Observation

This question was attempted by many candidates and their performance was very poor.   

In part (a) candidates could not correctly define muscle tone.

In part (b) candidates could not correctly state effects of exercise on muscles and the heart.

The expected answers are as follows:

7.(a)     MUSCLE TONE

           -           Is the state of continual partial contraction of the muscle

           -           The healthy condition of the muscles (not slack, not flabby)                                                                                                                                               

(b) (i) EFFECTS OF EXERCISE ON THE MUSCLE                                                               -           -           increases muscle size

           -           develops muscle strength

           -           enables muscle to develop more myoglobins

-           helps to improve muscle tone

-           enables muscles to have greater endurance                                       

 (ii)     EFFECTS OF EXERCISE ON THE HEART

•       increases the heart size and weight

           -          reduces heart beat per minute/low resting heart rate/pulse rate

           -           increases heart efficiency/strengthens heart muscles

           -           increases heart stroke volume/amount of blood pumped per minute

           -           increases heart endurance

           -           exercise prevents heart related diseases