Fibre types of M. pectineus of the cat (Felis domestica).
As revealed by the NADH-diaphorase, SDH and myosin ATPase, the M. pectineus of the cat possesses at least 3 main kind of fibres, with different distribution on the superficial and deep portions of the muscle. The superficial portion revealed that 23.6% are FOG fibres: 17.8% are SO fibres and 58.6% are FG fibres. Already the deep portion revealed that 61.4% are FOG fibres: 14.5% are SO fibres and 24.1% are FG fibres. The myosin ATPase reaction was used to demonstrate contracting characteristics. These findings suggest that the movements of fast contraction of M. pectineus are predominant.
Rodrigues
A de C
Ade C
Department of Anatomy and Morphology, State University Julio de Mesquita Filho, São Paulo, Brazil.
Dall Pai
V
V
Tamega
O J
OJ
Guazzelli Filho
J
J
D000818:Animals; D002415:Cats / Q000033:anatomy & histology*; D005260:Female; D008297:Male; D009132:Muscles / Q000033:anatomy & histology*