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Nervous System Exercise

1. The general sensory function of the Nervous System is to
a) brings sensory information together and to integrate the information
b) allows the effectors to respond appropriately
c) use receptors that detect internal and external exchanges

2. What is the functional unit of the nervous system?
a) neuroglia cells
b) schwann cells
c) neurons
d) myelin

3. Which of the following are not classified as neuroglia cells?
a) Schwann cells
b) Astrocytes
c) Oligodendrocytes
d) None of the above

4. Which of the following is not a function of the neuroglia cells?
a) supply blood to the brain and spinal cord
b) fill spaces
c) support neurons
d) hold nerve tissue together

5. The cell membrane become polarized when there is an
a) equal distribution of ions
b) equal distributions of sodium ions
c) unequal distribution of ions
d) unequal distribution of sodium ions

6. A feature of the resting membrane potential is
a) there are more positively charged ions inside the cell
b) there is a higher concentration of sodium outside the cell
c) more negative ions leave the cell than enter the cell
d) the outside of the cell develops a negative charge

7. In order to achieve an action potential, what must happen to the threshold potential?
a) the threshold potential must not be reached
b) the threshold potential must be achieved
c) the threshold is not related to the action potential

8. Which of the following statement is best associated with an action potential?
a) at threshold, the sodium channels open and sodium ions diffuse out of the cell
b) at threshold, the potassium channels open and potassium ions diffuse into the cell
c) the movement of the sodium ions causes the depolarization
d) the movement of the potassium ions causes the depolarization

9. The All-or-none response is 1) a nerve impulse is conducted in an all-or-none manner when a stimulus of threshold intensity is applied to a fiber and 2) all impulses conducted on a fiber are equal in strength
a) true
b) false

10. What is a synapse?
a) the junction between a cell body and a dendrite
b) the junction between a dendrite and an axon
c) the junction between 2 neurons
d) the junction between 2 axons

11. Impulses usually travel from
a) dendrite, axon to cell body
b) dendrite, cell body to axon
c) cell body, dendrite to axon
d) cell body, axon to dendrite


12. Which of the following is not considered to be a neurotransmitter?
a) acetylcholine
b) monoamines
c) peptides
d) sodium ions

13. Reflex behaviour
a) are automatic
b) are conscious responses to changes
c) will only employ the sensory and motor neurons
d) none of the above

14. The spinal cord
a) extends from the brain into the vertebral canal
b) has a cervical, thoracic and lumbar region
c) provides only a one-way communication system between the brain and other body parts
d) a and b
e) a and c


15. The cerebral cortex can be divided into 3 areas
a) sensory, motor and accessory
b) sensory, motor and association
c) sensory, motor and integration


16. Which of the following is not a function of the cerebellum?
a) acts as a reflex center
b) coordinates skeletal muscle movements
c) coordinates smooth muscle movements
d) maintenance of equilibrium


17. The peripheral nervous system
a) includes 12 pairs of cranial nerves
b) includes 31 pairs of spinal nerves
c) can be divided into the somatic and autonomic division
d) all of the above

18. Which of the following structures is not common to all nerve cells?
a) cell body
b) axon
c) dendrite
d) myelin sheath

19. The ion which tends to pass more easily through the cell membrane of nerve cells is
a) potassium
b) sodium

20. When the nerve cell is at rest the concentration of __________ ions is relatively greater on the outside of the cell membrane
a) potassium
b) sodium


21. In which type of fiber is neural impulse conduction faster?
a) myelinated
b) unmyelinated

22. The outer membrane covering the brain is composed of fibrous connective tissues and is called the
a) dura mater
b) arachnoid mater
c) pia mater
d) periosteum


23. Cerebrospinal fluid is found between the
a) arachnoid mater and the dura mater
b) the vertebrae and the meninges
c) the pia mater and the arachnoid mater


24. The spinal cord ends at
a) the sacrum
b) between thoracic vertebrae 11 and 12
c) between lumbar vertebrae 1 and 2
d) at the lumbar vertebrae 5

25. Which one of the following does not belong to one of the major portions of the brain?
a) cerebrum
b) cerebellum
c) corpus callosum
d) brainstem

26. The components of the brainstem does not include
a) diencephalons
b) cerebellum
c) corpus callosum
d) brainstem

27. The hemisphere of the cerebrum are connected by nerve fibers called
a) corpus callosum
b) falx cerebri
c) tissue of Rolando
d) tentorium

28. The thalamus and hypothalamus are parts of the brain located in the
a) midbrain
b) pons
c) medulla oblongata
d) diencephalons


29. Which of the following does not belong to the peripheral nervous system's two divisions?
a) autonomic
b) central
c) somatic


30. Which of the following are responses to stimulation of the parasympathetic nervous system?
a) dilation of bronchioles
b) dilation of coronary arteries
c) contraction of gallbladder
d) increase in blood pressure

31. Which of the following are responses to stimulation by the sympathetic nervous system?
a) increased heart rate
b) increased blood glucose concentration
c) increased peristalsis
d) increased salivation

 

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