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. Biceps femoris
b. Miopsoas opsoas
c. Gluteus maximus
d. Popliteus
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?
The correct answer is option A - Biceps femoris.
Explanation:
. One of the muscles of the hamstring compartment is the Biceps femoris. It is an essential muscle of the back thigh. Its injury is generally seen in sprinters. Its injury leads to the pain generally extending from the thigh region to the back of the knee and upwards to the fold of the buttocks.
Therefore, the correct answer is option A - Biceps femoris.
During exhalation, the diaphragm also relaxes, moving higher into the thoracic cavity. This increases the pressure within the thoracic cavity relative to the environment. Air rushes out of the lungs due to the pressure gradient between the thoracic cavity and the atmosphere.
To administer the patient
defibrillating an adult patient, the nurse should continue good contact among
the paddles and the patient's skin to stop arcing, apply an appropriate
conducting agent (not water) between the skin and the paddles, and ensure the
defibrillator is in the nonsync mode. "Clear" should be called three
times before discharging the paddles.
