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The mechanoreceptors are hair cells, the same mechanoreceptors for vestibular sense and hearing. Hair cells in fish are used to detect water movements around their bodies. These hair cells are embedded in a jelly-like protrusion called cupula.
Oblique view of a goldfish (Carassius auratus), showing pored scales of the lateral line system. The lateral line, also called the lateral line organ (LLO), is a system of sensory organs found in fish, used to detect movement, vibration, and pressure gradients in the surrounding water.
Detection of hydrodynamic stimuli in mammals typically occurs through use of hairs or “push-rod” mechanoreceptors, as in platypuses. When hairs are used, they are often in the form of whiskers and contain a follicle-sinus complex (F-SC), making them different from the hairs with which humans are most familiar. [21] [22] [23]
The fish lateral line consists of thousands of hair cells. [3] In fish, a neuromast is a fine hair-like structure that uses transduction of rate coding to transmit the directionality of the signal. [4] Each neuromast has a direction of maximum sensitivity providing directionality. [5]
A mechanoreceptor, also called mechanoceptor, is a sensory receptor that responds to mechanical pressure or distortion. Mechanoreceptors are located on sensory neurons that convert mechanical pressure into electrical signals that, in animals, are sent to the central nervous system .
In addition to the platypus and other monotremes, sharks, rays, bees, some fish, and dolphins can also detect electric fields. ... The Platypus also uses push-rod mechanoreceptors to be able to ...
The small fish Danionella cerebrum makes the loudest sound for its size of any fish, using muscles to tension a cartilage; this is released to strike the swim bladder. [10] Aquatic animals use mechanoreceptors to detect acoustic signals.
In terrestrial pulmonate gastropods, eye spots are present at the tips of the tentacles in the Stylommatophora or at the base of the tentacles in the Basommatophora.These eye spots range from simple ocelli that cannot project an image (simply distinguishing light and dark), to more complex pit and even lens eyes. [6]