Excretory organs in invertebrates

Excretory organs
in invertebrates
Dr. Shampa Jain
Professor
Department of Zoology & Biotechnology Govt. M.H. College
of Home Science & Science for Women, Autonomous,
Jabalpur, M.P. India

Excretory organs in
invertebrates
 Contrectile vacuoles
 Protonephredia
 Metanephredia
 Coelomoduct and Nephromixia
 Coxal glands
 Malpighian tubules
 Organ of Bojanus

PROTONEPHRIDIA
 Protonephridia
of Fasciola

Solencytes
Solen – A channel, cyte- cell

METANEPHRIDIA
In Pheretima three types
of nephridia found their
location in body .
Pharyngeal nephridia
Integumentary nephridia
Septal nephridia

Excretory organs in invertebrates

TYPES OF
METANEPHRIDIA
Exo and Enteronephridia
Micro and Meganephridia

coelomoducts
 Coelomoducts are normally wide tubes of
mesodermal origin.
 Coelomoducts opens to the exterior by a
genital pore and into coelome by a relatively
large ciliated funnel called celomostomes.
 Coelomoducts primarily function as Gonoducts
and are confined to only a few reproductive
segments.
 In some forms coelomoducts may secondarily
function as excretory organ.
 The uriniferous tubules of vertebrate kidney
are coelomoducts.

NEPHROMIXIA
Protonephromixium
Metanephromixium
Mixonephridium

 COXAL & ANTENNARY
GLAND OF PRAWN

 POSITION OF MALPIGHIAN
TUBULES

A MALPIGHIAN TUBULES
OF COCKROACH

Excretory organs in invertebrates

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Excretory organs in invertebrates