Chapter 28: CNS

Chapter 28: CNS

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

MULTIPLE CHOICE

1. Fetal alcohol syndrome is most often characterized by which of the following disorders?
2. Encephalocele
3. Anencephaly
4. Macrogyria
5. Microencephaly
6. Lissencephaly

ANS: D, Fetal alcohol syndrome is often associated with microencephaly, which accounts for mental retardation in these children.

2. Posttraumatic hydrocephalus is most often caused by which of the following?
3. Hypersecretion of cerebrospinal fluid
4. Obstruction of the aqueduct
5. Obstruction of the foramen of Luschka
6. Obstruction of the foramen of Magendie
7. Obstruction of cerebrospinal fluid absorption

ANS: E, Posttraumatic hydrocephalus is caused by an obstruction of cerebrospinal fluid resorption caused by hemorrhage into the subarachnoid spaces.

3. Which of the following is the most common source of septic thromboemboli in the cerebral arteries?
4. Leg veins
5. Pulmonary veins
6. Heart
7. Aorta
8. Carotid arteries

ANS: C, The heart is the most common cause of septic thromboemboli. Such emboli originate from the infected vegetations found on the valves in endocarditis.

4. Which of the following is the dominant protein component of neuritic plaques in the brain in Alzheimer disease?
5. Apoprotein ε
6. Tau protein
7. Neurofibrillin
8. Microtubules-associated protein 2 (MAP2)
9. Ab derived from amyloid precursor protein (APP)

ANS: E,  The Ab protein derived from amyloid precursor protein (APP) is the dominant protein in neuritic plaques of Alzheimer disease.