The development of atherosclerosis is a process of sequential events. Arrange the pathophysiological events in order of occurrence. Place the first event on top, and the last on the bottom.

Intermittent claudication is a common symptom experienced by individuals with peripheral artery disease (PAD). It occurs due to the underlying pathophysiology of arterial occlusion and ischemia during physical activity. Here's why option C is the correct choice:

A) Reduced blood flow occurs when legs are elevated:

This statement is not accurate regarding the pathophysiology of intermittent claudication in PAD. When legs are elevated, gravity assists venous return, which may actually improve blood flow temporarily. However, intermittent claudication occurs during activity, not when the legs are elevated.

B) Reddened color occurs when the feet are dependent:

This statement is unrelated to the pathophysiology of intermittent claudication. Redness when the feet are dependent may suggest venous insufficiency rather than arterial occlusion characteristic of PAD.

C) Arterial occlusion causes ischemic pain during activity:

Correct. Intermittent claudication is caused by inadequate blood flow to the muscles during physical activity due to arterial occlusion in PAD. As the demand for oxygen increases during exercise, the narrowed arteries cannot supply sufficient blood flow, leading to ischemic pain in the affected muscles. This pain typically resolves with rest and recurs upon resuming activity.

D) Reduction in blood supply leads to muscle atrophy:

Muscle atrophy may occur in severe cases of PAD with chronic ischemia, but it is not the primary cause of intermittent claudication. Intermittent claudication is primarily attributed to inadequate blood flow during activity, which results in ischemic pain rather than muscle atrophy.

Parkinson's disease (PD) is a neurodegenerative disorder characterized by the progressive degeneration of dopaminergic neurons in the substantia nigra of the basal ganglia. This degeneration leads to a deficiency of dopamine, a neurotransmitter involved in the regulation of movement and coordination. The inability to express oneself, as seen in the client's mumbling, can be attributed to the motor symptoms of PD, particularly bradykinesia (slowness of movement) and hypomimia (reduced facial expression), which result from dopaminergic neuron degeneration.

A) Damage to Broca's area in the temporal lobe of the brain:

Damage to Broca's area typically results in expressive aphasia, which is characterized by difficulty speaking and forming coherent sentences. While speech difficulties can occur in PD, they are primarily due to motor dysfunction rather than damage to specific language centers in the brain.

B) Degeneration of dopaminergic neurons of the basal ganglia:

Correct. Degeneration of dopaminergic neurons in the basal ganglia, particularly the substantia nigra, is the primary pathological factor in Parkinson's disease. This degeneration leads to motor symptoms such as bradykinesia, tremor, and rigidity, which can affect the client's ability to speak clearly and express himself.

C) Brain atrophy with diffuse amyloid plaques disposition:

This description is more characteristic of Alzheimer's disease, a different neurodegenerative disorder characterized by brain atrophy and the deposition of amyloid plaques. While cognitive impairment can occur in PD, the primary motor symptoms are related to dopaminergic neuron degeneration rather than amyloid plaque deposition.

D) Paralysis of the pharyngeal and epiglottal area:

Paralysis of the pharyngeal and epiglottal area can lead to dysphagia (difficulty swallowing) rather than difficulty expressing oneself verbally. While dysphagia can occur in PD, it is not typically the primary factor contributing to speech difficulties in this condition.