CHOANOCYTES Meaning and
Definition
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Choanocytes are specialized cells that are found in sponges, which are multicellular, aquatic animals belonging to the phylum Porifera. Also known as collar cells, choanocytes play crucial roles in different aspects of a sponge's physiology and function.
The main function of choanocytes is to generate and maintain water flow within the sponge body. They have a distinctive structure, characterized by a cylindrical cell body with a single flagellum projecting outward from one end, surrounded by a collar composed of microvilli or microtentacles. This structure resembles a miniature funnel or chimney, hence the name "choanocyte," which means "funnel cell."
The beating action of the flagellum creates water currents that flow through the sponge's body. These currents serve to bring in food particles, oxygen, and other necessary substances, while also removing waste materials from the sponge. The microvilli on the collar of the choanocytes trap food particles, such as bacteria and tiny organic matter, allowing the sponge to filter-feed and obtain nutrients through a process known as phagocytosis.
Choanocytes also have other physiological functions. They are involved in the reproduction of sponges, as they can give rise to specialized cells responsible for producing eggs or sperm. Additionally, they are responsible for maintaining the intricate structure of the sponge body by producing collagen and other extracellular matrix components.
Overall, choanocytes are integral to the survival and functioning of sponges, contributing to their feeding, reproduction, and structural integrity.
Common Misspellings for CHOANOCYTES
Etymology of CHOANOCYTES
The word "choanocytes" is derived from the combination of two roots: "choano-" and "-cytes".
The root "choano-" is derived from the Greek word "khoanē" which means "funnel" or "funnel-shaped". It is often used in biological terms to refer to structures that resemble a funnel.
The suffix "-cytes" is derived from the Greek word "kytos" which means "cell". It is often used in biological terms to refer to different types of cells within an organism.
Therefore, "choanocytes" is formed by combining the root "choano-" indicating the funnel shape, and the suffix "-cytes" denoting cells. In the context of biology, "choanocytes" refers to the specialized cells found in sponges, which have a funnel-shaped structure and function in various physiological processes.
