Hypertrophy of skeletal muscles from weightlifting is caused by an increase in theMultiple Choicenumber of nuclei within the muscle fibers.number of striations.size of muscle fibers.number of muscle fibers.

Select all that applyIdentify characteristics of hypertrophy.Multiple select question.Can occur in response to exerciseIs an increase in the size of a muscle fiberInvolves a wasting away of unused muscle tissueIs a decrease in muscle size due to the wasting of muscle cellsIs a substantial increase in the numbers of muscle fibers in a muscle

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

Skeletal muscle hyperaemia during exercise is primarily due to:Group of answer choicesactivation of the muscle pumpsympathetic, cholinergic vasodilationmetabolic vasodilators released from contracting skeletal muscle

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).

Which of the following in not associated with a resistance training-induced change in the muscle cell? increase in the percentage of Type I muscle fibers. hypertrophy of Type II muscle fibers. increased number of myonuclei. increased activity of antioxidant enzymes.