neuro - mid exam (difficult quesions)

Question 1

clinical a neurological disorder characterized by the inability to recognize faces.

Answer 1

Prosopagnosia aka -face blindness -facial agnosia.

Question 2

clinical -lack of muscle control -or coordination of voluntary movements such as walking or picking up objects usually results from damage to the part of your brain that controls muscle coordination (cerebellum).

Answer 2

Ataxia

Question 3

what is the - cerebro/cerebellum

Answer 3

-comprising the two lateral regions of the cerebellar hemispheres - communicates with the cerebral cortex - involved with planning and initiating movement.

Question 4

People with this condition initially experience problems with 1. coordination and balance (ataxia) 2. speech and swallowing difficulties 3. muscle stiffness (spasticity) 4. weakness in the muscles that control eye movement (ophthalmoplegia).

Answer 4

spino/cerebellar ataxia (SCA)

Question 5

dorsal spino/cerebellar pathway :

Answer 5

spinal cord and terminating in the same side (ipsilateral) of the cerebellum. The dorsal spinocerebellar tract aka - posterior spinocerebellar tract - Flechsig’s fasciculus - Flechsig’s tract conveys -proprioceptive information (from skeletal mus and joints) to the cerebellum.

Question 6

spino/cerebellar pathway dorsal vs ventral info for.. runs.. how many neurons inv.. decussate?..

Answer 6

The ventral spinocerebellar tract conveys -proprioceptive information from the body to the cerebellum. It is part of the somatosensory system and - runs in parallel with the dorsal spinocerebellar tract. Both these tracts involve -two neurons. The ventral spinocerebellar tract will - cross to the opposite side of the body first in the spinal cord as part of the - anterior white commissure - and then cross again to end in the cerebellum (referred to as a “double cross”), vs dorsal spinocerebellar tract - does not decussate, at all

Question 7

locate

• middle cerebellar peduncle
• 4th ventrical

Answer 7