Question

cells and body systems online practice
complete this assessment to review what youve learned. it will not count toward your grade.
which part of the body produces blood cells? (1 point)
o collagen
o periosteum
o calcium
o bone marrow
check answer remaining attempts : 3

Explanation:

Bone marrow is the spongy tissue inside bones that contains stem cells. These stem cells develop into red blood cells, white blood cells, and platelets. Collagen is a protein that provides structure to various tissues. Periosteum is a membrane covering bones. Calcium is a mineral important for bone strength but does not produce blood cells.

Answer:

bone marrow