Question

question 4
which type of bone cells have ruffled borders and secrete acids?
a osteocytes
b osteoblasts
c osteochondral progenitor cell
d osteoclasts

Explanation:

Osteoclasts are large multinucleated cells. They have a ruffled border which increases the surface area for bone resorption. They secrete acids (such as citric acid and lactic acid) and proteolytic enzymes (like cathepsin K) that break down the bone matrix. Osteocytes are mature bone cells involved in maintaining bone tissue. Osteoblasts are responsible for bone formation (secreting bone - forming matrix). Osteochondral progenitor cells are stem - like cells that can differentiate into osteoblasts or chondroblasts.

Answer:

D. osteoclasts