Deck 5 of muscles Flashcards
what are the 2 types of muscle contractions
isotonic contraction
isometric contraction
isotonic contraction causes skeletal muscle to do what
change length
what are the 2 sublayers of isotonic contraction
concentric contraction
eccentric contraction
concentric contraction info
muscle tension > resistance
muscle shortens
eccentric contraction info
muscle tension< resistance
muscle lengthens
controls rate of elongation
what is isotonic contraction the same of
same tension
what is isometric contraction the same of
same length
when is it that muslce develops tenstion but is prevented from changing length
during isometric contraction
Muscle tone is increased when what
when exercise is increased
what is normal tension and firmness of a muscle at rest due to
activity of a subset of muscle fibers within muslc eorgan (contraction)
what muscle contraction uses a lot of ATP
sustained
is atp present at rest within muscle
yes
how long does atp provide enrergy to contract a muscle for
about 2 sedc
each thich filament breakdowns approx how much atp
2500 atp /sec
muscles store enough atp to do what
start contraction
do muscles have a short or long term storage of energy
short term
muscles fibers must make what as needed
more atp
what does aerobic metabolism do
breaks down glucose more completely with the requirement of oxygen
glycolysis function
to generate atp
to provide the substrate for aerobic metabolism
glycolysis info
anaerobic
in cytoplasm
makes 2 atp per 1 glucose
aerobic respiration info
aerobic
in mitochondira
makes 34 or 36 atp per 1 glucose
what happens to resting muscle in regards of muscle metabolism
there is an adequate oxygen amount
building energy reserves through mitochondria breaking down there substrates
at rest which is greater:
atp synthesis or atp consumption
atp synthesis
At moderate activity which is greater:
atp synthesis or atp consumption
they are equal
at maximum activity which is greater:
atp synthesis or atp consumption
they are equal
what happens during moderate activity in regards of muscle metabolism
depleted enrgy reserves and o2 adequate
glycolysis provides substrate for aerobic respiration
what happens during max activity in regards of muscle metabolism
depleted energy reserves and o2 inadequate
what are the 3 requirements form normal muscle function
intracellular energy reserves
circulatory supply of oxygen
ph between 7.3 and 7.5
primer mover other name
agonist
secondary mover other name
antagonist
third mover that reinforces action name
synergist
what do fixators do
stabilize another joint
are muscles redundant
no, some ovelap but some are things that muscles do individually
