Is the nerve a connective tissue
from Latin: nervus - tendon, nerve
As nerve is an anatomical structure that serves to conduct the excitation. A nerve consists of a multitude of bundled nerve fibers and the connective tissue that surrounds them.
Nerves are usually systematically named after their main structure (e.g. ulnar nerve) or their supply area (e.g. medial cutaneous nerve, facial nerve), but sometimes also according to anatomical features (e.g. vagus nerve). As they run through the body, they branch out and release fiber bundles to neighboring structures, which are also addressed as a distinct nerve (nerve) or as a branch (ramus). Branches that create fiber connections between two neighboring nerves are called rami communicantes or nerve anastomoses.
In the area of the origins of the extremities, nerves also exchange fibers to a greater extent, thereby forming plexuses (plexuses).
Nerves can be further differentiated histologically. The connective tissue involved in the structure of the nerve is divided into 3 zones:
The endoneurium is the loose connective tissue that surrounds the Schwann cells of the individual nerve fibers. It contains numerous small blood and lymph vessels that feed the Schwann cells and thus also the nerve fibers they encase. Free cells (e.g. macrophages) are also found occasionally.
The perineurium is a tight connective tissue that combines many individual nerve fibers into common bundles, the so-called fascicles. It supports and subdivides ("septate") the nerve - comparable to the plastic core of a multi-core cable. The connective tissue cells are in close, epithelial-like contact with one another and are connected to one another by so-called tight junctions.
The epineurium surrounds the nerve together with the larger vessels supplying it to the outside. It is a connective tissue with numerous collagen fibers, to which an additional "shifting layer" of loose connective tissue or fatty tissue, the so-called mesoneurium, can be attached.
4.1 ... according to function
According to the function of the fiber qualities running in them, a distinction is made:
4.2 ... according to topography
A distinction is made according to their origin:
The inflammation of a nerve is called neuritis. Depending on the number of nerves affected, a distinction is made:
- Would you buy fewer cars for a driver?
- Where can I play online
- Is the Roswell Rock real?
- Modi is the greatest leader in India
- What are the effects of hearing loss
- What are the disadvantages of addiction injection
- What foods lower cholesterol
- Why are semicolons tested on the SAT
- Why is carbon dioxide necessary for photosynthesis
- How can I tolerate sensors
- Disrupt collars of cats
- When are updates available via apt get
- Everyone lives a guilty life
- Which is the best forex strategy
- Who is this young radio bass player
- Where do you find the periplasmic space
- There has always been life on earth
- What is the Brunner theory
- When should I use Elasticsearch in Java
- What are some well-written Naruto fanfiction
- Value investing is out of date today
- Is God in heaven above or everywhere
- How did cats become such efficient predators?
- Can we control who we dream of?