41) Of the various types of skeletal muscle fibers, the type with the most mitochondria is
A) slow oxidative fibers.
B) fast glycolytic fibers.
C) fast oxidative fibers.
D) slow glycolytic fibers.
42) Of the various types of skeletal muscle fibers, the type that produces the most power is
A) slow oxidative fibers.
B) fast glycolytic fibers.
C) fast oxidative fibers.
D) slow glycolytic fibers.
43) Of the various types of skeletal muscle fibers, the type containing the most glycogen granules is
A) slow oxidative fibers.
B) fast glycolytic fibers.
C) fast oxidative fibers.
D) slow glycolytic fibers.
44) The only muscle cells that branch are ________ muscle cells.
A) skeletal
B) smooth
C) cardiac
D) red
45) Which type of muscle fiber has no myofibrils?
A) skeletal
B) smooth
C) cardiac
D) red
46) Which protein strengthens the sarcolemma by connecting the cytoskeleton with the extracellular matrix?
A) actin
B) dystrophin
C) myosin
D) titin
47) Which type of muscle fiber has caveolae but no T tubules?
A) skeletal
B) cardiac
C) smooth
D) white
48) The area that contains no thin filaments is known as the
A) H zone.
B) I band.
C) intercalated disc.
D) A band.
49) With intense resistance training,
A) fast glycolytic fibers can convert to fast oxidative fibers.
B) fast oxidative fibers can convert to fast glycolytic fibers.
C) slow oxidative fibers can convert to fast glycolytic fibers.
D) slow oxidative fibers can convert to fast oxidative fibers.
50) Myoglobin
A) binds and stores oxygen for ATP production.
B) is found within the T tubules.
C) is released by the sarcoplasmic reticulum.
D) provides energy for contraction.