Distributions of adipocyte, blood vessel, and muscle fiber in human lateral petrygoid muscle during ageing.
The composition of adipocyte, blood vessel, and muscle fiber during ageing from 30 to 90 years of age was examined by a computer analyzing system in human lateral petrygoid muscle. The human lateral petrygoid muscle, the intramuscular connective tissue with adipocyte and blood vessel, displayed a specific change in morphology during ageing. Numerous adipocyte appeared around the blood vessel in the perimysium of the human petrygoid muscle from 60 years of age. The percentage and size of adipocyte and vein per 10,000 micron 2 of the cross sectional area in the muscle increased as well. However, the cross sectional area of muscle fiber was almost constant. The increase of adipocyte was related with changes of blood vessel and connective tissue in the perimysium.
Sato
I
I
Department of Anatomy, School of Dentistry at Tokyo, The Nippon Dental University, Japan.
Sunohara
M
M
Takahashi
H
H
Kumagai
M
M
Sato
T
T
D017667:Adipocytes / Q000166:cytology*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging; D001158:Arteries / Q000033:anatomy & histology; D006801:Humans; D008875:Middle Aged; D018485:Muscle Fibers, Skeletal / Q000166:cytology*; D011626:Pterygoid Muscles / Q000033:anatomy & histology* / Q000098:blood supply* / Q000166:cytology; D014680:Veins / Q000033:anatomy & histology