Share 4° SCIENCE REVIEW 1st TERM
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What are the three main functions of the human skeleton?
Support, give shape, and protect organs.
What are the three main parts of the skeleton?
Head, torso, and limbs.
Mention the 3 types of bones (s)
Short bones Example: Hands or feet.
Mention the 3 types of bones (f)
Flat bones Example: Skull or ribs.
Mention the 3 types of bones (l)
Long bones Example: Arms or legs.
Which bones protect your heart and lungs?
The ribs (or rib cage).
The muscular system is made up of ______ and ______.
muscles and tendons.
______ connect muscles to bones.
Tendons.
Muscles work in ______.
pairs.
When one muscle __________ (gets shorter), the other one __________ (gets longer).
contracts, relaxes.
When you bend your arm, your ______ muscle contracts.
biceps.
Scientists classify animals into two big groups: ______ and ______.
Vertebrates, Invertebrates.
An ______ is a hard covering that protects the soft bodies of some invertebrates.
exoskeleton.
Crabs, spiders, and insects belong to the invertebrate group called ______.
Arthropods.
Snails and clams belong to the invertebrate group called ______.
Mollusks.
Many mollusks have a ______.
shell.
