Muscle Module 5 Flashcards
Muscle types can be classified in two ways
metabolic types
contractility types
what are the metabolic types
oxidative, glycolytic, oxyglylitic
what are the contractility types
twitch and titanic force
This is regularly a rapid change in
atp needs with muscle contraction
What is the typical ATP concentration inside a cell and how quickly does it burn
The concentration of ATP is 5mm and it take 5 secs to burn
___________ phosphate stored in muscle fibers and it gives up a high energy phosphate transfer it to ADP to generate ATP
high energy phosphate system
____________ is catalyzed by creative phosphokinase
high phosphate system
______________ is where glycogen is metabolized to generate ATP
anaerobic metabolism or glycolysis
what are the key features of anaerobic metabolism
- no O2 required
- fast
- low yield ATP/ glucose
- rapidly depleted
_______________ is where glucose can be used to generate ATP
Aerobic metabolism
oxidative phosphorylation
what are the key features of Aerobic metabolism
- requires O2
- high yield- 3 ATP and glucose
- relatively slow
_______________ oxidative phosphorylation, plentiful O2
aerobic muscle fibers
Having plentiful O2 molecules means that
- well developed vascular system, mitochondria,
- high O2 binding sites myoglobin and hemoglobin
______________:
- glycolysis
- high levels of glycogen
- low O2 and O2 binding molecules
aerobic muscle fibers
___________ are larger in diameter and white from lacking O2
anerobic muscle fibers
____________ are small in diameter and fatigue resistant and are red from O2 richness
aerobic muscle fibers
______________ does not favor glycolysis oxidative phosphorylation
intermediate oxidative/ glycolytic
division by speed of contraction
- slow MHC
- Fast MHC
For V max
Type 1: slow
Type 2a: fast
Type 2b: fast
glycolytic activity
Type 1: low
Type 2a: med
Type 2b: high
oxidative
Type 1: high
Type 2a: med
Type 2b: low
fatigue resist
Type 1: high
Type 2a: med
Type 2b: low
diameter
Type 1: small
Type 2a: med
Type 2b: large
mitochondria
Type 1: many
Type 2a: many
Type 2b: fewer
sarcoplasmic reticulum development
Type 1: low
Type 2a: high
Type 2b:most
Ca 2+ pump
Type 1: low
Type 2a: high
Type 2b:high
changes in muscle use leads to ______________
metabolic changes (changes in mitochondria changes in glycogen changes in cross section
There will be no changes in muscles
- no change fiber number
- no change in MHC gene expression
- no change in fiber type
there are how many fibers in one contraction
2 fast fibers
1 slow fiber
