(Botany) an association of a fungus and a plant in which the fungus lives within or on the outside of the plant's roots forming a symbiotic or parasitic relationship. See ectotrophic mycorrhiza, endotrophic mycorrhiza. [C19: from myco- + Greek rhiza root]
Medical Definition of POSTERIOR MEDIAN SULCUS. : a shallow groove along the midline of the posterior part of the spinal cord that separates the two posterior funiculi and is the external boundary of the posterior median septum. a shallow groove along the midline of the posterior part of the spinal cord that separates the two posterior funiculi and is the external boundary of the posterior median septum.
Beam:angle 5Â°-10Â° toward the elbow, central beam directed at the shoulder joint. Many alternative postions for similar xray, can be supine etc. Supraspinatus Outlet view Shoulder Xray. Demonstrates: outlet/impingement of the supraspinatus and coracoacromial arch.