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Name _____________________________

Date ___________________

Select the definition that most nearly defines the given word.

1.   humerus    gaps between an infant’s cranial bones    upper arm bone    a joint that allows side-to-side rotation; neck is an example    shoulder blades

2.   cranium    substance found in nature that your body needs to stay healthy    hard, white outer layer of a bone    bowl-shaped top part of your skull    tough protein fiber found in bones

3.   spongy bone    upper seven vertebrae in the neck    second layer of bone that is hard but has many holes    natural substance that you need for good health    bone-dissolving cell that breaks up old bone tissue

4.   mineral    center layer of bone through which blood vessels run    finger bones and toe bones    substance found in nature that your body needs to stay healthy    a picture used to see the bones and other internal body structures

5.   collagen    second layer of bone that is hard but has many holes    central portion of the skeleton, consisting of the skull, backbone, and ribs    tough protein fiber found in bones    the vertebral column

6.   x-ray    collarbone    a picture used to see the bones and other internal body structures    gristly material at the ends of bones; also forms a baby’s skeleton    wrist bones

7.   axial skeleton    hard covering used to hold a fracture in place while it heals    central portion of the skeleton, consisting of the skull, backbone, and ribs    roof of your mouth    bowl-shaped top part of your skull

8.   femur    hand bones    foot bones    ankle bones    upper leg bone; it is the longest and strongest bone in your body

9.   fontanels    last two pairs of ribs    hipbones    upper arm bone    gaps between an infant’s cranial bones

10.   metatarsals    lower jawbone    foot bones    tough bands of tissue connecting bones    joint permitting back-and-forth motion; elbows and knees are examples

11.   bone marrow    upper leg bone; it is the longest and strongest bone in your body    center layer of bone through which blood vessels run    hard, white outer layer of a bone    upper leg bone; it is the longest and strongest bone in your body

12.   tarsals    ankle bones    tough protein fiber found in bones    wrist bones    lower jawbone