Mystery Science The Human Machine

The ______________ is the frame or structure of our body just as steel beams are the frame or structure of a building.

• brain

• legs

• skeleton

• arms

The "moving places" that connect our many bones are called ____________.

• joints

• tendons

• strings

• knuckles

__________ are the "strings" that attach to the bones in a human body. They are much like the strings that make the robot hand move.

• ligaments

• bones

• muscle

• tendons

To move our body parts, we have __________ that attach to the tendons which then move the bone.

• skin

• muscles

• strings

• capallaries

What are the two main reasons people are considered blind?

• damage to the iris or white part

• damage to the retina or cornea lens

• damage to the cornea lens and iris

• damage to the retina and white part

Why do people have blurry vision and have to wear glasses?

• their eyes are foggy and need cleared out

• the iris is too narrow

• the retina is too close or too far from the pupil

• the pupil doesn't adjust like it's supposed to in light and dark

The retina is attached to a "cord" called a ________________.

• nerve

• sting

• extension

• tendon

When the room gets dark, your pupils get ______________ to let in more _____________.

• small; light

• big; color

• small; color

• big; light

Sometimes when we take photographs with a flash, we may get "red-eye" in the picture. Why is that?

• our iris turns red

• the blood vessels reflect the iris color

• the blood vessels reflect the light

• the white part of our eyes reflect the light

Why can nocturnal animals see better in the dark than humans?

• they are just luckier than us

• their pupils get smaller

• their pupils disappear

• their pupils get larger

Tags

NGSS.MS-LS4-4