Share 4th Grade Human Machine Review
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Why do our pupils get larger in a dark room?
to let in more light so we can see
Which part of our eye acts like a screen?
retina
What are the strings called that connect our muscles and bones?
tendons
The brain sends a message with the ________ to the rest of the body.
nerves
What kind of animals sleep during the day and are most active at night?
nocturnal animals
What is a pupil?
The dark hole in the center of the eye
What would happen if we didn't have bones?
We couldn't move and we wouldn't be able to stand up.
What causes people to have blurry vision?
Their retina is too close or too far away from their cornea lens.
What comes next after: "the senses send messages to the brain"
the brain makes a decision and thinks
Describe what happens in the body step by step when a mouse sees a cat
the mouse's eyes see the cat and send a message to the brain, the brain decides to move and sends a message to the leg muscles, the mouse runs away
What part of the eye is in the front?
cornea lens
Nocturnal animals have __________ white in their eyes, unlike humans.
none or little
When an owl catches prey, what is the next step directly after the sensory nerves send the message from the eyes to the brain?
the brain sends a message along the motor/movement nerves to the muscles
Which part of the body makes us move: bones, muscles, tendons?
muscles
Name one thing our brains do
makes decisions, stores memories, holds our emotions
What is the difference between human eyes and a nocturnal animal's eyes?
human eyes have smaller pupils and no reflective layer
