UPPER TRUNKS Meaning and
Definition
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Upper trunks refer to the upper portion or division of the brachial plexus, a network of nerves located in the shoulder region of the body. The brachial plexus is formed by the merging of nerves from the cervical spine and extends into the upper limb to supply the muscles and sensation of the arm.
Specifically, the upper trunks of the brachial plexus are formed by the union of the anterior rami (branches) of the fifth and sixth cervical spinal nerves. These upper trunks pass through the interscalene triangle, a small space located between the anterior and middle scalene muscles in the neck.
The upper trunks subsequently give rise to the branches that innervate different muscles and provide sensory information to various regions of the upper limb. Some of the major branches arising from the upper trunks include the musculocutaneous nerve, the suprascapular nerve, and the lateral pectoral nerve. These nerves provide motor function to muscles such as the biceps brachii and deltoid, and sensory innervation to specific areas on the shoulder and arm.
In summary, the upper trunks are a crucial component of the brachial plexus, responsible for transmitting nerve signals and enabling motor and sensory function in the upper limb.
Common Misspellings for UPPER TRUNKS
- ypper trunks
- hpper trunks
- jpper trunks
- ipper trunks
- 8pper trunks
- 7pper trunks
- uoper trunks
- ulper trunks
- u-per trunks
- u0per trunks
- upoer trunks
- upler trunks
- up-er trunks
- up0er trunks
- uppwr trunks
- uppsr trunks
- uppdr trunks
- upprr trunks
- upp4r trunks
- upp3r trunks
Etymology of UPPER TRUNKS
The term "upper trunks" does not have a specific etymology as it seems to be a combination of two separate words. However, I can provide the etymology for each word individually:
- Upper: The word "upper" in English comes from the Old English word "uferra" which means "higher" or "above". It has roots in the Proto-Germanic word "ubilaz" which means "above" or "over".
- Trunks: This word has a more diverse etymology as it can refer to different objects. In the context of trees, "trunks" is derived from the Old French word "tronc" which means "stem" or "log". It can also have Latin roots, coming from the word "truncus", meaning "trunk" or "stock".
