Enlargement of muscles in children and adults that results from an increase in the size of each muscle fiber is called .

An increase in the size of muscle fibers, due to strength training is calleda. atrophyb. sarcopeniac. hyperplasiad. hypertrophy

Fill in the blanks with suitable words in the following box. There are TWO EXTRA words.atrophyimmobilizationsarcopeniaresistancehyperthermiainsulinhypertrophywastingMuscle (1) is a condition in which muscle bulk increases due to the growth of muscle fibres. Such growth increases the size of skeletal muscles and can be achieved by muscular training, increased use of muscles, and the use of some hormones such as anabolic steroids (testosterone). Some types of muscle training such as weight bearing or (2) training specifically enhance the growth of muscle fibers. Muscle (3) is a condition of decreased muscle bulk, also referred to as muscle (4). This can occur as a result of many conditions: poor nutrition or starvation, and (5) of muscles for a protracted time. Some chronic diseases and medical conditions can cause reduced muscle mass e.g., cancer, tuberculosis, AIDS, etc. A decrease in muscle mass can also be found as people grow older, and such a condition is called (6).

The long, cylindrical, contractile portions of a muscle fiber, which are composed of even smaller myofilaments, are called .

Muscle growth during puberty occurs:Question 7Answera.only females.b.both sexesc.in neither sex.d.only males.

Check all of the terms below that will correctly complete this statement. During a muscle fiber contraction, the _________ decreases in size.  Check All That ApplyA bandA bandentire sarcomereentire sarcomereH zoneH zoneI bandI band