In this diagram of a duplicated chromosome, (2) identifies the centromereâthe region that joins the two sister chromatids, or each half of the chromosome. In prophase of mitosis, specialized regions on centromeres called kinetochores attach chromosomes to spindle fibers. The centromere is the part of a chromosome that links sister chromatids or a dyad. During mitosis, spindle fibers attach to the centromere via the kinetochore. Centromeres were first thought to be genetic loci that direct the behavior of chromosomes.
Carotid Artery Pain in Left Side of Neck. The carotid artery pain in left side of neck means (if this is the case) that there may be carotid artery disease which is when the arteries that supply the brain (its front) with oxygenated blood, get narrowed.hen the carotid arteries get dilated or distended the carotidynia occurs. It has 3 types: classic, migrainous and arteriosclerotic, and all of them lead to pain in left side of neck, as well as to face, head or ear pain.
My recurrant upper FRONT neck pain has been going on for years. Now it seems to go together with pain in the back of my neck mostly left side. I get an aching feeling on the left upper neck I guess where their could by lymph node or the caratid artery.When I mention neck pain to my Dr. he's always focussing on my anxiety and talking about meds. He does feel the area.ith the jaw clenching i clench my left side more then my right, why who knows i just do. and its obvious on my full face xray as to which side the jaw joint is more worn. so it can be the case. i get tension on the left side of neck and down the front of my neck and under my chin.