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Pitting Edema 1+ 2mm or less: slight pitting, no visible distortion, disappears rapidly. 2+ 2-4mm indent: somewhat deeper pit, no readably detectable distortion, disappears in 10-25 seconds. 3+ 4-6mm: pit is noticeably deep. May last more than a minute. Dependent extremity looks swollen and fuller. 4+ 6-8mm: pit is very deep. Lasts for 2-5 minutes. Dependent extremity is grossly distorted.
Nervous System: Twelve pairs of cranial nerves entering and leaving the brain.