BCN Back of book questions Quiz 1

Question 1

What are the 2 main types of cells in the CNS?

Answer 1

Astrocyte

Oligodendrocyte

Question 2

Which cranial structure is a subdural hematoma located?

Answer 2

between dura and arachnoid membrane

Question 3

Which cranial structure is cerebrospinal fluid located?

Answer 3

Sub-arachnoid space (between aracnoid membrane and pia matter

Question 4

Where is an epidural hematoma located?

Answer 4

between dura and the bony wall of the cranial cavity

Question 5

Which type of cell is most likely to involve a tumor originating from myelin-forming cells in the CNS?

Answer 5

Oligodendrocytes

Question 6

What is a common route whereby viruses such as polio or rabies travel to the central nervous system?

Answer 6

Retrograde axonal transport

Question 7

What is the cell most commonly associated with CNS system tumors?

Answer 7

Astrocytes

Question 8

Hemorrhage of an artery on the surface of the brain will result in leakage of blood into what space?

Answer 8

Subarachnoid space

Question 9

Patient complaining of weakness and fatigue during the day, has normal nerve conduction, but with repetitive nerve stimulation is followed by a progressive decrement i the amplitude of muscle contractions due to diminished muscle action potentials is likely to be suffering from what disease?

Answer 9

Myasthenia gravis

Question 10

What does myasthenia gravis come from?

Answer 10

Abnormal postsynaptic response to acetylcholine

Question 11

What are the contents of the spinal epidural space?

Answer 11

loose connective tissue
adipose tissue
internal vertebral venous plexus

Question 12

What are the contents of the dural sac?

Answer 12

enlarged subarachnoid space full of:
CSF
lumbosacral nerve roots that form the cauda equina

Question 13

At what intervertebral articulations are dislocations most likely to occur?

Answer 13

between CV5 and CV6
TV12 and LV1
CV1 and CV2

Question 14

The C* nerve emerges between which of the following vertebrae?

Answer 14

CV7 and TV1

Question 15

The disparity between spinal cord levels and vertebral levels in adults is due to what?

Answer 15

Differential growth or elongation of the spinal cord compared to the vertebral column during development

Question 16

What do spinal denticulate ligaments serve as anatomical landmarks for?

Answer 16

Surgical lesions for treating intractable pain

Question 17

Why might sacral sparing occur following a spinal cord injury?

Answer 17

spinal contusion will result in interior degeneration of the cord, but the peripheral white matter may remain functional

Question 18

What is the difference between communicating and obstructive hydrocephalus?

Answer 18

Obstructive - blockage of CSF flow anywhere in ventricle system
Communicating - disruption of CSF flow through the subarachnoid space and cisterns or across the arachnoid villi

Question 19

A CT of a 55-year old patient involved in an automobile accident revealed calcifications contained within an enlargement of the choroid plexus in the lateral ventricular atrium, the glomus. This structure is what?

Answer 19

Normal

Calcifications frequently appear as white spots in neuroimaging and are normal in the adult brain.

Question 20

A bulge on the medial surface of the occipital horn of the lateral ventricle is formed by what?

Answer 20

calcarine fissure

Question 21

An MRI of a 21-year-old male patient complaining of intense headaches reveals enlargement of the lateral and third ventricles but with a normal-appearing fourth ventricle. The headaches could be the result of an:

Answer 21

Obstructed cerebral aqueduct

Question 22

A 62-year-old male patient with moderate dementia and abnormal involuntary movements undergoes an MRI. The MRI reveals enlargement of the lateral ventricles, especially the frontal horn, and shrinkage of the cortical sulci. The patient’s daughter reports that her father’s father displayed similar abnormal movements. The enlarged frontal horn is strongly suggestive of the patient having what disease?

Answer 22

Huntingtons

-Hereditary big clue

Question 23

The synthesis and absorption of CSF is a dynamic process and is at equilibrium at rates of what?

Answer 23

450-600 mL/day

Question 24

Which cranial nerves attach to the forebrain, midbrain, and hindbrain?

Answer 24

Forebrain = CN I, II
Midbrain = CN III
Hindbrain = rest of them (CN IV-originates in the midbrain but emerges from the superior medullary velum of the pons)

Question 25

Where are the ventricles located?

Answer 25

Lateral are in forebrain
Third is in the diencephalon
4th is in the hindbrain
Cerebral aqueduct is in the midbrain

Question 26

The internal medullary lamina separates which of the following thalamic nuclei?

Answer 26

anterior, lateral, and medial

Question 27

Which of the following is the correct anatomic relationship of the regions or levels of the hypothalamus?

Answer 27

(E) none of the above

=hypothalamus consists of the chiasmatic, infudibular, tuberal, and mamillary regions or levels

Question 28

The most uniform and prominent landmark on the lateral surfaces of the cerebral hemisphere is the?

Answer 28

lateral fissure

Question 29

The paracentral lobule includes parts of what?

Answer 29

frontal and parietal lobes

Question 30

The hypothalamic sulcus demarcates the:?

Answer 30

thalamus from the hypothalamus

Question 31

Only 2 of the four subdivisions of the diencephalon can be seen on the surface of the brain. These are what?

Answer 31

epithalamus and hypothalamus