Video Transcript
The diagram provided shows a
simplified outline of the pelvic girdle. Which letter represents the
ischium?
Let’s start by quickly reviewing
the structure of the pelvic girdle.
The pelvic girdle connects the legs
to the trunk of the body and is composed of several different bones that are joined
together into what is commonly known as the pelvis. The two main pelvic bones are
attached to the sacrum, or very bottom of the vertebral column, on one side and to
one another via the pubic symphysis, which is located at the midline of the body on
the other side.
These two large pelvic bones are
actually composed of smaller bones fused together. The largest of these fused bones is
the ilium, designated by an X in this diagram. The ischium is designated by the
letter Z. The ischium is located behind the
pubis bone, which sticks out a bit in front and which is designated on this diagram
by Y. It is actually the two pubis bones
that are joined together by the pubic symphysis.
We are asked in this question
“Which letter corresponds to the ischium?” So the correct answer is Z. The ischium is represented in the
diagram by the letter Z.
