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Nervous System Overview

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Questions and Answers

What is the primary function of the nervous system?

To transmit signals between the brain and the rest of the body (correct)

To control the circulatory system

To maintain bone density

To regulate body temperature

Which of the following is NOT a division of the autonomic nervous system?

Parasympathetic nervous system

Motor system

Somatic nervous system (correct)

Sympathetic nervous system

What occurs when the parasympathetic nervous system is stimulated during a massage?

Heart rate increases

Pupils widen

Sweating increases

Feeling of relaxation (correct)

What is the correct sequence of events during the propagation of nerve action potential?

Arrival of AP at the synaptic end bulb, opening of voltage-gated calcium ion channels Signup and view all the answers

Which of the following situations is an example of sympathetic stimulation?

Running away from a quickly unfolding tsunami Signup and view all the answers

What is the effect of nicotine on dopamine?

It releases more dopamine Signup and view all the answers

What is the effect of cocaine on dopamine?

It prevents dopamine in the synaptic gap from being transported back into the pre-synaptic terminal Signup and view all the answers

What is the effect of alcohol on GABA?

It enhances the effect of GABA by binding to its receptor channels Signup and view all the answers

What is the common mechanism of action of various substances that elicit a 'high'?

They act as synthetic neurotransmitters or stimulate the production or uptake of an abnormally high amount of natural neurotransmitters Signup and view all the answers

What are the two types of substances that can affect the nervous system?

Uppers and downers Signup and view all the answers