Semester 2 Neuro, Week 2 - Fundamentals, Meninges, Ventricles And Csf
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- 1.Which of the following statements are correct about neurons whose cell bodies are located in dorsal root ganglia?
- A.
They are cranial nerve cells
- B.
They are multipolar neurons
- C.
They have both peripheral and central nervous system components
- D.
They are pseudo-unipolar neurons
- E.
They are derived from the neural tube
- F.
More than one above
- G.
None of the above
- 2.A pregnant mother has a routine ultrasound to determine the sex of her baby. The doctor informs her that the baby is anencephalic. Which of the following statements are most characteristic of anencephaly?
- A.
Results from failure of caudal neural tube closure
- B.
Can often be treated successfully with surgery
- C.
Associated with no change in alpha-fetoprotein
- D.
Newborns with this condition may still display reflex activity
- E.
Results from neural tube closure deficits in the second trimester
- 3.A 52-year old female suddenly complained of experiencing her worst headache. She subsequently collapsed and was carried to the ER. A lumbar puncture was performed which suggested subarachnoid hemorrhage. Which of the following is most likely to be seen?
- A.
Decreased protein, decreased glucose and tumor cells
- B.
Decreased protein, decreased glucose and red blood cells
- C.
Increased protein, decreased glucose and white blood cells
- D.
Increased protein, normal glucose and red blood cells
- E.
Increased protein, increased glucose and white blood cells
- 4.A 3-month old child was treated for an ear infection, however her mother has noted that the child is irritable and prefers dim light. She brings her back to the hospital where she was admitted following physical examination. A lumbar puncture is done which revealed increased proteins, decreased glucose levels, increased WBCs with increased polymorphs. Based on the findings in this patient, she most likely has
- A.
Viral meningitis
- B.
Bacterial meningitis
- C.
Subarachnoid hemorrhage
- D.
Intracerebral hemorrhage
- E.
No infection
- 5.During examination at clinic, it was noted that the size of an infant's head was larger than normal expected for her age. Radiological examination indicated that there is obstruction of the medial foramen draining the fourth ventricle. What is the name of this foramen?
- A.
Cerebral aqueduct
- B.
Interventricular foramen
- C.
Foramen of Megendie
- D.
Foramen of Monro
- E.
Foramen of Luschka
- 6.If the Foramen of Megendie is obstructed, which of the following would occur?
- A.
Non-communicating hydrocephalus
- B.
Communicating hydrocephalus
- C.
Subdural hematoma
- D.
Epidural hematoma
- E.
Subarachnoid hemorrhage
- 7.A 75-year old man develops a tumor in his cerebral aqueduct, leading to a non- communicating hydrocephalus. Which finding below is most likely in this man?
- A.
A shift of the cranial contents in a superior and lateral direction
- B.
The development of an unusually large head circumference
- C.
An enlargement of the subarachnoid space
- D.
The development of an unusually small head circumference
- E.
A shift of the cranial contents in an inferior and medial direction
- 8.Cerebrospinal fluid is returned directly to the venous system by means of the:
- A.
Cerebral veins
- B.
Choroid plexus
- C.
Cerebral aqueduct
- D.
Arachnoid villi
- E.
Apertures in the third ventricle
- 9.A 42-year old woman is suffering from chronic headaches. A CT reveals a tumor in her 4"-' ventricle and enlargement of all ventricles. Under normal conditions which of the following is characteristic of CSF flow?
- A.
The CSF flows from the 4ch ventricle to the cistern magna via the median aperture
- B.
The CSF flows from the lateral ventricles to the 3rd ventricle via the cerebral aqueduct.
- C.
The CSF flows from the 3rd to 4th ventricle via the foramen of Monroe
- D.
The CSF flows from the lateral ventricles to the 4th via the foramen of Luschka
- E.
The CSF flows from the ducal sinuses to the subarachnoid space via the arachnoid
- 10.A 25-year old woman suffers head injuries from an automobile accident. Her MRI reveals an epidural hematoma. Between which two structures has blood accumulated?
- A.
Between the arachnoid and the pia mater.
- B.
Between the dura and the pia mater.
- C.
Between the dura and the arachnoid layer.
- D.
Between the pia and sub arachnoid layer.
- E.
Between the skull and the dura.
- 11.A 2-year old child presents with hydrocephalus due to a tumor in her fourth ventricle. Under normal conditions the CSF flows from the 4th ventricle to the cistern magna via which foramen?
- A.
The left foramen of Luschka
- B.
The foramen of Megendie
- C.
The right foramen of Luschka
- D.
The foramen of Monroe
- E.
The left Interventricular foramen
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