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vocal cord/fold/shelf (Ferrein cords, true vocal cord)

Structure: The sharp-edged fold of mucous membrane overlying the vocal ligament. - stretch along either wall of the larynx from the angle between the thyroid lamina to the vocal process of the arytenoid cartilage - air passing through the glottis causes the vocal folds to vibrate, producing sound. The frequency of the vibrations & the pitch of the sound produced depends on the tension on the vocal cord. The pitch of the voice is regulated by moving the arytenoid cartilages Function: - control sound production - serves as the main inspiratory sphincter of the larynx when they are tightly closed

Related

vestibular/ventricular fold (false vocal cord, ventricular band of larynx) vocal cord dysfunction; inducible laryngeal obstruction vocal cord paralysis vocalis muscle

General

respiratory system structure

References

  1. Stedman's Medical Dictionary 27th ed, Williams & Wilkins, Baltimore, 1999.
  2. Human Anatomy and Physiology, Alexander P Spence & Elliot B. Mason, The Benjamin/Cummings Publishing Company, Inc, 1979.
  3. Clinically Oriented Anatomy, 4th edition, KL Moore & AF Dalley (eds), Lippincott Williams & Wilkins, Philadelphia, PA 1999.
  4. Medical Knowledge Self Assessment Program (MKSAP) 11, American College of Physicians, Philadelphia 1998

Component-of

larynx

Images

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