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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Lower Elementary Science
2.13 The Skeletal System


Q 1: The bones, or vertebrae, of your spinal column surround your spinal cord, a complex bundle of nerves.
true
false

Q 2: Like other cells in your body, the bone cells rely on blood to keep them alive. Blood brings them food and oxygen and takes away waste.
true
false

Q 3: What is the longest bone in your body?
the stirrup in the ear
thigh bone or the femur
bone marrow

Q 4: When you were born you had over 300 bones. As you grew, some of these bones began to fuse together. So, an adult has only 206 bones.
true
false

Q 5: ____ system forms the shape or the body, and protects the internal organs. It works closely with the muscular system to allow us to move.
Respiratory
Digestive
Skeletal

Q 6: Many bones are hollow. Their hollowness makes bones strong and light. Bone marrow present in the center of many bones makes ________.
oxygen
food
blood cells

Q 7: ______ is a series of fused bones, that acts like a hard protective helmet for your brain.
Thigh bone
Skull
Backbone

Q 8: Bones are hard, but they can break, such as when a person takes a bad fall. Doctors can fix most broken bones. They use ______ machine to take pictures of the bones through the skin.
a z-ray
an x-ray
a y-ray

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Question 10: This question is available to subscribers only!


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