Question

question 46
which of the following statements regarding muscle fiber types is true
individual performance differences cannot be attributed to the varying percentages of the muscle fiber types.
the number of ft and st fibers does not vary from one individual to another.
most skeletal muscles contain both ft and st fibers.
the number of ft and st fibers varies from one muscle to another.
both b and d.
question 47
a group of fibers activated via the same nerve is termed a
question 48

Explanation:

• For Question 46: Most skeletal muscles contain a mixture of fast - twitch (FT) and slow - twitch (ST) fibers. Individual performance can be related to fiber type percentages, and the number of FT and ST fibers varies between individuals and between different muscles.
• For Question 47: A group of fibers activated by the same nerve is called a motor unit.

Answer:

Question 46: Most skeletal muscles contain both FT and ST fibers.
Question 47: Motor unit