Chapter 21: Nervous System

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Figure 1

Refer to Figure 1 for the next 5 questions

1. Which number corresponds to the part of the brain that connects the right and left hemisphere?
1. 1
2. 2
3. 5
4. 6
2. Which number corresponds to the part of the brain that processes incoming sensory impulses and sends them to the cortex?
1. 1
2. 2
3. 6
4. 7
3. The cerebrum consists of which four numbers?
1. 2, 6, 7, 4
2. 1, 5, 6, 8
3. 2, 4, 5, 6
4. 1, 3, 7, 8
4. Which number corresponds to the protective membrane filled with cerebrospinal fluid covering the brain and the spinal chord?
1. 2
2. 3
3. 4
4. 8
5. In order to create a bridge between the nervous system and the endocrine system, ___ maintains homeostasis in the body, and thus stimulates ___ to secrete the hormones into the body. (What are the numbers respectively)
1. 5,6
2. 2,6
3. 3,4
4. 6,7

6. Which of the following does the left hemisphere of the brain not control?

a) Language

b) Speech

c) Visual processing

d) Math

7. Which region of the brain coordinates balance + voluntary muscle movements?

a) Cerebral Cortex

b) Cerebellum

c) Brain stem

d) Cerebrum

8. Which of the following is not of the neuron’s function?

a) Determine what part of cerebral cortex the sensory impulses need to go to

b) Respond to chemical and physical stimuli

c) Release chemical regulators

d) Conduct electrical impulses

9. What is the specific purpose of the myelin sheath around axons of vertebrate neurons?

a) To mimic neurotransmitters

b) Cause muscle cells to contract and glands to secrete

c) Transmit nerve impulse from presynaptic to postsynaptic cell

d) Make impulse transmission ten times faster

10. Which of the following does the lethal nerve poison, tetrodotoxin, specifically affect?

a) Potassium channels

b) Hydrogen channels

c) Sodium channels

d) Neurotransmitters

11. You are at the doctor’s office and he hits your knee. Your leg automatically and involuntarily jerks your leg up. This reflex involved all of the following EXCEPT:
1. Sensory neuron
2. Effector organ
3. Motor neuron
4. Cerebral cortex

12. You are at a party and your date hands you a drink (your date has put a psychoactive drug in the drink that you are unaware of). After you finish the drink your motor skills become less active. Your synaptic transmission has been inhibited. Which one of the following drugs was most likely in your drink?
1. Nicotine
2. Alcohol
3. LSD
4. Caffeine

13. You have recently been in a terrible car accident and the left side of your body was paralyzed. Which one of the following would you most likely NOT be able to do?
1. Remember how to speak French
2. Take a math test correctly
3. Walk up steps
4. Take a grammar test

14. You are a cross country runner and preparing for the Olympics. While running, your legs move one in front of the other in a continuous motion. All of the following are involuntary actions that would occur EXCEPT:
1. You begin to run as soon as you hear the bell
2. Opposing leg muscles take turns flexing and relaxing.
3. Heart rate speeds up
4. You start to sweat and breathe heavier.

15. More then one half of the weight of the nervous system is made up of:
1. Ganglia
2. Glial cells
3. Schwann cells
4. Interneurons

16. The Somatic Nervous System...
1. is responsible for involuntary responses
2. consists of the brain and spinal chord
3. is responsible for most skeletal muscle contraction
4. maintains homeostasis in the body

17. The part of your Central Nervous System known as the primitive brain is...
1. The sensory neurons
2. occipital lobes
3. medulla
4. motor cortex

18. Signals in a neuron travel from
1. axon to cell body to dendrite
2. cell body to myelin sheath to synapse
3. synapse to axon to cell body
4. dendrite to cell body to axon

19. _____, which transmit signals from one neuron to another within the CNS, are the most abundant type of neuron in vertebrates
1. interneurons
2. ganglia
3. nodes of Ranvier
4. glial cells

20. What is the protective membrane that covers the brain and spinal chord?
1. Central Nervous System
2. Meninges
3. Thalamus
4. Neuron

21. What type of neuron sends a message away from the CNS and to the effector organ?
1. Motor Neuron
2. Interneuron
3. Sensory Neuron
4. Brain Neuron
5. None of the above

22. What is the region located between two adjacent nerve cells?
1. Dendrite
2. Cell Body
3. Axon
4. Synapse

23. What features are included with the Peripheral Nervous System?
1. Brain and Motor Neurons
2. Spinal Chord and Brain
3. Sensory Neurons and Motor Neurons
4. Sensory Neurons and Spinal Chord

24. What is not a function of a neuron?
1. Respond to chemical and physical stimuli
2. Release chemical regulators
3. Process foreign stimuli
4. Conduct impulses

25. The autonomic nervous system deals with which of the following?
1. involuntary control
2. voluntary muscular movement
3. the transmission of sensory information
4. involuntary and voluntary control

26. The two major components of the central nervous system are protected by what?
1. the skull
2. meninges and the skull
3. cerebrospinal fluid
4. all of the above

27. Multiple sclerosis is an autoimmune disease. It is responsible for the destruction of:
1. pancreatic cells
2. nodes of Ranvier
3. Schwann cells
4. Lamina

28. At resting potential, the charge within the neuron is ____, and the charge outside of the neuron is _____. _____ and ______ ions are responsible for balancing the electric charge of the neuron.
1. positive, negative, chlorine, potassium
2. positive, negative, potassium, sodium
3. negative, positive, potassium, sodium
4. negative, negative, glycogen, sodium

29. The hypothalamus serves as a "bridge" between which two systems?
1. nervous system and lymphatic system
2. nervous system and endocrine system
3. nervous system and circulatory system
4. none of the above

30. The nervous system is divided into what two main divisions?
1. Sensory division and motor division
2. Spinal cord and brain
3. Central nervous system and peripheral nervous system
4. Autonomic nervous system and Somatic nervous system

31. What is the name of the elongated part of a neuron which an impulse is transmitted through?
1. Nucleus
2. Axon
3. Dendrites
4. Synapse

32. Where is pain sensed?
1. Brain
2. Sensory receptors
3. Motor neurons
4. Sensory neurons

33. Which part of the Brain regulates involuntary movements?
1. Cerebrum
2. Cerebellum
3. Hypothalamus
4. Pituitary Gland

34. Which of the following statements are false

1. the pituitary gland is part of the endocrine system
2. the corpus callosum controls coordinated movements
3. the brain is made of 100 billion neurons
4. the right hemisphere controls visual processing

35. What is the importance of the interneuron?

1. It is vestigial
2. It measures body composition
3. It is a bridge between the neurons and Central Nervous System
4. It is the branched ends of the neuron that receive stimuli

36. Which of the following is NOT needed for nerve impulse transmission?

1. A selectively permeable membrane
2. Chemical potential
3. Sodium
4. Potassium Isotope

37. Which of the following is a characteristic of a reflex arc?

1. An automatic response
2. Takes a “u-turn”
3. Muscle movement occurs prior to brain response
4. Uses sensory neurons
5. All of the above

Answer Key

1. C
2. B
3. C
4. B
5. D
6. C
7. B
8. A
9. D
10. C
11. D
12. B
13. C
14. A
15. B
16. C
17. C
18. D
19. A
20. B
21. A
22. D
23. C
24. C
25. A
26. D
27. C
28. C
29. B
30. C
31. B
32. A
33. B
34. B
35. C
36. D
37. E

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