Nuchal lines
Occipital bone. Outer surface.
Side view of head, showing surface relations of bones. (Superior and median lines visible at bottom right.)
Details
Identifiers
Latin	linea nuchae
Anatomical terms of bone [edit on Wikidata]

Thenuchal lines are four curved lines on the external surface of theoccipital bone:

• The upper, often faintly marked, is named thehighest nuchal line, but is sometimes referred to as theMempin line orlinea suprema, and it attaches to theepicranial aponeurosis.
• Below the highest nuchal line is thesuperior nuchal line. To it is attached, thesplenius capitis muscle, thetrapezius muscle,^[1] and theoccipitalis.^[2]
• From theexternal occipital protuberance a ridge or crest, theexternal occipital crest also called themedian nuchal line, often faintly marked, descends to theforamen magnum, and affords attachment to thenuchal ligament.
• Running from the middle of this line is theinferior nuchal line. Attached are theobliquus capitis superior muscle,rectus capitis posterior major muscle, andrectus capitis posterior minor muscle.

• 
  Posterior view of superior nuchal line (labeled in red) and muscles connecting to it.

This article incorporates text in thepublic domain frompage 130 of the 20th edition ofGray's Anatomy(1918)

Wikimedia Commons has media related toNuchal lines.

• "Anatomy diagram: 34257.000-1".Roche Lexicon - illustrated navigator. Elsevier. Archived fromthe original on 2012-07-22.

• Wikipedia articles incorporating text from the 20th edition of Gray's Anatomy (1918)
• Bones of the head and neck

• Articles with short description
• Short description matches Wikidata
• Commons category link is on Wikidata