Which of the following is a site for a muscle or ligament attachment?
a. sinus
b. fossa
c. trochanter
d. foramen
e. groove

Trochanter

Explanation:

All of these choices are colletively known as bone markings.

Trochanter is an example of a site for a muscle or ligament attachment. We have two trochanters, the greater trochanter and the lesser trochanter. You can find these in the femur, or the thighbone. These are points where the muscle of the hips and the muscle of the thighs are attached.

Eliminating the rest:

Sinus is a cavity or a sac of air, common in the cranium (skull).

Fossa is a depression on the bone.

Foramen is an openning in the bone. You can see this in the vertebral column. There's a space or hollow area in the vertebrae where the spine runs through.

Groove is a furrow or a line that runs along the bone. It is gives space for a blood vessel to fit in so it won't get compressed by the muscles around it.

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