What are the primary excretory organs of crustaceans and accessory organs?

What are the primary excretory organs of crustaceans and accessory organs?

The antennal and maxillary glands constitute the principal crustacean excretory organs, which have received less attention in functional studies.

What is the excretory organ of Mollusca?

Mollusks have a coelom and a complete digestive system. Their excretory system consists of tube-shaped organs called nephridia (see Figure above). The organs filter waste from body fluids and release the waste into the coelom.

Which of the following is excretory organ of aquatic crustaceans?

The antennal gland is an excretory organ in crustaceans, although its functions differ among species (Holliday and Miller, 1984; Freire et al., 2008).

What is the excretory organs of crustaceans are called Antennary or maxillary?

Coxal gland In many higher crustaceans the excretory glands are located in the head. They are called antennal glands or maxillary glands, depending on whether they open at the base of the antennae or at the maxillae.

What is the excretory organ of rotifers?

The excretory system consists of ciliated cells, called flame cells, that move collected liquids into two coiled tubes called protonephridia; these tubes open into a contractile bladder.

What is the excretory organ of protozoa?

Protozoans : Protozoans have no excretory organs. The metabolic waste products i.e. ammonia is passed out by diffusion through the cell membrane in surrounding water. They carry out the process of excretion with the help of contractile vacuoles.

Which is excretory organ in crustaceans like prawns?

green glands
The main excretory organs of prawn are paired green glands. They are located within the second antennae which are the second pair of appendages, attached to the anterior part of the body. Each green gland consists of on endsac, labyrinth and a bladder.

What is the excretory organ in prawn?

In which of the organisms Antennary glands are found as excretory organ?

Lower animals remove their waste products from their body surface. Antennary glands are opaque-white, pea-sized structures present in the coxa of each second antenna. they are also called ‘Green glands’. These are osmoregulatory organs of Crustaceans like Prawn, Crayfish, Palaemon and many more.

How do rotifers excrete?

Rotifers obtain food that is directed toward the mouth by the current created from the movement of the corona. Food then passes by digestive and salivary glands, and into the stomach, then onto the intestines. Digestive and excretory wastes are collected in a cloacal bladder before being released out the anus.

Which is not a excretory structure in Arthropoda?

Metanephridia is not an excretory organ of Arthropoda.

What kind of excretory organs does a crustacean have?

Two different excretory organs are found among crustaceans: the antennal gland and the maxillary gland. Both have the same basic structure: an end sac and a convoluted duct that may expand into a bladder before opening to the outside. In most adult crustaceans only one or the other gland functions.

Where are the green glands located in a crustacean?

Crustaceans Green glands are excretory organs of crustaceans. They are also called antennal glands because these glands are located near the base of larger antennae. Each gland has three parts end sac, labyrinth and bladder.

Is the end sac of a crustacean the same as the bladder?

Both have the same basic structure: an end sac and a convoluted duct that may expand into a bladder before opening to the outside. In most adult crustaceans only one or the other gland functions. The functional gland may change during the life cycle. The antennal and maxillary glands primarily regulate ionic balance.

What is the function of the maxillary gland in crustaceans?

In most adult crustaceans only one or the other gland functions. The functional gland may change during the life cycle. The antennal and maxillary glands primarily regulate ionic balance. The total balance of salts and water is also controlled in part by the gut, which can absorb both.

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