Colombia
Forum Guru
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All are characteristics of skeletal muscle type I, except:
1-Number of mitochondria= many
2-Glycogen content=Low
3-Speed of contraction= Slow
4-Glycolytic enzymes = High
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| crista
Forum Guru
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if I is intermediar fiber, answer is 3 (it has fast contraction)
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| Colombia
Forum Guru
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Nope
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| asmi
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is it 2 ?
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| Colombia
Forum Guru
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nope
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| asmi
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i thought its red muscle.. :roll:
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| Colombia
Forum Guru
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yes asmi is red muscle
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| asmi
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i think its 1
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| Colombia
Forum Guru
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nope
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| asmi
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:cry: :cry: is it 4
iam very poor on this 
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| usmleasr
Forum Guru
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it is simple asmi..type 1 or red fibers...are postural muscles...implies they use less fuel(glucose) in effective way...becos they have to work looong like us...so they do aerobic metabolism ..so more myoglobin...to take up more oxygen..more mitochondria for TCA cycle..as i told less fuel..less glycogen content...they are slow...
incontrast fast fibers type2..depend on anaerobic glycolysis...as with exercise and fast actions..so they have more glycolytic enzymes..
cool isn't it? 8)
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| Colombia
Forum Guru
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Posts: 438
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<:flag:>
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| asmi
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thanks usmleasr...
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| asmi
Forum Hero
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thanks colombia for a good Q
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| krsma
Forum Elite
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Muscle type I :
slow-twitch
aerobic metabolism
+++ myoglobin
+++ mitochondrion
+++ large blood supply
"dark" meat
Muscle type II :
fast-twitch
anaerobic metabolism
+++ glycogen
+++ glycolytic enzymes
intense, but sporadic contraction
"white" meat
Therefore, the answer is 4, because glycolytic enzymes are high in type II, not in type I
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| krsma
Forum Elite
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Posts: 227
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sorry guys, I didn't see that the question was already answered. :wink:
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