The bones of the skeletal system store minerals such as phosphorus and

• sodium

• calcium

• iron

• potassium

All systems, including those of the human body, are composed of smaller parts. Which response shows the correct order, from smallest to largest, in these levels of organization?

• bone cells ---> bones ---> skeletal system ---> tissues

• muscle cells ---> muscle tissues ---> muscular system ---> muscles

• bone cells ---> joints ---> bones ---> skeletal system

• bone cells---> bone tissue---> bone--->skeletal system

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NGSS.MS-LS1-3

Bones that come together at a joint are connected by

• cartilage

• tendons

• ligaments

• blood

Skeletal muscles must work in pairs because

• muscle cells can only pull (contract).

• muscle cells can only push (extend).

• it takes two muscles to move a bone in one direction.

• when muscles work in pairs, they don’t tire as easily.

Muscle cells require massive amounts of energy in order to cause movement. What organelles within muscle cells provide this energy?

• Nucleus

• Chloroplasts

• Mitochondria

• Cytoplasm

Tags

NGSS.MS-LS1-7

Skeletal muscles are attached to bones to allow movement. Skeletal muscles have a striped appearance. Which of the following is true of skeletal muscles?

• Skeletal muscles are an example of cardiac muscle.

• Skeletal muscles are an example of smooth muscle.

• Skeletal muscles are an example of voluntary muscle.

• Skeletal muscles are an example of involuntary muscle.

Which of the following is not a function of the integumentary system?

• protection

• storage

• eliminating waste

• gathering sensory information

The dermis is the thin, outer layer of skin.

• True

• False

The epidermis contains (select all that apply):​

• melanin

• fat

• blood vessels

• all of these

The more melanin your skin has the ____ it will be.

• darker

• tougher

• lighter

• thinner

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4