myotome


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Related to myotome: sclerotome

myotome

 [mi´o-tōm]
1. an instrument for dividing muscles.
2. the muscle plate or portion of a somite that develops into voluntary muscle.
3. a group of muscles innervated from a single spinal nerve. adj., adj myotom´ic.

my·o·tome

(mī'ō-tōm),
1. A knife for dividing muscle.
2. In embryos, that part of the somite that develops into skeletal muscle. Synonym(s): muscle plate
3. All muscles derived from one somite and innervated by one segmental spinal nerve.
4. In primitive vertebrates, the muscular part of a metamere. Synonym(s): myomere
[myo- + G. tomos, a cut]

myotome

/myo·tome/ (mi´o-tōm)
1. an instrument for performing myotomy.
2. the muscle plate or portion of a somite that develops into noncardiac striated muscle.
3. a group of muscles innervated from a single spinal segment.myotom´ic

myotome

(mī′ə-tōm′)
n.
1. A segmental mass of mesoderm in a vertebrate embryo that differentiates into skeletal muscle.
2. A muscle or group of muscles derived from one somite and innervated by a single segment of a spinal nerve.
3. A knife for dividing muscle during surgery.

myotome

[mī′ətōm]
Etymology: Gk, mys + temnein, to cut
1 also called myomere, the muscle plate of an embryonic somite that develops into a voluntary muscle.
2 a group of muscles innervated by a single spinal segment.
3 an instrument for cutting or dissecting a muscle.

my·o·tome

(mī'ō-tōm)
1. A knife for dividing muscle.
2. In embryos, that part of the somite that develops into skeletal muscle.
Synonym(s): muscle plate.
3. All muscles derived from one somite and innervated by one segmental spinal nerve.
4. In primitive vertebrates, the muscular part of a metamere.
Synonym(s): myomere.
[myo- + G. tomos, a cut]

myotome

a muscle block that is repeated in each METAMERIC SEGMENT. Segmentation becomes much modified in the head region, and where paired limbs are developed.

myotome

muscles derived from a single embryonic somite, innervated by branches of the same spinal nerve

myotome (mīˈ··tīm),

n the collection of all muscles sharing a block of mesodermal tissue as their origin and innervated by a single spinal nerve segment.

myotome

1. an instrument for dividing muscles.
2. the muscle plate or portion of a somite that develops into voluntary muscle.
3. a group of muscles innervated from a single spinal nerve.
References in periodicals archive ?
She had a normal response to light and sharp touch from C5-T1 dermatomes bilaterally, with intact deep tendon reflexes and myotomes along the same levels.
We proceeded to focus on the cerebellum and the parietal cortex, resetting the myotomes in the cervical spine, upper extremities, pelvic girdle, and lower extremities, in that order.
These muscles represent the myotomes for neural segments representing the arms (levels C5 through T1) and legs (levels L2 through S1).
Nevertheless, in Hippocampus new organisation and proportions of the myotome muscles (Hale, 1996) could play an important mechanical role in the described deformation of centra.
The myotome tissue of cephalochordates consists of chevron-shaped bundles of cells, and the notochord tissue consists of a lamellar structure of stacked cells surrounded by a fibrous sheath.
For example LU3,4 or LI8 are recommended by the author because they are in different muscles but they share the C5/6 myotome innervation.
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.
Characterization of the early development of specific hypaxial muscles from the ventrolateral myotome.
Weakness was noted with abduction, adduction and flexion of the fingers corresponding to the C8-T1 myotome.
5) PPT values of myotomes, sclerotomes and dermatomes between L1 and S3 segments were evaluated and lower PPT values were reported in CLBP patients.
Electromyography (EMG) showed active denervation in L2 to L4 myotomes and fasciculations (Figure-1), comparable with PPS (Table-1).