Order Central and Peripheral Nervous Systems

Order Central and Peripheral Nervous Systems
Order 59550698
Order Central and Peripheral Nervous Systems
1. After performing an interscalene block, your patient complains of pain in his
fourth and fifth digits. Which dermatomes are not adequately covered with an
interscalene block?
A. C5-C6
B. C6-C7
C. C7-C8
D. C8-T1
2. During neuraxial blockade, the level of sympathetic blockade is generally how
far away from the sensory level?
A. 1-2 dermatomes above
B. 4-6 dermatomes above
C. 1-2 dermatomes below
D. 4-6 dermatomes below
E. 0 dermatome change
3. During neuraxial blockade, the level of sensory blockade, in general, is how
many dermatomes away from the level of motor blockade?
A. 0
B. 2
C. 4
D. 6
E. 8
Order Central and Peripheral Nervous Systems
4. Cutaneous infiltration of a local anesthetic to block the intercostobrachial
nerve provides anesthesia to which dermatome(s)?
A. C7
B. C8
C. T1
D. T2
5. 5. Each respiratory center is correctly paired with its function EXCEPT which
one of the following?
A. Dorsal respiratory center: provides ventilatory rate
B. Ventral respiratory center: coordinates exhalation
C. Apneustic center: prolongs exhalation via signals to ventral respiratory center
D. Pneumotaxic center: limits inspiration
6. All of the following are examples of reflex or higher cortical structures that
exert an influence on the respiratory centers/control of respiration EXCEPT
which one?
A. Cough reflex
B. Hering-Breuer reflex
C. Reticular activating system
D. Bezold-Jarisch reflex
7. Carotid body chemoreceptors communicate with the respiratory centers via
which nerve?
A. Trigeminal
B. Glossopharyngeal
C. Vagus
D. Hypoglossal
8. An infarct involving the hypothalamus would most likely result from occlusion
of which artery?
A. Anterior spinal artery
B. Vertebral artery
C. Anterior cerebral artery
D. Middle cerebral artery
E. Posterior cerebral artery
9. Regarding the gray matter in the spinal cord, all of the following are correct
EXCEPT which one?
A. Consists of neurons, neuronal processes, and neuroglia
B. Butterfly or H-shaped
C. Categorized into columns and laminae
D. Ratio of gray to white matter is least at the cervical and lumbar regions
E. Each of the 10 Rexed laminae involved in sensory or motor pathways
10. Which of the following pathways carries fibers that control fine touch,
vibration, proprioception, and pressure?
A. Dorsal column
B. Spinothalamic
C. Corticospinal
D. Reticulospinal
Order Central and Peripheral Nervous Systems
11. All of the following are true regarding the descending motor tracts EXCEPT
which one?
A. They originate in either the cerebral cortex or brainstem.
B. The pathways are generally made of a two-neuron system.
C. The upper motor neuron fibers target lower motor neurons of the spinal cord or
cranial nerves.
D. They are involved in assisting with voluntary movement.
12. 12. Which of the following pathways carries fibers that are involved in pain and
temperature sensation?
A. Dorsal column
B. Spinothalamic
C. Corticospinal
D. Reticulospinal
13. The main functions of the meninges include all of the following EXCEPT which
one?
A. Protecting the brain and spinal cord from mechanical injury
B. Providing blood supply to the skull and to the hemispheres
C. Providing a space for the flow of cerebrospinal fluid (CSF)
D. Producing cerebral spinal fluid
14. Which layer of the meninges is pain sensitive?
A. Dura
B. Pia
C. Arachnoid
D. Subarachnoid
15. What is the potential space between the arachnoid and pia mater?
A. Epidural
B. Subarachnoid
C. Subdural
D. Arachnoid
16. What is the potential space between the dura and arachnoid mater?
A. Epidural
B. Subarachnoid
C. Subdural
D. Arachnoid
17. Cerebral perfusion pressure (CPP), in the absence of intracranial pathology, is
MOST closely correlated with which parameter?
A. Intracranial pressure (ICP)
B. Central venous pressure (CVP)
C. Cerebral blood volume (CBV)
D. Mean arterial blood pressure (MAP)
18. Which of the following situations has the least significant effect on cerebral
blood flow (CBF)?
A. PaCO2 of 80
B. Temperature of 34°C
C. Increased blood viscosity
D. Acute metabolic acidosis
19. 19. The diagram below shows the autoregulation curve for CBF. Which of the
following changes occurs in patients with long-standing hypertension?
(From Dagal A, Lam AL. Anesthesia for neurosurgery. In: Barash PG, Cullen BF, Stoelting RK, et
al. Clinical Anesthesia. Philadelphia: Lippincott Williams and Wilkins; 2013:999, with permission.)
A. Leftward shift
B. Rightward shift
C. Downward shift
D. No change
20. In regard to cerebral blood flow (CBF), cerebral metabolic rate (CMR), and
volatile anesthetics, which of the following is a potential detrimental adverse
effect?
A. Increase in blood flow and a decrease in metabolic demand
B. Increase in ICP
C. Redistribution of blood flow away from ischemic areas of brain
D. Decreased formation of cerebral spinal fluid
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