An Olympic Sprinter Readies for a Race

question 66

Multiple Choice

An Olympic sprinter readies for a race.After the sound of the starting gun,he propels himself forward from the starting block and immediately grimaces in pain,grabbing for the back of his thigh.Within 48 hours he begins noticing extensive bruising on the back of his thigh extending into the back of the knee.He now has difficulty rising from a seated position and flexing his knee.Bending at the waist generates more pain.Which muscle is likely injured?

• A) Gluteus maximus
• B) Popliteus
• C) Biceps femoris
• D) Gastrocnemius
• E) Iliopsoas

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Definitions:

Velocity

The speed of an object in a given direction.

Turbulence

Irregular, chaotic motion of fluid or air, often causing rapid changes in speed and direction.

Hydrograph

A chart that shows the flow of water, typically in rivers or streams, over a period of time, illustrating changes in water level or discharge.

River's Discharge

The volume of water flowing through a river channel at any given location and time, typically measured in cubic meters per second.