Muscles dominated by slow-twitch fibers appear _________ due to the presence of _________.
A) white; calcium
B) white; myoglobin
C) red; calcium
D) red; myoglobin

Question

Quizplus · Accepted Answer

Muscles dominated by slow-twitch fibers are red due to the presence of myoglobin, which is a protein that binds to oxygen and gives the muscle its red color. Myoglobin allows for sustained aerobic activity, which is the primary function of slow-twitch muscle fibers.

Muscles Dominated by Slow-Twitch Fibers Appear _________ Due to the Presence