APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -Parkinson’s disease is a progressive disorder that is caused by degeneration of nerve cells in the part of the brain called the substantia nigra, which controls movement. These nerve cells die or become impaired, losing the ability to produce an important chemical called dopamine.

Detailed explanation-2: -Ataxia describes poor muscle control that causes clumsy voluntary movements. It may cause difficulty with walking and balance, hand coordination, speech and swallowing, and eye movements. Ataxia usually results from damage to the part of the brain that controls muscle coordination (cerebellum) or its connections.

Detailed explanation-3: -Coordination disorders often result from malfunction of the cerebellum, the part of the brain that coordinates voluntary movements and controls balance. The cerebellum malfunctions, causing loss of coordination.

Detailed explanation-4: -The cerebellum develops from the metencephalon and lies posteriorly to the pons and medulla. This part of brain is concerned with coordination of movement, maintenance of muscle tone and equilibrium.