Excretory System In Invertebrates New 26304c

Group 6: Bella Rhea Lavifa Sanjaya (120210153038)

Sakalus Wepe

(120210153046)

Henik Anjayati

(120210153058)

EXCRETION SYSTEM OF INVERTEBRATA Excretory system in invertebrates different with the excretory system in vertebrates. Invertebrates do not have a perfect kidney structured as in vertebrates. In general, invertebrates have a very simple excretory system, and this system is different between each other invertebrate invertebrates.

Porifera

Porifera has a very simple method that utilizes a water flow system to get rid of its useless waste materials. This process involves the diffusion of waste products particularly ammonia into cells and archeocytes transporting waste particles through the mesophyll and into the outgoing water current to prevent a blockage of the Ostia and release waste particles into the environment.

COELENTERATA

Coelenterata In coelentrata oxygen consumption and carbon dioxide production was done by the entire body surface by diffusion

Similarly expenditure to metabolic wastes carried by diffusion through the entire body surface Mouth and swallowing function for removing food waste because coelentrata not have anus

when cells produce water, metabolic waste produced following

• Cnidarians do excretion by diffusion from the cells into the epidermis and then out of the body. • In marine cnidarians, the osmotic pressure of his body by sea water. Having a permeable body surface sea water so that the osmotic pressure of body fluids go up or down depending on changes in seawater salinity.

• Invertebrate sea water has a very limited ability to salinity changes if exposed to low salt levels will soon die so confined to a particular place.

Echinodermata

there are no set excretory organs so echinoderms maintain homeostasis by excreting waste through the anus and absorbing nutrients to restore what was lost.

Because echinoderms do not have kidneys their waste is removed through diffusion from the fluid in the coelom and the water vascular system.

The rest of the results of metabolic and excretory trash will be taken or transported by amoebosit cells in the coelomic fluid and diffusion will be thrown out of the body through dermal branchia. Intestine and cecum tube feet can also function as an organ of excretion. In the intestine, there are two branches brown brownish liquid secreting

PLATYHELMINTHES  excretory system is done through the vessel branches extending to the side of the left and right along the body

 Each branch ends in cells fire (solenosit) equipped with cilia (hairs vibrate)  This channel is called protonefridium

 Fire-cell function as a means of excretion, ie throw trash substances which are metabolic waste nitrogen substances and also as a means of osmoregulation in the sense of helping issued access water buildup in the body so that the value of osmosis body can still retained a normal size

 In the cell there is a fire protonefridium equipped with a flagellum  each cell has several flagella fire that movements such as the movement of the flame  Water and some residual substances drawn into the cell fire  Silia movement also serves to regulate the flow of water into the cell and move along the line of fire on the excretion

 Cilia in each cell will fire always moving. As a result of the movement of the cilia, water or body fluids and waste products that have been screened in the cell will fire pushed into the excretory duct. Of channel excretion, body fluids and waste products are then removed through a hole dri body called nefridiofor.

 metabolic waste to be removed through an opening called nefridiopori  When cilia on nefrostom vibrate, body fluids from adjacent segments will flow into the nephridium

 In this nefridum, useful substances such as glucose and ions are absorbed by the blood to flow through the capillaries  While the residual substances such as water, nitrogen compounds, and salt useless by the body removed through nefridiopori.

NEMATHELMINTHES

Have an H-shaped The extracellular sinus formed by the excretory duct cell and the pore cell.

Renette Cells

 Have excretory ducts that permit them to conserve H20 and live on land  Unique excretory system of collecting tubules or renette cells (excretory glands)  Nitrogenous waste is excreted in the form of ammonia through the body wall

 Ammonia, urea, or uric acid  Ammonia, urea, or uric acid

Annelida  Metanefridia an organ expenditures which have holes / ciliated funnel and channel with the open end toward the hollow body cavity (called nefridiostom / nefrostom)

 At the time the body fluid to flow through the absorption nephridium back substances still useful as glucose, water, and ions. Then these substances distributed throughout the capillary circulation system. While the rest of the body fluids such as water, nitrogen compounds, and salts that are not needed by the body to be removed through nefridiofor

Osmoregulation of molusc

In the body keoang / Snails have fleshy body surface very permeable to water. when removed from its shell, then the water will be lost secepar evaporation of water on the surface area of the body.

Tolerance to water is very high. Osmotic pressure of the internal fluid varies widely depending on the water content of the environment. To avoid excessive water loss, slugs or snails are more active at night and when the dry growing conditions, keoang will shelter to immerse themselves into the ground and covered with a sort of operculum shell derived from the issuance of mucus.

Arthropoda.........

Malpighian Tubules  Insects and other terrestrial arthropods have organs called Malpighian tubules that remove nitrogenous wastes and also function in osmoregulation (Figure 44.13).

explanation.... The Malpighian tubules extend from deadend tips immersed in hemolymph (circulatory fluid) to openings into the digestive tract. The filtration step common to other excretory systems is absent Instead, the transport epithelium that lines the tubules secretes certain solutes, including nitrogenous wastes, from the hemolymph into the lumen of the tubule.

 Water follows the solutes into the tubule by osmosis, and the fluid then es into the rectum. There, most solutes are pumped back into the hemolymph. and water reabsorption by osmosis follows.

 The nitrogenous wastes mainly insoluble uric acid are eliminated as nearly dry matter along with the feces. Capable of conserving water very effectively, the insect excretory system is a key adaptation contributing to these animals' tremendous success on land.

Osmoregulation of arthropoda

 Water loss in insects mainly occurs through the process of evaporation. This is because insects have a body surface area ratio with his future at 50x, compared with mammals that have a body surface area ratio of the time the body was only 1 / 2x.

 Maya: perbedaan osmoregulasi di air tawar sama d air laut?  Firda : echino : bagaimana jika salinitas lingk terlalu tinggi ? Kan dia ga punya alat osmoregulasi?  Naning : eksresi & osmoregulasi pada metamorpfosis kupu-kupu  Siska : osmoregulasi pada udang?  Raras : Iapakah keong punya kelenjar sendiri di saluran eksresinya? Kan katanya tadi klo di kasih garam keluar lendir