The cervical plexus is a plexus of the ventral roots of the first four cervical spinal nerves which are located from C1 to C4 cervical segment near the neck.They are located laterally of the transverse processes between prevertebral mucles from the medial side and vertebral(m.scalenus,m.levator scapulae,m.splenius cervicis) from lateral side.Here there is anastomosis with n.accessorius, n.hypoglossus and sympathetic trunk. It is located in the neck, deep to sternocleidomastoid. Nerves formed from the cervical plexus innervate the back of the head, as well as some neck muscles. PLEXUS (Physics Learning EXperience Using Software) is a name of project that was started by Vibor Cipan, physics student form Croatia and it is based on utilization of usage of computer technology to enhance learning of physics. ... The term spinal nerve generally refers to the mixed spinal nerve, which is formed from the dorsal and ventral roots that come out of the spinal cord. ... The neck is the part of the body on many limbed vertebrates that distinguishes the head from the torso or trunk. ... In human anatomy, the sternocleidomastoid muscles are muscles in the neck that acts to flex and rotate the head. ...
In the posterior triangle, the brachial plexus is found in the angle between the posterior border of the sternomastoid and the clavicle, where it can be "blocked" by injection of a local anesthetic, thereby rendering insensitive all the deep structures of the upper limb and the skin distal to the middle of the arm.
The cervicalplexus (see table 50-5) is situated deeply in the upper part of the neck, under cover of the internal jugular vein and the sternomastoid.
The ansa cervicalis is a loop on or in the carotid sheath.
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