Myotome

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myotome

[′mī·ə‚tōm]
(anatomy)
A group of muscles innervated by a single spinal nerve.
(embryology)
The muscle plate that differentiates into myomeres.
(engineering)
An instrument used to divide a muscle.

Myotome

 

the rudimentary musculature in embryos of chor-date animals and man. The myotome is a paired metameric structure situated on the sides of the chorda and neural tube. It develops from the dorsal part of the internal wall of the somite.

References in periodicals archive ?
Of all the different lasers available, only one resulted in consistent positive patient responses including decreased pain, reduced edema, faster joint mobility restoration, and immediate increase in myotome strength: the Erchonia laser.
In patients with Guillain-Barre-like syndrome, voluntary motor unit potentials were preserved in tested myotomes.
In patients with poliomyelitislike syndrome undergoing electromyography studies, the absence of voluntary motor unit potentials was associated with lack of strength improvement in involved myotomes.
Lepidopsetta polyxystra is a species of Lepidopsetta with the following combination of characters in adults: total gill rakers on first arch 9-14, on upper arch 2-6; total gill rakers on second arch 8-14; supraorbital pores 1-3, rarely 4-7; preopercular pores 5-8; lateral-line pores 76-100; sum of scales above and below lateral line 66-96; interorbital wide; blind side coloration in life creamy, without glossy highlights along margins of myotomes.
This species of Lepidopsetta has the following combination of characters in adults: total gill rakers on first arch 6-11; on upper arch 1-3, rarely 4, with at least one rudimentary; total gill rakers on second arch 6-11; supraorbital pores 3-9; preopercular pores 5-7; lateral-line pores 70-91; sum of scales above and below lateral line 65-88; interorbital narrow; blind-side coloration white, with glossy highlights along myotome margins increasing anteriorly.
For example, a patient with a C5 incomplete injury may have decreased motor function in the lower cervical myotomes but may have lower extremity muscles that are all present, although weak.
The term myotome refers to the group of muscles innervated by a specific root.
All upper extremity peripheral nerves (motor components) and myotomes (C4-T1) were assessed during motor testing.
Electrodiagnostic studies showed denervation in thoracic and lumbosacral myotomes, with no muscle activation in the right leg and reduced muscle activation in the left leg.
Manual muscle testing was performed for all major muscle groups in both upper extremities with a focus to test at least 2 muscles from each corresponding myotome from C5-T1.