Help me answer these please 4.) The unique shapes of the bones in the spine are difficult to describe. They have several parts that stick out from the main body of the bone where other tissues attach. They have very specialized functions related to their various shapes. Which type of bone are these?

A. flat
B. long
C. short
D. irregular

6.) Where are you likely to find cartilage? Select all that apply.

A. in the skeleton of a fetus
B. in the center of a mature bone
C. covering the ends of long bones
D. in between the bones of the spine

10.) Which are components of the bone matrix? Select all that apply.

A. minerals
B. epiphysis
C. collagen fibers
D. blood vessels

11.) Calcium and phosphate are important parts of the bone matrix because they:

A. provide flexibility to bone. B. promote the formation of cartilage.
C. provide strength and durability to bone.
D. produce blood cells in the bone marrow.