An advantage of the large fiber diameter of fast glycolytic muscle is
a. it's correlated with its large volume, which in turn means it can hold more oxygen, and generate ATP aerobically.
b. it implies more cross-sectional area and the fiber can therefore hold more mitochondria, which means it can generate more ATP to power contraction.
c. it has less surface area relative to its volume, so it
depolarizes more rapidly, since current has less distance to spread.
d. it has more myofibrils per unit length, which means it can form more cross-bridges, and generate more power (force).
e. none of these.
D
You might also like to view...
Winking or blinking the eye is controlled by the
A) corrugator supercilii. B) depressor anguli oris. C) orbicularis oculi. D) occipitofrontalis. E) orbicularis oris.
The carotid body:
a. receives sensory fibers from cranial IX b. is located next to the carotid artery c. provides information about blood pressure d. all of the above
The word part that means breathing is
A) pleur/o B) pneum/o C) pneumon/o D) spir/o
Neuronal stimulation of skeletal muscle is always excitatory, whereas neuronal stimulation of smooth muscle may be excitatory or inhibitory
Indicate whether the statement is true or false.