While Playing Softball, Sid Pulls His Hamstring Muscle

question 25

Essay

While playing softball, Sid pulls his hamstring muscle. As a result of the injury, he has difficulty extending and medially rotating his thigh. Which muscle(s) of the hamstring group did he probably injure?

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Definitions:

Hemophilia

An X-linked chromosomal disorder involving abnormal blood clotting.

Blood Clot

A mass formed by the coagulation of blood in response to injury or a medical condition, which can impede blood flow.

Dominant Inheritance

A genetic principle in which an allele expresses its phenotype even in the presence of a recessive allele.

Allele

One of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.