Anatomy and Cell Biology 3309 Lecture Notes - Lecture 5: Bulbous Corpuscle, Lamellar Corpuscle, Stratum Granulosum
29 Apr 2021
School
Department
Professor
Document Summary
Motor nerves to vessels, glands, and arrestor pili muscles (make hair stand up) Lack a connective tissue or schwann cell incasement. They are unspecialized - can respond to different senses (pain and temperature) *for more detailed info look at skin lecture. Very large - larger and fewer than meissner"s. Onion appearance - oval, apx 1 mm in length. Single afferent unmyelinated nerve ending in the centre of a corpuscle. Composed of a myelinated nerve ending, surrounded by a capsulated structure. When the nerve enters the capsule, the essential nerve fibre is unmyelinated. The unmyelinated portion is covered by a series of tightly packed, flattened, schwann cell lamellae that form the inner core of the corpuscle. The outer layer/core is formed by a series of concentric lamellae - each one is separated by its neighbour by a narrow space which is full of lymph-like fluid. This space may contain collagen fibrils and capillaries.
