Question

As Marie rounded the corner, she saw that people were already boarding her bus. Worried that she would miss her ride to campus, she sprinted to the bus stop. In what order were skeletal muscles recruited during her sprint?

Answer 1

Skeletal muscles

Explanation:

There are three types of skeletal muscles in the body

• Slow oxidative muscles have a high supply of oxygen and use aerobic respiration, contain a high supply of myoglobin; use triglycerides as the main supply of fuel and fatigue very slowly, have a low contractile velocity and break down ATP slowly
• They have a small muscle fiber diameter and therefore produce a low contractile force
• Slow oxidative muscles are used mainly in long-distance activities such as running a marathon
• They are found in places in the body that require a great deal of support, such as back and upper legs
• Fast oxidative muscles use aerobic respiration and contain a high amount of oxygen, myoglobin and mitochondria, but they break down ATP quickly and therefore contract quickly
• They have a medium diameter, which means that that the contraction force is greater than in slow oxidative muscles
• The main fuel source is glycogen
• Fast oxidative muscles fatigue a bit more quickly then slow oxidative and are used in middle distance events, such as running or swimming
• Fast glycolytic fibers primarily use anaerobic glycolysis as their ATP source
• They have a large diameter and possess large volumes of glycogen which is used in glycolysis to generate ATP quickly
• Fast glycolytic fibers fatigue quickly, permitting them to only be used for short periods

So,during sprint skeletal muscles follow the order as: There are three types of skeletal muscles in the body