Chapter 9 Flashcards
(18 cards)
What fibers depend on oxygen delivery and aerobic mechanisms
slow (oxidative) fatigue-resistant fibers
what fibers have very fast acting myosin ATP and depend upon anaerobic metabolism during contraction
Fast (oxidative or glycolytic) fatigable fibers
what fibers contain an abundant amount of glycogen
Fast (oxidative or glycolytic) fatigable fibers
what fibers contain a relatively high percentage are found in successful marathon runners
Slow (pxidative) fatigure resistant fibers
Which muscle cells have the greatest ability to regenerate
smooth
most skeletal muscles contain
a mixture of fiber types
the strongest muscle contractions are normally achieved by
increasing the stimulation up to the maximal stimulus
which is a factor that affects the velocity and duration of muscles
load on the fiber
what does myoglobin do
stores oxygen in muscle cells
what surround the individual muscle cell
endomysium
rigor mortis occurs because
no ATP is available to release attached actin and myosin molecules
what is not a connective tissue sheath that wraps individual muscle fibers
aponeurosis
the muscle cell membrane is called the
sarcolemma
muscle tone is
a state of sustained partial contraction
in an isotonic contraction the muscle
changes in length and moves the load
muscle tissue has all of the following properties except
secretion
an anaerobic metabolic pathway that results in the production of two net ATP per glucose plus two pyruvic acid molecules is
glycolysis
what is the most distinguishing characteristic of muscle tissue
the ability to transform chemical energy into mechanical energy
