Changes

==Structure==

==Structure==

[[Image:WIKIVETperipheralnervestructure.jpg|thumb|right|150px|Peripheral Nerve Structure. Sophie Stenner, RVC 2008]]

[[Image:WIKIVETperipheralnervestructure.jpg|thumb|right|150px|Peripheral Nerve Structure. Sophie Stenner, RVC 2008]]

*Nerve fibres reside in a connective tissue matrix called the '''endoneurium''' and are gathered together into bundles or fascicles defined by a second connective tissue layer called the '''perineurium'''.  

Nerve fibres reside in a connective tissue matrix called the '''endoneurium''' and are gathered together into bundles or fascicles defined by a second connective tissue layer called the '''perineurium'''. Groups of fascicles are then gathered together in a third connective tissue layer called the '''epineurium'''. Thus, peripheral nerves have a '''three-tiered hierarchical arrangement of connective tissue'''. '''Renaut bodies''' are loose, cigar-shaped whorls of extracellular matrix within fascicles. They are common in [[Equine Alimentary System  - Anatomy & Physiology|equine]] nerves and may also occur in human and rat peripheral nerves at points of stress or compression.

*Groups of fascicles are then gathered together in a third connective tissue layer called the '''epineurium'''.  

*Thus, peripheral nerves have a '''three-tiered hierarchical arrangement of connective tissue'''.

*Renaut bodies are loose, cigar-shaped whorls of extracellular matrix within fascicles. They are common in [[Equine Alimentary System  - Anatomy & Physiology|horse]] nerves and may also occur in human and rat peripheral nerves at points of stress or compression.

==Nerve Fibre==

==Nerve Fibre==