Lanceolate Endings is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Lanceolate endings are rapidly adapting mechanoreceptors found in hair follicles. They consist of flattened, lance-shaped nerve endings that wrap around the hair follicle shaft. They detect hair movement and are sensitive to light touch.
- Location: Hair follicle outer root sheath
- Terminal shape: Flattened, lance-like expansions
- Innervation: Rapidly adapting Aβ mechanoreceptive fibers
- Distribution: Throughout hairy skin, especially in hair-rich areas
- Light touch detection: Sense gentle stroking of the skin
- Air movement sensing: Detect airflow across skin surface
- Hair movement detection: Respond to hair shaft deflection
- Rapid adaptation: Quickly respond to changing stimuli
- Predator detection: Part of defensive touch reflexes
- Hair follicle receptors affected in small fiber neuropathy
- Light touch deficits common in diabetic neuropathy
- May contribute to tactile hypersensitivity
- Declines with age, contributing to reduced light touch
- Touch testing: Assessment of light touch sensation
- Neurological examination: Part of sensory testing
- Hair follicle biopsy: Used in small fiber neuropathy diagnosis
The study of Lanceolate Endings has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
- Iggo A, Muir AR. The structure and function of a slowly adapting touch corpuscle in hairy skin. Proc R Soc B. 1969.
- Johnson KO, Yoshioka T, Vega-Bermudez F. Tactile functions of mechanoreceptive afferents. Exp Brain Res. 2000.
- Halata Z. The mechanoreceptors of the mammalian skin. Adv Anat Embryol Cell Biol. 1975.