1) From how many weeks of gestation does connective embryonic tissue start to form a framework for the skeletal system? a) 2 b) 3 c) 4 d) 5 2) What is the name of the process in which either connective tissue or cartilage calcifies to form bone? a) Osteoporosis b) Ossification c) Osteobalance d) Osteogenesis 3) At what age do bones stop growing? a) 18 years b) 21 years c) 25 years d) 28 years 4) What bones are formed via intramembranous ossification? a) The mandible b) Most of the cranial bones c) The humerus d) The clavicle e) The vertebrae f) The ribs 5) What type of connective tissue is calcified during endochondral ossification? a) Cartilage b) Collagen c) Mesenchyme d) Fibrous tissue 6) What is the name of the cavity that forms from primary ossification centres in the middle of bones, where bone marrow can be found? a) The periosteum b) The medullary cavity c) The marrow cavity d) The vascular cavity 7) The epiphysis contains a medullary cavity? a) True b) False 8) What type of bone tissue is formed from trabeculae? a) Spongy bone b) Compact bone 9) The shaft of a long bone is called the what? a) The epiphysis b) The metaphysis c) The diaphysis 

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