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Spinal muscular atrophy (SMA) is a rare neuromuscular disorder that results in the loss of motor neurons and progressive muscle wasting. [3] [4] [5] It is usually diagnosed in infancy or early childhood and if left untreated it is the most common genetic cause of infant death. [6]
Spinal muscular atrophies (SMAs) are a genetically and clinically heterogeneous group of rare debilitating disorders characterised by the degeneration of lower motor neurons (neuronal cells situated in the anterior horn of the spinal cord) and subsequent atrophy (wasting) of various muscle groups in the body. [1]
SMA syndrome can present in two forms: chronic/congenital or acute/induced. [citation needed] Patients with the chronic, congenital form of SMA syndrome predominantly have a lengthy or even lifelong history of abdominal complaints with intermittent exacerbations depending on the degree of duodenal compression.
In human anatomy, the superior mesenteric artery (SMA) is an artery which arises from the anterior surface of the abdominal aorta, just inferior to the origin of the celiac trunk, and supplies blood to the intestine from the lower part of the duodenum through two-thirds of the transverse colon, as well as the pancreas.
Emergency medical services: EMT: Emergency medical technician: EMT-B: Emergency Medical Technician - Basic(OLD) EMT-I: Emergency Medical Technician - Intermediate (OLD) EMT-P: Emergency Medical Technician - Paramedic (OLD) EN: Enrolled nurse (AU) – See Licensed practical nurse: EORTC: European Organization for Research Treatment in Cancer EpSSG
Pronunciation follows convention outside the medical field, in which acronyms are generally pronounced as if they were a word (JAMA, SIDS), initialisms are generally pronounced as individual letters (DNA, SSRI), and abbreviations generally use the expansion (soln. = "solution", sup. = "superior").
The supplementary motor area (SMA) is a part of the motor cortex of primates that contributes to the control of movement. It is located on the midline surface of the hemisphere just in front of (anterior to) the primary motor cortex leg representation. In monkeys, the SMA contains a rough map of the body. In humans, the body map is not apparent.
SMA* (Simplified Memory-bounded Algorithm), a shortest path algorithm; SMA connector (SubMiniature version A), a coaxial RF connector; SMA 905 or F-SMA I, SMA 906 or F-SMA II, an optical fiber connector; SMA or DO-214AC, a variant of the DO-214 diode package; Surface-mount assembly, in electronics