Question 11 Where would we find yellow bone marrow? (a) surrounding the outside of the flat bones in the shaft of the long bones in the flat bones of the skull ) surrounding the outside of the long bones Question 12 The number of bones in a newborn exceeds the number of bones in an adult. Why would the number of bones decrease over time? (a) Some of the bones of babies will eventually fuse together to become one larger bone. The bones of a baby are more fragile than an adult, so more are needed to support the weight of the body. Some bones are lost when they are replaced by adult versions, like the loss of baby teeth. (D) As some bones grow larger, others do not and are no longer needed. Question 13 The hormone removes calcium from the blood and causes it to be stored in the bone. Enter answer Question 14 Which of the following cells form new bone in bone tissue? (a) osteocytes fibroblasts () osteons (D) osteoblasts