Why will and individual who lifts weights build larger muscles?
A)skeletal muscles are hyperplasic and respond to stress
B)skeletal muscle myofibrils and cells increase in number
C)skeletal muscles increase number of myofibrils but not number of cells
D)skeletal muscles signal satellite cells to increase number of cells

Question

Quizplus · Accepted Answer

When an individual lifts weights, it results in hypertrophy of skeletal muscle fibers, which means an increase in the size of muscle fibers. There is an increase in the number of myofibrils within existing muscle cells but not an increase in the number of cells. This leads to an increase in the overall size of the muscle. Hyperplasia, or an increase in the number of muscle fibers, in response to weightlifting is controversial and not well-supported by research. Satellite cells do play a role in muscle repair and growth, but they are not the primary mechanism for increasing muscle size through weightlifting.

Why Will and Individual Who Lifts Weights Build Larger Muscles