Collagen mcq step 1 help out?

Radiographic studies of a 65-year-old man with chronic hip pain reveal marked narrowing of the space between the femur and the hip socket. The long-suffering is surgically treated with removal of the proximal femur and replacement with a prosthesis. Gross examination of the femoral team leader shows loss of much of the joint cartilage and multiple tiny clefts in the remaining cartilage. The disease process that produces this joint abnormality is thought to be relatebeside yourselfpart, to proteolytic attack on which of the following types of collagen?
A. Collagen type I****i think this is correct!
B. Collagen type II
C. Collagen type III
D. Collagen type IV
E. Collagen type V
Answers:
B. Collagen type II

Type II is the collagen that makes up cartilage. Type I is skin, bone,and other soft tissues.
I believe you're right. A similar question on an NBME test goes:

A 57-year matured man receives a titanium implant during total hip arthroplasty after traumatic injury. Bone ingrowth anneals the implant to the femur and acetabulum, securing it surrounded by place. Type I Collagen formation in the first stage of matrix formation is mediated by which cell type:

Answer: Osteoblast

Not sure if this helps, but perchance you should post this question on SDN Step 1 forums. Source(s): I'm also taking the beast next month!

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