SACROLUMBAR
\sˈakɹəlˌʌmbɑː], \sˈakɹəlˌʌmbɑː], \s_ˈa_k_ɹ_ə_l_ˌʌ_m_b_ɑː]\
Sort: Oldest first
By Henderson, I. F.; Henderson, W. D.
By J.H. Kenneth
-
That which belongs to the sacrum and loins.
-
is seated at the posterior part of the trunk; is thick and triangular below; flat and thin in the remainder, and terminates in a point at its upper extremity. It is attached to the posterior surface of the sacrum; to the corresponding portion of the crista ilii; to the extremities of the transverse processes of the lumbar vertebrae; to the angles of the eleven inferior ribs; to the tuberosity of the first, and the posterior tubercle of the transverse processes of the last five cervical vertebrae. The sacro-lumbalis straightens the vertebral column when bent forwards, and maintains it straight. By means of its insertion into the ribs, it can elevate or depress these bones, according as it contracts from above to below, or from below to above. It acts, consequently, sometimes as an inspiratory, at others as an expiratory muscle. From six or eight of the lower ribs arises an equal number of fleshy portions, which terminate at the inner side of this muscle, and are called Musculi Accessorii seu Additamentum ad SacroIumbalem, (F.) Accessoireis du Sacro-lombaire. From the upper part of the sacro-lumbalis, a fleshy slip, called Cervicalis descendens, Cervicalis descendens Diemerbroeckii, Transversalis collateralis colli, Accessorius ad Sacro-lumbalem, (F.) Transversaire grele, runs up, to be fixed to the transverse processes of the fourth, fifth, and sixth cervical vertebrae, by three distinct tendons. These last parts, though separated by some anatomists, belong to the sacro-lumbalis.
By Robley Dunglison
Word of the day
Dopamine Acetyltransferase
- An enzyme that catalyzes the of groups from acetyl-CoA to arylamines. They have wide specificity for aromatic amines, particularly serotonin, and can also catalyze acetyl transfer between arylamines without CoA. EC 2.3.1.5.