Morphometric ultrastructural analysis of muscle fibers and neuromuscular junction in rats kept under conditions of weightlessness for 21 days.
The aim of the study was qualitative and quantitative analysis of muscles and neuromuscular junctions of m. quadriceps, m. diaphragma and m. soleus in rats after being kept for 21 days under conditions of weightlessness. Degenerative changes were noted in both of these subjects and their intensity depended on the kind of fibres. The disorders were most pronounced in fibres and neuromuscular junctions of the soleus muscle in which red fibres prevail.
Barański
S
S
Institute of Aviation Medicine, Warszawa, Poland.
Marciniak
M
M
D000818:Animals; D008297:Male; D009132:Muscles / Q000648:ultrastructure*; D009469:Neuromuscular Junction / Q000648:ultrastructure*; D051381:Rats; D011919:Rats, Inbred Strains; D013026:Space Flight; D013997:Time Factors; D014586:USSR; D014893:Weightlessness / Q000009:adverse effects*