Fill in the blank with the appropriate term.
 1. Cartilage is a type of dense ___________________ tissue.
 2. The skeleton provides attachment surfaces for __________________.
 3. The skeleton maintains ________________ homeostasis.
 4. When mineral levels in the blood are too high, bones absorb some of the minerals
 and store them as mineral ___________________.
 5. Bone matrix is crisscrossed by blood vessels and ___________________.
 6. Osteoclasts dissolve minerals in bone ___________________.
 7. Bone marrow is found inside the pores of ________________ bone.
 8. Early in the development of a human fetus, the skeleton is made entirely of
 ______________________.
 9. By birth, several areas of cartilage remain in the skeleton, including the ends of the
 ___________________ bones.
 10. With the help of muscles, joints work like mechanical ___________________.
 11. The surfaces of bones at joints are covered with a smooth layer of cartilage that
 reduces ___________________ at the points of contact between the bones.
 12. Immovable joints allow no movement because the bones at these joints are held
 securely together by dense ___________________.