Final answer:
Heart damage can cause the heart to stop pumping blood, while skeletal muscle damage can lead to changes in muscle size and strength.
Step-by-step explanation:
Heart damage and skeletal muscle damage can both lead to certain impairments in the body.
Heart damage, such as hyperkalemia (elevated potassium level), can result in an inability of the heart to relax after a contraction, which can lead to a seizure and stoppage of blood pumping. This can be fatal within minutes.
Skeletal muscle damage can result in atrophy (decrease in muscle size and strength) or hypertrophy (increase in muscle size and strength), depending on factors like hormones, stress, and exercise.