The Nervous System and Homeostasis Test

1. Which would be present in an animal with a nerve network?
   

2.  What is the difference between a neuron and a nerve?

3.  Which organ system is involved in the maintenance of homeostasis in humans?

4.  A neuron that transmits an impulse to the central nervous system after the neuron is stimulated by the environment is called a(n)

5. Which of the following is specifically a part or a function of the central nervous system, CNS?

6.  Effectors include

7.  The part of a neuron that carries nerve impulses toward the cell body is called

8.  Schwann cells make up the

9.  Cells that provide nourishment to neurons are

10. Which one of the following statements is not true about the resting potential?

11.  What happens when a neuron’s membrane depolarizes?

12. The sodium-potassium pump

13.  An action potential is

14. The period in which an axon membrane cannot act is called

15.  “Saltatory conduction” means that the membrane potential changes

16.  Where are neurotransmitter receptors located?

17. A natural pain reliever is

18.  The autonomic nervous system consists of

19.  What part of the brain initiates voluntary movement of the legs to kick a ball?

20.  Which of the following includes all the others?

21.  The corpus callosum connects the

22.  Which of the following is a direct result of depolarizing the presynaptic membrane of an axon terminal?

23. A drug that causes potassium to leak out of a neuron, increasing the positive charge on the outside, would

24.  Why are action potentials usually conducted in only one direction along an axon?

25.  Which of the following structures or regions is incorrectly paired with its function?

26.  A particular disease of the nervous system specifically involves the Ca²⁺ ion channels at the chemical synapses of motor neurons where neurotransmitter is stored and released.  In other words the disease affects the 

27.  What is the difference between a negative feedback mechanism and a positive feedback mechanism?

28.  Which ancestral region of the brain is responsible for modern humans’ speech and ability to do Algebra?

29.  Alex becomes so dehydrated while playing tennis that his blood pressure starts to drop. His _____ detects the drop in pressure and sends signals via _____ to speed up the heart to compensate.

30. A physician friend of yours tells you about a patient with a head injury who suddenly stopped breathing during the examination. What portion of the brain was probably injured?

31.  Refer to the graph below

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31.  The active ingredients in many nerve gases belong to a class of chemicals called anticholinesterases.  Suggest a posible synaptic mechanism to explain how these chemicals can damage and animal’s nervous system.