Study Resources: Respiration Mechanism

What is rrespiration? Discus Shin, gills, Lunge air Sacs Res Pircation through mechanism throug ↑ Accesory gland? Ans : Respireation means intake of o₂ and get to getting reid of cos by a living organism. The system designed fore enchange of gases between the orege organism and its environment →The body structure which are needed fore between the blood f Known gaseous exchange the surrounding medium are as Respiratory oregan. skin: amphibians respiration naked skin which is is common highly vascular. through moist and Lungless setos Salamanders Skin for respiration are entirely depend upon City Respiration thrweigh skin also called cutaneoces Respimation Gritts & Grills are the aquatic respiratory ongan of fishes and amphibians. (ii) In addition to gain of water. gas enechange, gills may Serve fort loss oe Lin) on the basis of theire location. gius ius arce of 2 types ie gill and internal gills. In some animal both enternal gill internal & external gills are present. internal ore true gills :- Internal on true ins are charcecheristic of fisher. Ther gius are located in the gill slits and attached to the visceral arch. (Grino slits arce then one of the most fundamental treaits of Chondades Chordata. In embryo The pharyn gel cavity connect to the outside - "a Series of lateral opening known as gin site. (iv) The no. of gill slits vareries in differcent choredades. Typically a giu is composed of gills en fellaments ore lamellae. two rows of numerous (vi) A single reow of lamellou forms only on one side of branchial ser halt the gil called demibranch ore hemi breanch ↑ septem with taro attached demibreanches comprises wi Gill filaments are and it is here that reichly supplied with blood capilaries! exchange of gaus with F₂o takes place. External gens:- i go against true geur, the enderenal glus are formed cas branching outgrowth from the exposed outer epithelicem of gill anches and do not from that the It is tempe temporary organ pharyngeal pouches organ, becaus it is Found in rusually lanval stager So that External gilu are ho current they are called lanval geles. Simply waved on water, & no respiratory passes thorough geus slits al in case or treue give Lungs Lungs are the essential una reshes. lung respiratory organs of land ventibuda (i) they are very elaster and distensible. Ch They aure derived from the lost pour of do not opens to ensterclon through gill slete... gells pouches which fis trengs Received blood supply from 6th aortic arche It bifurcater into Left & right lung t buds. common porction developed into The condevide wintpole or trachea and laryn and opens into pharynx thorough glottis (n) Each tungbude breanchee repeatedly & geoas posterclonty fib coelum invested by mesodermi. (vii) It contain lymph, blood vessels, nenver, smoth muscles connective tissue fin sacs (1) Are sacs are spaces within an cokeganism where there is the constant presence of I Binde ane posses the most are sat. Con respiration they tue ain cou Aire Sacs fire sacs are spuces within an constant presence of oure posses, altre sacs... organism where there Among moderen animals bireds the They enlange) arce formed by the dilation of mucos membrane the viscera, and even at (being of bronchous. extend into some Their tatal vokeme, is they fell up widen on they lie among of the larger bones Severcal time than that of, much of the body cavity. hungs "(iv) Bireds use afre sac for respiration Other things. as well as no or Accessorey Respiratory organs :- Although gins serves as chier reespiccatore aquatic vertebrates and Lungs Respiratory organs of Serves, for terrestrial Vertebrales in a similar way other straiteures are also provide accessory reaspiratory mechanism fore intake of y Er directly from H₂OQin 1. Yolk sac & allantois ( Al embryonic vertebrates use yolk sac with As viteshe circulation of Fore gaseous enchange yolk which is wed for food. in addition to observing (i) yolk sac or or do dog fish embryo $ yolk sae placenta of the marsupials, in contact with edercine wall devices. Serves as respinal (ili) In replètes, bireds & mammals or allantois and allantočc vessels also become chering embryonic Life temporary respircatorcy organs 2. cloacal bladderes Reptilian skin is corenified and useless in respiration. But, is some aquater turcties walled lateral and greally a pain of latengas thin- vastulan chacal bladden continuosly being relied ass and emptied These necess of H₂0 thicough vent & bladden serves as imp. respiratory organs, especiallel durcing tabmergence for longen durations.