SPLENIUS
\splˈiːnɪəs], \splˈiːnɪəs], \s_p_l_ˈiː_n_ɪ__ə_s]\
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By William R. Warner
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So called from its resemblance to the spleen of certain animals. A muscle situate at the posterior part of the neck, and upper part of the back. It is much broader above than below, where it terminates in a point. It is attached, by its inner edge, to the spinous processes of the first five dorsal vertebrae; to that of the 7th cervical, and to the inferior part of the posterior cervical ligament. By its upper extremity, it is attached to the transverse processes of the first two cervical vertebrae, to the mastoid process, and to the posterior surface of the occipital bone. Some have considered this muscle to be formed of two portions, which they have ealled Splenitis colli, and Splenius cap’itis. The splenius extends the head, inclines it, and rotates it. If the splenii of each side act together, they extend the head.
By Robley Dunglison
Word of the day
Procollagen Proline Dioxygenase
- mixed-function oxygenase that catalyzes hydroxylation prolyl-glycyl-containing-peptide, usually in protocollagen, hydroxyprolylglycyl-peptide. The enzyme utilizes molecular oxygen with a concomitant oxidative decarboxylation of 2-oxoglutarate to succinate. EC 1.14.11.2.