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Oblique part of cricothyroid: anatomy, location and function

The oblique fibres of cricothyroid, an intrinsic laryngeal muscle. Tilts the thyroid cartilage forward to tense and lengthen the vocal folds, raising pitch.

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Highlighted in the model: Oblique part of cricothyroid. Click any part to read about it, or switch off “Highlight topic” to see the whole body. 3D data: BodyParts3D, © The Database Center for Life Science, CC BY 4.0; meshes simplified and recoloured. The model is an adult male.

Oblique part of cricothyroid at a glance

What it is
The oblique fibres of cricothyroid, an intrinsic laryngeal muscle.
Location
Origin: anterior surface of the cricoid arch. Insertion: inferior horn of the thyroid cartilage.
Function
Tilts the thyroid cartilage forward to tense and lengthen the vocal folds, raising pitch.
Body system
Muscular · paired (left and right)
FMA ID
FMA46614 (Foundational Model of Anatomy)

Key facts

  • Innervation: external branch of the superior laryngeal nerve (CN X)
  • Only intrinsic laryngeal muscle not supplied by the recurrent laryngeal nerve

Structures next to the oblique part of cricothyroid

The nearest named structures in the 3D model, measured from the centre of each part:

References

  1. Foundational Model of Anatomy: Oblique part of cricothyroid (FMA46614). EMBL-EBI Ontology Lookup Service.
  2. OpenStax. Anatomy and Physiology 2e, §11.2 Naming Skeletal Muscles. Rice University, 2022.
  3. Mitsuhashi N. et al. (2009). BodyParts3D: 3D structure database for anatomical concepts. Nucleic Acids Research 37, D782–D785. Data © The Database Center for Life Science, CC BY 4.0.

Related anatomy

Explore the whole body in the interactive 3D human anatomy model, or browse the A–Z list of human structures.