Skeletal muscle

Query  to the TRRD database:
genes expressing in SKELETAL MUSCLE
Select species:            
All       Human     Murine   

Origin: trunk - paraxial mesoderm, somites, myotomes; limbs - mesenchyme; eye - neuromesenchyme.

Striated muscle fibers

(multinucleated syncytium, symplasts)

Function: contraction: movements and maintenance of body position, posture.

Composition: contractile proteins: actin, myosin, tropomyosin, troponin and others; myoglobin, glycogen, calcium ions...

Composition: large amounts of myoglobin and cytochromes, oxidative enzymes, ATP-ase of slow type.

Composition: large amounts of glycogen, glycolitic enzymes, ATP-ase of fast type.

Composition: between red and white fibers.

Satellite cells

Function: stem cells, may proliferate.

Location: between plasma membrane and basal lamina of fiber.