| vocabulary | ||
| #1 | what is the central nervous system made up of? |
the brain and the spinal cord |
| #2 | what comes out of the body that are finger like branches ? |
Dendrites Fact: a single nerve cell can have 50,000 dendrite branches |
| #3 | what do the axon do |
conducts electrical impalses away from the nerons cell body |
| #4 | their are 100 billion nerve cells in bundles called? |
nuerons |
| #5 | the cell body looks like a blob with an eye called? |
nucleus |
| The four systems | ||
| #1 | what system monitors function and movement? |
the voluntary nervous system |
| #2 | this system controls movement of the heart, the stomach, intestine, and the glands what is this system called? |
the Autonomic Nervous System |
| #3 | what system comunicates with the rest of the systems through electrical signals? |
the Central Nervous System |
| #4 | contains both sensory and motor nerves what is this system called? |
the Peripheral Nervous System |
| #5 | when you are under stress what nervous system is affected? |
the autonomic nervous system |
| the 5 sences | ||
| #1 | high in the back fo your _______ a patch of tissue grows hair like fibers what is the sense? |
nose smell |
| #2 | what does sight do? |
captures light and help turn it into an image, prossessed by the brain |
| #3 | your eyes perceive light wave, but your ______ perceive and interprets a different type of stimulas called? |
ear sound waves |
| #4 | your ______ is covered with small sensory structures called _________? |
tongue taste buds |
| #5 | the sense of ________ depends on tiny sensory receptors in the skin |
touch |
| The Brain | ||
| #1 | how many nerve cells does an average adult contain in the brain? |
nearly 100 billion nerve cells |
| #2 | what are the 100 billion nerve cells called? |
neurons |
| #3 | what does the brain directly control? |
voluntary movement |
| #4 | name two voluntary behaviors |
walking and thinking |
| #5 | name one of the involuntary responses the body also controls name one |
|
| spinal cord | ||
| #1 | the spinal cord is ________ long |
44cm long |
| #2 | the spinal cord weighs ________ grams |
about 34-40 grams |
| #3 | what is the spinal cord protected by and supported by? |
the vertebal colum, made of small bones called vertebrae |
| #4 | the spinal cord has ________ layers of tube with an outer layer of nerve fibers wrpped in tissue |
2 the spinal cord is douple-layered |
| #5 | connected to the spinal cord are how many pairs of nerves? |
31 pairs of nerves |
| Final Question | |