Reference no: EM13382907

1. On examining the CT scan of a patient who recently suffered from a stroke, the neurologist noted that there is an ischemic lesion affecting one-half of Internal capsule. He further noted that the posture of the patient is paralysis in flexion. Basing on the symptoms listed, what tracts are tract/tracts could have been injured?

   a.   Reticulospinal tract and rubrospinal tract

   b.   Corticospinal tract

   c.   Vestibulospinal tract &tectospinal tract

   d.   Tectospinal tract

   e.   Rubrospinal tract and vestibulospinal tract

   f.   Corticospinal tract &Tectospinal tract

   g.   Corticospinal tract &rubrospinal tract

2. A 50-year-old man was admitted to the emergency room after a head injury resulting from an automobile accident. The patient was diagnosed as having a subarachnoid hemorrhage. Which of the following changes are most likely in the composition of the cerebrospinal fluid of this patient?

   a.   Decreased protein, normal glucose, and presence of a few WBCs

   b.   Increased protein, normal glucose, and presence of RBCs

   c.   Increased protein, decreased glucose, and presence of polymorphonuclear leukocytes

   d.   Decreased protein, normal glucose, and presence of a small number of lymphocytes

   e.   Decreased protein, decreased glucose, and presence of tumor cells

3. Movements of eyes with changes in the position of the head is due to

   a.   Medial vestibular nucleus

   b.   Lateral vestibular nucleus

   c.   Inferior vestibular nucleus

   d.   Superior vestibular nucleus

   e.   Motor nucleus of facial nerve

4. In Huntington's disease, there is a loss of

   a.   Dopamine in the neostriatum

   b.   Substance P in the substantianigra

   c.   GABA in intrastriatal and cortical neurons

   d.   Serotonin in the neostriatum

   e.   Most of the pallidal neurons

5. Inability to shrug and presence of flaccid paralysis of the involved muscle indicates a problem in

   a.   Basilar pons

   b.   Pontine tegmentum

   c.   Midbrain tectum

   d.   Cervical spinal cord

   e.   Lumbo-sacral spinal cord

   f.   Midbrain tegmentum

6. On examining a 66-yr-old male patient, the physician notes that the patient was suffering from bilateral loss of pain and temperature; bilateral loss of crude touch and pressure; bilateral paralysis of muscles; and no loss of vibration, fine touch, and proprioception. He also notes that the muscles supplied by the involved spinal segment are flaccid and those below it are rigid. The possible lesion in this patient is

   a.   Complete transection of cord

   b.   Anterior cord syndrome

   c.   Brown-Sequard syndrome

   d.   Posterior compression of cord

   e.   Central compression of cord

7. In the above patient, which of the following neurotransmitters is most probably responsible for the patient's chronic pain?

   a.   Acetylcholine

   b.   Dopamine

   c.   Norepinephrine

   d.   Substance P

   e.   GABA

8. Problem in which of the following types of nerve fibers can cause a problem in the preganglionic autonomic supply to an organ?

   a.   A  alpha

   b.   A  beta

   c.   A  gamma

   d.   A  delta

   e.   B

   f.   C

9. A patient presents to the hospital with complaints of weakness of limbs with rigidity. X-ray revealed a prolapsed intervertebral disc with lateral compression of cervical spinal cord. The weakness of muscle with spasticity will appear in which of the following orders

   a.   Arms --> trunk --> legs

   b.   Trunk --> legs --> arms

   c.   Legs --> arms --> trunk

   d.   Legs --> trunk --> arms

   e.   Arms --> legs --> trunk

10. Major ascending tracts synapse in which of the following thalamic nuclei?

   a.   Ventral anterior nucleus

   b.   Ventral lateral nucleus

   c.   Ventral posterior nucleus

   d.   Dorsomedial nucleus

   e.   Reticular nuclei

Attachment:- neuroscience.docx