Excretory Products and Their Elimination

Excretory Products and Their Elimination

EXCRETORY PRODUCTS AND THEIR ELIMINATION EXCRETION EXCRETORY PRODUCTS EXCRETORY ORGANS www.sblifescience.in 1 EXCRETION The process of elimination of waste materials from the body is called excretion. Excretion helps

to keep a constant internal environment in the body www.sblifescience.in 2 EXCRETORY ORGANS The organs concerned with excretion are called excretory organs. www.sblifescience.in

3 NITROGENOUS WASTES Ammonia, urea and uric acid are the major forms of nitrogenous wastes excreted by the animals. www.sblifescience.in 4 NITROGENOUS WASTES

Ammonia is the most toxic form and requires large amount of water for its elimination, Uric acid is the least toxic, can be removed with a minimum loss of water. www.sblifescience.in 5 AMMONOTELISM The

process of excreting ammonia is Ammonotelism . Many bony fishes, aquatic amphibians and aquatic insects are ammonotelic in nature. www.sblifescience.in 6 AMMONOTELISM Ammonia,

as it is readily soluble, is generally excreted by diffusion across body surfaces or through gill surfaces (in fish) as ammonium ions. www.sblifescience.in 7 UREOTELISM Mammals, many

terrestrial amphibians and marine fishes mainly excrete urea and are called ureotelic animals. www.sblifescience.in 8 UREOTELISM Ammonia produced by metabolism is converted into urea in the liver

of ureotelic animals and released into the blood which is filtered and excreted out by the kidneys. www.sblifescience.in 9 URICOTELISM Reptiles, birds, land snails and insects excrete nitrogenous

wastes as uric acid in the form of pellet or paste with a minimum loss of water and are called uricotelic animals. www.sblifescience.in 10 NITROGEN EXCRETION 1 Ammonotelism

The process of excreting ammonia Many bony fishes, aquatic amphibians and aquatic insects 2 Ureotelism The process of excreting urea Mammals, many terrestrial amphibians and marine fishes

3 Ureotelism Excretion of nitrogenous wastes as uric acid in the form of pellet or paste with a minimum loss of water Reptiles, birds, land snails and insects www.sblifescience.in 11

NITROGEN EXCRETION www.sblifescience.in 12 NITROGEN EXCRETION www.sblifescience.in 13 EXCRETORY STRUCTURES Protonephridia or flame cells are the excretory structures in

Platyhelminthes (Flatworms, e.g., Planaria), rotifers, some annelids and the cephalochordate Amphioxus. Protonephridia are primarily concerned with ionic and fluid volume regulation, i.e., osmoregulation www.sblifescience.in 14 EXCRETORY STRUCTURES

Nephridia are the tubular excretory structures of earthworms and other annelids. Nephridia help to remove nitrogenous wastes and maintain a fluid and ionic balance. www.sblifescience.in 15

EXCRETORY STRUCTURES Malpighian tubules are the excretory structures of most of the insects (Eg: cockroaches) Malpighian tubules help in the removal of nitrogenous wastes and osmoregulation. www.sblifescience.in 16 EXCRETORY STRUCTURES

Antennal glands or green glands perform the excretory function in crustaceans like prawns. www.sblifescience.in 17 EXCRETORY STRUCTURES KIDNEY www.sblifescience.in 18

EXCRETORY ORGANS EXCRETORY ORGANS ANIMAL GROUP 1 Protonephridia or flame cells Platyhelminthes (Flatworms, e.g., Planaria), rotifers, some annelids and the cephalochordate Amphioxus. 2 Nephridia earthworms and other annelids.

3 Malpighian tubules Most of the insects (Eg: cockroaches) 4 Antennal glands or green glands Crustaceans like Prawns. 5 kidney

Fishes / Amphibians / Reptiles / Birds / Mammals www.sblifescience.in 19

Recently Viewed Presentations

  • Design Science and Critical Realism Some Methodological Issue

    Design Science and Critical Realism Some Methodological Issue

    Design Science and Critical Realism Some Methodological Issue Greg Hill, Monash University CBIDSR Workshop, 20/10/05 Overview Historical Development and Rationale Structure of Design Science Research Evaluation in Design Science Guidelines for Assessment Overview Philosophy of Design Science Research Ideas from...
  • Perkembangan Teori Komunikasi Massa - UPJ

    Perkembangan Teori Komunikasi Massa - UPJ

    Dimotori oleh Herbert Blumer dan Geoge Herbet Mead. Menekankan pentingnya pengamat peserta dalam studi komunikasi sebagai cara mengeksplorasi berbagai hubungan sosial. Teori konstruksi sosial. ... Dipelopori oleh Katz, Blumler & Gurevitch.
  • Function approximation: Fourier, Chebyshev, Lagrange Orthogonal functions Fourier

    Function approximation: Fourier, Chebyshev, Lagrange Orthogonal functions Fourier

    Orthogonal functions Fourier Series Discrete Fourier Series Fourier Transform: properties Chebyshev polynomials Convolution DFT and FFT Scope: Understanding where the Fourier Transform comes from. Moving from the continuous to the discrete world. The concepts are the basis for pseudospectral ...
  • NetWorker Profile

    NetWorker Profile

    Environmental Topology. Save Set by Capacity Capacity Other SQL VDI Unix Filesystems Windows Filesystems 1416.14 1247.21 3369.64 7898.58 1065.3499999999999 OS Distribution (GB) Series 1 Other
  • Snowmass Presentation - Jussieu

    Snowmass Presentation - Jussieu

    3. Erosion (direct and indirect morphological change) Land use planning, Managed realignment/ forbid hard defences, Nourishment/ sediment management. 2. Wetland loss (and change) b. Backwater effect (river) Dikes/surge barriers, Building codes/floodwise buildings, Land use planning/hazard delineation. a. Surge (sea) 1.
  • The Elves and the Shoemaker

    The Elves and the Shoemaker

    The Elves and the Shoemaker Unit 2 - Kindness Story 2 By Mrs. Nailon leather Material made from animal skin polished Made smooth and shiny handsome Good looking cobbler Someone who makes and repairs shoes Synonym- shoemaker Top hat and...
  • Context Clues: are hints that the author gives

    Context Clues: are hints that the author gives

    Context Clues: are hints that the author gives to help define a difficult or unusual word. The clue may appear within the same sentence as the word to which it refers, or it may follow in the next sentence. Because...
  • Creative Music Project: An analysis of fifth grade student ...

    Creative Music Project: An analysis of fifth grade student ...

    Creative Music Project: An analysis of fifth grade student compositions Scott D. Lipscomb,1 Maud Hickey,1 David Sebald,2 & Donald Hodges2 1Northwestern University 2The University of Texas at San Antonio