The Muscular System
What is the function of your tendons?
connect your muscles to your bones
What part of the eye controls how much light enters?
the pupil
What is the colored part of the eye called?
the iris
What organ is the control center of the body?
the brain
What is the function of your bones?
give your body structure
What does the optic nerve do?
brings messages from the eye to the brain
Eyes need this in order to see. It is NOT a body part.
light
Which body part processes information?
the brain
to help the body move
True or false: Your eye color can affect your vision.
False.
Imagine your cornea lens is too far away from your retina. How might this affect your vision? Why?
You could see blurry images because your lens and retina need to be the right distance away from each other inorder to the image to be in focus.
What is the main function of the nervous system?
How do muscles make you move?
They contract. Once they contract they pull on the tendons and bones. This is what moves your bones and body.
True or false: The optic nerve is part of the nervous sysytem.
True - The optic nerve is a sensory nerve.
What part of the eye sends signals down the optic nerve to the brain?
retina
What are the different types of nerves? (200 pts)
Explain the function of each type. (200 pts)
sensory nerves and motor nerves
Sensory nerves receive information from your eyes, nose, mouth, skin, and ears. They send this information to your brain.
Motor nerves bring response information from your brain to your muscles.
What is the difference between voluntary and involuntary muscles?
voluntary mucles - muscles you control (ie: bicep)
involuntary muscles - muscles that work automatically (ie: heart)
What would someone see if they didn't have a retina?
They wouldn't see anything. It would be black.
What might someone see if their cornea lens was very cloudy?
They would like see shadows.
Explain the order of events that would take place in the nervous system if you got home and smelled fresh chocolate chip cookies.
1. Your nose would smell the cookies.
2. Your sensory nerves would carry the message from your nose to your brain.
3. Your brain would process and interpret the message.
4. Your brain would send a message down your motor nerves to your legs, telling them to walk into the kitchen.