SLCC Exam 3 Quizlet Questions With
Complete Solutions
H zone only myosin
Titian Provides structural support
termination of contraction Ca2+ must leave troponin, allowing tropomyosin to cover
myosin binding sites on actin
To remove Ca2+ from cytosol
Ca2+-ATPase in the sarcoplasmic reticulum
Transports Ca2+ from cytosol into the sarcoplasmic reticulum
isotonic twitch a twitch during which a muscle shortens and lifts a constant load
Tension Produced by each fiber
Isometric twitch A twitch during which a muscle generates for but does not shorten
, SLCC Exam 3 Quizlet Questions With
Complete Solutions
Best tension Right in the middle w/ the cross bridges
motor unit a motor neuron and all the muscle cells it stimulates
recruitment stimulus is sent to more muscle fibers, leading to more precise control
Slow oxidation fibers Appear dark red because they contain large amounts of myoglobin
and many blood capillaries. Generate ATP mainly by aerobic respiration
fast oxidative fibers contract quickly, have fast myosin ATPases, and have moderate
resistance to fatigue, Aerobic
fast glycolytic fibers Important for short-term intense, powerful movements. Prefer
glycolysis to make atp
muscle spindles receptors sensitive to change in length of the muscle and the rate of that
change
Complete Solutions
H zone only myosin
Titian Provides structural support
termination of contraction Ca2+ must leave troponin, allowing tropomyosin to cover
myosin binding sites on actin
To remove Ca2+ from cytosol
Ca2+-ATPase in the sarcoplasmic reticulum
Transports Ca2+ from cytosol into the sarcoplasmic reticulum
isotonic twitch a twitch during which a muscle shortens and lifts a constant load
Tension Produced by each fiber
Isometric twitch A twitch during which a muscle generates for but does not shorten
, SLCC Exam 3 Quizlet Questions With
Complete Solutions
Best tension Right in the middle w/ the cross bridges
motor unit a motor neuron and all the muscle cells it stimulates
recruitment stimulus is sent to more muscle fibers, leading to more precise control
Slow oxidation fibers Appear dark red because they contain large amounts of myoglobin
and many blood capillaries. Generate ATP mainly by aerobic respiration
fast oxidative fibers contract quickly, have fast myosin ATPases, and have moderate
resistance to fatigue, Aerobic
fast glycolytic fibers Important for short-term intense, powerful movements. Prefer
glycolysis to make atp
muscle spindles receptors sensitive to change in length of the muscle and the rate of that
change
