+rces the air t+ ,-+2than the insie' s+ it ,+rces the air t+ ,-+2

int+ the ba--++n.int+ the ba--++n.

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human breathing mechanism.ppt