Muscle Physiology

Question 1

Cellular components of a skeletal muscle that contains myofibrils

Answer 1

Muscle fiber

Question 2

Slender threads in a muscle that run parallel with the long axis of the fiber and are composed of numerous myofilaments

Answer 2

Myofibrils

Question 3

Development of large muscle fibers

Answer 3

Hypertrophy

Question 4

Skeletal muscle fibers having high myofibrillar ATPase activity

High glycolytic enzyme activities, and an intermediate glycogen content which produces a fast twitch

Answer 4

Fast twitch muscles

Question 5

Skeletal muscle fibers having low myofibrillar ATPase activity

Low glycogen content, and high myoglobin content, high mitochondrial oxidative enzyme activities, and an intermediate mitochondrial content which produces slow twitch and are fatigue resistant

Answer 5

Slow twitch muscle

Question 6

Composed of a single motor nerve and the group of muscle fibers it supplies

Answer 6

Motor unit

Question 7

The cell nucleus serves as the control center for protein production in muscle cells

Answer 7

Protein synthesis

Question 8

Muscle tension represents the most important factor that increases the rate of muscle protein development

Answer 8

Muscle tension

Question 9

Testosterone
Growth hormone
Insulin
Are the 3 most important hormones that affect protein synthesis in muscle

Answer 9

Hormones

Question 10

Ability to perform a discrete motor task

Answer 10

Skill