PACINIAN CORPUSCLES Meaning and
Definition
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Pacinian corpuscles, also known as lamellated corpuscles, are specialized sensory receptors found in the skin and other tissues of vertebrates. These corpuscles are responsible for detecting mechanical pressure and vibration stimuli.
The structure of Pacinian corpuscles is characterized by concentric layers of connective tissue encapsulating nerve fibers. They consist of a central nerve fiber surrounded by multiple layers of flat connective tissue cells called lamellae. These lamellae are separated by fluid-filled spaces. The corpuscle is enclosed within a connective tissue capsule.
When pressure or vibration is applied to the area surrounding the Pacinian corpuscles, the tissue deforms, causing the lamellae to change shape. This mechanical deformation leads to the compression of the nerve fiber at the center of the corpuscle. As a result, action potentials are generated and transmitted to the central nervous system, signaling the presence of the stimulus.
Pacinian corpuscles are particularly sensitive to high-frequency vibrations and sudden changes in pressure. They are most abundant in areas of the body that require a high degree of sensitivity, such as the fingertips and soles of the feet. The information provided by Pacinian corpuscles allows the body to detect and respond to tactile sensations, detecting objects, textures, and variations in pressure, enhancing our sense of touch and enabling fine motor coordination.
Common Misspellings for PACINIAN CORPUSCLES
- oacinian corpuscles
- lacinian corpuscles
- -acinian corpuscles
- 0acinian corpuscles
- pzcinian corpuscles
- pscinian corpuscles
- pwcinian corpuscles
- pqcinian corpuscles
- paxinian corpuscles
- pavinian corpuscles
- pafinian corpuscles
- padinian corpuscles
- pacunian corpuscles
- pacjnian corpuscles
- packnian corpuscles
- paconian corpuscles
- pac9nian corpuscles
- pac8nian corpuscles
- pacibian corpuscles
- pacimian corpuscles
Etymology of PACINIAN CORPUSCLES
The term "Pacinian corpuscles" is named after its discoverer, Italian anatomist Filippo Pacini. Filippo Pacini, also known as Filippo Pacini-Taddei, was born in 1812 and died in 1883. He was a prominent physician and anatomist who made several important contributions to the field of medical science. In 1831, Pacini first described and identified the corpuscles, which are a type of sensory receptor found in various tissues of the body, including the skin, connective tissue, and internal organs. These receptors are responsible for detecting sensations of pressure and vibration. Due to their initial discovery and subsequent extensive research by Pacini, these sensory receptors came to be known as "Pacinian corpuscles" or "Pacinian bodies" as a tribute to his pioneering work in their identification and understanding.
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