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flagella
Spongocoel, literally 'sponge cavity'.
Water is brought through cilia-lined pores into the hollow cavity of the sponge. As water passes through the pores, the cilia trap oxygen to breathe
A flagellated cell that sweeps water through a sponge's body is called a choanocyte. Choanocytes have a flagellum that creates a current to bring water through the sponge's pores, allowing for filter feeding and gas exchange to occur within the sponge's body.
Water is moved through a sponge's central cavity, known as the spongocoel, by the action of specialized cells called choanocytes. These cells have flagella that beat rhythmically, creating a flow of water into the sponge through small openings called ostia. As water flows through the spongocoel, it is filtered for nutrients and oxygen, which are absorbed by the sponge's cells. The filtered water then exits through a larger opening called the osculum.
ostium
tiny "whips" on the cells inside a sponge draw water in through the pores of thesponge. Food is then removed from the water before it leaves through the opening at the top of the sponge .
Sponges have no proper body cavity or coelom. However, in the everyday sense of the expression, there is a cavity inside sponges, which is called a spongocoel.
The two sponge-like organs in the thoracic cavity are the lungs. They are responsible for the exchange of oxygen and carbon dioxide during the process of breathing. The lungs are located on either side of the heart within the chest cavity.
The sponges are Acoelomates. That is they don't have coelom or body cavity.
Choanocyte (collar cells) are any of the flagellated cells located in the body cavity of a sponge. They surround the base of the flagellum. The function of these cells is to maintain the flow of water through the body of the sponge.
Choanocyte (collar cells) are any of the flagellated cells located in the body cavity of a sponge. They surround the base of the flagellum. The function of these cells is to maintain the flow of water through the body of the sponge.