Respiration wo prakriya hai jisme nutrients kaam ki energy mein badalte hain. Sharir ke andar oxygen glucose ko todkar energy deti hai, aur carbon dioxide aur paani bante hain.

Saans lene mein diaphragm ka kya kaam hai?

Diaphragm lungs ke neeche gumbad jaisi maaspeshi hai. Jab ye neeche jaata hai, chhaati mein zyaada jagah banti hai aur hawa andar aati hai; jab upar jaata hai, jagah kam hoti hai aur hawa baahar nikalti hai. Yaani ye inhalation aur exhalation mein madad karta hai.

Mendhak saans kaise lete hain?

Tadpole ke roop mein wo gills se saans lete hain. Bade mendhak zameen pe lungs istemaal karte hain, aur paani mein hon to apni skin se gases badalte hain.

Jaanwar saans kaise lete hain?

Koi sawal atak gaya? Photo lo, Lagnever AI step-by-step samjhayega. 7 din ka trial sirf ₹2. Google Play se app lo

Saans aur respiratory system

Hum khaane ke bina kuch din aur paani ke bina ek-do din reh sakte hain, par saans ke bina aam taur pe sirf kuch minute. Breathing yaani hawa ko lungs mein lena aur baahar nikaalna. Ye respiratory system ke zariye hota hai.

Respiratory system: nostrils, do shaakhaon mein bantti windpipe, baareek naliyon waale lungs jo alveoli pe khatm hote hain, rib cage aur diaphragm — Hawa ka raasta

Hawa do nostrils se nasal passages mein aati hai, jahan chhote baal aur mucus dhool aur gandagi rok lete hain; isiliye naak se saans lena behtar hai. Hawa windpipe se neeche jaati hai, jo do shaakhaon mein bant jaati hai, har lung ke liye ek. Lungs ke andar shaakhaayein baar-baar bantti hain aur chhoti gubbaare jaisi thailiyon, alveoli, pe khatm hoti hain. Rib cage lungs ko bachaata hai.

Hawa andar aur baahar kaise jaati hai

Bottle model jisme rubber sheet neeche kheenchne pe do gubbaare bharte hain, aur saans andar aur baahar karte samay ribs aur diaphragm waali chhaati — Model aur asli chhaati

Activity 9.2 mein ek bottle ke Y jaisi nali pe do gubbaare hain aur uske tale pe rubber sheet hai. Sheet neeche kheenchne pe gubbaare phool jaate hain; upar jaane dene pe pichak jaate hain. Gubbaare lungs hain aur sheet diaphragm, jo lungs ke neeche gumbad jaisi maaspeshi hai. Jab hum inhale karte hain, ribs upar aur baahar jaati hain aur diaphragm neeche jaata hai, isliye chhaati mein zyaada jagah banti hai aur hawa andar aati hai. Jab hum exhale karte hain, ribs neeche aur andar jaati hain aur diaphragm upar jaata hai, aur hawa baahar dhakel di jaati hai.

Hum kya saans chhodte hain

Activity 9.3 mein pichkari se lime water mein daali gayi kamre ki hawa use saaf chhod deti hai, par straw se phoonki saans use doodhiya kar deti hai. Lime water carbon dioxide se doodhiya hota hai, isliye chhodi gayi saans mein zyaada carbon dioxide hoti hai.

Lime water kamre ki hawa se saaf rehta hai aur chhodi gayi saans se doodhiya ho jaata hai — Carbon dioxide ka test

Gas	Andar li hawa → chhodi hawa (lagbhag)
Oxygen	21% → 16–17%
Carbon dioxide	0.04% → 4–5%

Yaani andar li gayi saari oxygen istemaal nahi hoti.

Gas exchange aur respiration

Alveoli ki deewaarein patli hain aur baareek blood vessels se ghiri hain. Oxygen alveoli ki hawa se blood mein jaati hai, aur carbon dioxide blood se alveoli mein aakar saans ke saath baahar nikal jaati hai. Dil blood ko blood vessels mein pump karta hai, yaani circulatory system, jo oxygen aur nutrients har jagah le jaata hai.

Alveolus pe oxygen blood mein jaati aur carbon dioxide baahar aati hui, aur respiration ka equation — Aadaan-pradaan aur energy

Sharir ke andar oxygen pache khaane ke glucose ko todkar energy deti hai. Ye respiration hai:

Glucose + oxygen → carbon dioxide + paani + energy

Is energy se hum chalte, daudte, khelte aur sochte hain. Breathing ek physical process hai; respiration ek chemical process.

Lungs ka khayal

Smoking lungs ko nuksaan pahunchaati hai aur lung cancer ka khatra badhaati hai, aur paas ke log passive smoking se pareshaan hote hain. Kuch infections, jaise COVID-19 waala virus, respiratory system pe hamla karte hain. Pranayama aur Ladakh ki Tummo breathing jaise saans ke abhyaas lambe samay se saans aur shaanti badhaane ke liye kiye jaate hain.

Doosre jaanwar kaise saans lete hain

Cards: zameen ke kai jaanwaron mein lungs, machhli mein gills, mendhak mein pehle gills phir lungs aur skin, kenchue mein geeli skin — Saans lene ke kai tareeke

Pakshi, haathi, sher, gaay, bakri, chhipkali aur saanp lungs se saans lete hain, haalaanki unke lungs ki banaavat alag hoti hai. Zyaadatar paani ke jaanwar, jaise machhli, mein gills hote hain, jinme bahut blood vessels hoti hain aur jo paani mein ghuli oxygen lete hain. Mendhak tadpole ke roop mein gills, aur bade hokar zameen pe lungs aur paani mein skin istemaal karte hain. Kenchue apni geeli skin se gases badalte hain. Har tareeka jaanwar ke rehne ki jagah ke hisaab se hai.

Ye kyun zaroori hai

Har harkat aur har soch ko energy chahiye, aur wo energy respiration se aati hai, jo saans pe tiki hai. Khaana kaise pachta hai, ye dobara dekho jaanwaron mein poshan aur paachan mein. Textbook ke sawaalon ke jawab Chapter 9 ke NCERT solutions mein hain; poore Chapter 9 ke notes dekho.