Crash Course The Nervous System

Tim says that the brain contains an "intricate network" of neurons. What is the best synonym for "intricate"?

• small
• complex
• simple
• massive

What might happen if your body lacked neurotransmitters?

• nerves could not communicate
• impulses could not travel along nerves
• you would not be able to touch objects around you
• nerve cells would begin dying off

How are neurotransmitters different from the impulses that travel along the bodies of nerve cells?

• Impulses are electrical; Neurotransmitters are chemical

• Impulses travel much faster than neurotransmitters.

• Impulses send signals from body to brain; Neurotransmitters send signals from brain to body

• Impulses occur constantly; Neurotransmitters are released only occasionally

Which process is goverened by the autonomic nervous system?

• writing
• chewing
• running
• digesting food

Which of the following is an example of a reflex?

• drinking water
• reaching out to touch a hot object
• blinking
• throwing

Which is true?

• your brain is involved in all the actions your body performs
• the nerves are connected together tightly
• there are gaps between many of the nerve cells in your body
• the somatic nervous system allows you to feel hot and cold sensations

If an area of your body is sensitive, what can you conclude?

• it contains more skin cells than other areas
• it contains more nerve endings than other areas
• it conducts electricity better than other areas
• it contains more neurotransmitters than other areas

Where in your body can you find nerve cells?

• brain
• spinal cord
• neurons
• everywhere

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A disorder called CIPA prevents people from feeling pain. What can you infer about these people?

• they are capable of amazing feats of strength
• they can injure or burn themselves without realizing it
• their brains do not function properly so they can't think clearly
• they tend to live extremely long lives

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What can you infer about the difference between the autonomic and somatic nervous systems?

• Somatic information is transmitted by nerve cells; Autonomic information is transmitted by neurons.

• Somatic information is transmitted by neurons; Autonomic information is transmitted by nerve cells.

• Most somatic information functions are controlled by spinal cord: most autonomic information functions are controlled by the brain

• Most somatic information functions are controlled by the brain; most autonomic information functions are controlled by the spinal cord