Cervical stenosis is a narrowing of the spinal canal which protects the spinal cord.atients who present with symptoms suggestive of cervical stenosis are usually worked up with a neurological evaluation and a CT scan or MRI scan. An MRI scan is particularly good at evaluating the spinal canal, the spinal cord and the nerves coming and going from the spine.
The ribosome itself is highly complex. It is made up of dozens of distinct proteins (the exact number varies a little bit between species) as well as a few specialized RNA molecules known as ribosomal RNA (rRNA). Note â these rRNAs do not carry instructions to make specific proteins like mRNAs.
They are complexes of proteins and three (prokaryotes) or four (eukaryotes) rRNA molecules called subunits. The main function of ribosomes is as the site of mRNA translation; once the two subunits are joined by the mRNA from the nucleus, the ribosome translates mRNA into a specific sequence of amino acids.There are two types of Ribosomes: free and bound.he main function of ribosomes is as the site of mRNA translation; once the two subunits are joined by the mRNA from the nucleus, the ribosome translates mRNA into a specific sequence of amino acids.