The cricothyroid ligament is composed of two parts: the median cricothyroid ligament along the midline and the lateral cricothyroid ligaments on each side. The median cricothyroid ligament is a flat band of white connective tissue that connects the front parts of the contiguous margins of the cricoid and thyroid cartilages, it is a thick and strong ligament, narrow broad below. Each lateral ligament is known as the conus elasticus; the lateral cricothyroid ligament is overlapped on either side by laryngeal muscles. The conus elasticus is the lateral portion of the cricothyroid ligament; the lateral portions lie close under the mucous membrane of the larynx. The vocal ligaments may therefore be regarded as the free borders of each conus elasticus, extend from the vocal processes of the arytenoid cartilages to the angle of the thyroid cartilage about midway between its upper and lower borders; these anatomical structure have been called in many different ways in the past, thus generating confusion.
This ligament is cut during emergency cricothyrotomy. This ligament's main purpose is to keep the thyroid from traveling too far; this article incorporates text in the public domain from page 1078 of the 20th edition of Gray's Anatomy
Cricoarytenoid muscles are muscles that connect the cricoid cartilage and arytenoid cartilage. More it can refer to: Posterior cricoarytenoid muscle Lateral cricoarytenoid muscle
In the human larynx, the vocal process is the anterior angle of the base of the arytenoid cartilage, as it projects horizontally forward and gives attachment to the vocal ligament. The arytenoids are paired cartilages with a lateral process each; the medial process is called the vocal process. The lateral process is the attachment of one of the major intrinsic muscles of the vocal folds and named the muscular process; as the concave bases of the arytenoid cartilages move on the two convex articular surfaces on the cricoid cartilage, the vocal processes are brought closer to each other, which permits the vocal folds to make contact and abduct. Just above the vocal process is a shallow depression, the oblong fovea of the arytenoid cartilage. Together they constitute the insertion for the vocalis muscle. Vocal process granulomas are rare and benign lesions that occur in 0.9–2.7% of adults with a voice disorder. Most occurrences and forms of vocal process granulomas regress spontaneously without any specific treatment large ones.
This article incorporates text in the public domain from page 1075 of the 20th edition of Gray's Anatomy
The Adam's apple, or laryngeal prominence, is a feature of the human neck, is the lump or protrusion, formed by the angle of the thyroid cartilage surrounding the larynx seen in males. The structure of the Adam's apple forms a bump under the skin, it is larger in adult males, in whom it is clearly visible and palpable. In females, the bump is much less visible and is hardly perceived on the upper edge of the thyroid cartilage. An Adam's apple is a feature of adult males, because its size in males tends to increase during puberty. However, some women have an Adam's apple, its development is considered a secondary sexual characteristic of males that appears as a result of hormonal activity. Its level of development varies among individuals and the widening of that area in the larynx can occur suddenly and quickly; the Adam's apple, in conjunction with the thyroid cartilage which forms it, helps protect the walls and the frontal part of the larynx, including the vocal cords. Another function of the Adam's apple is related to the deepening of the voice.
During adolescence, the thyroid cartilage grows together with the larynx. The laryngeal prominence grows in size in men. Together, a larger soundboard is made up in phonation apparatus and, as a result, the man gets a deeper voice note. Cosmetic surgery to reshape the Adam's apple is called chondrolaryngoplasty; the surgery is effective, such that complications tend to be few and, transient. There are two main theories as to the origin of the term "Adam's apple"; the "Brewer's Dictionary of Phrase and Fable" and the 1913 edition of Webster's Dictionary point at an ancient belief that a piece of forbidden fruit was embedded in the throat of Adam, who according to the Abrahamic religions was the first man. However, neither the Bible nor other Judeo-Christian or Islamic writings mention such a story. In fact, the biblical story does not specify the type of fruit that Adam ate. Linguist Alexander Gode claimed that the Latin phrase to designate the laryngeal prominence was probably translated incorrectly from the beginning.
The phrase in Latin was "pomum Adami". This, in turn, came from the Hebrew "tappuach ha adam" meaning "apple of man"; the confusion lies in the fact that in Hebrew language the proper name "Adam" means "man", while the Hebrew word "apple" means "swollen", thus in combination: the swelling of a man. Proponents of this version contend that the subsequent phrases in Latin and other Romance languages represent a mistranslation from the start; the medical term "prominentia laryngea" was introduced by the Basle Nomina Anatomica in 1895. In the American South, goozle is used colloquially to describe the Adam's apple derived from guzzle. Hyoid bone Larynx Media related to Laryngeal prominence at Wikimedia Commons lesson11 at The Anatomy Lesson by Wesley Norman
The corniculate cartilages are two small conical nodules consisting of elastic cartilage, which articulate with the summits of the arytenoid cartilages and serve to prolong them posteriorly and medially. They are situated in the posterior parts of the aryepiglottic folds of mucous membrane, are sometimes fused with the arytenoid cartilages, it is named by Giovanni Domenico Santorini. The word "Corniculate" has a Latin root "cornu". Cornu means horn like projections; the projections of Corniculate cartilage look like "horns" hence the name. This article incorporates text in the public domain from page 1075 of the 20th edition of Gray's Anatomy Atlas image: rsa3p8 at the University of Michigan Health System
The portion of the cavity of the larynx above the vocal folds is called the laryngeal vestibule. It contains the vestibular folds, between these and the vocal folds are the laryngeal ventricles; the vestibule is an opening in the lateral wall of the larynx, between the vestibular fold above and the vocal folds below. It is the inlet to another cavity in the lateral wall of the laryngeal ventricle; the vestibular fold is formed by the vestibular ligament extending from the lateral walls of the epiglottis to the arytenoid cartilage covered with mucous membrane. The vocal fold is the upper free margin of the conus elasticus, covered by mucous membrane; the conus elasticus or lateral ligament is the lateral thickened part of the cricothyroid membrane. This article incorporates text in the public domain from page 1078 of the 20th edition of Gray's Anatomy Specific Atlas image: rsa3p14 at the University of Michigan Health System - "Larynx, lateral view" lesson11 at The Anatomy Lesson by Wesley Norman
The infraglottic cavity is the portion of the larynx below the laryngeal ventricles and the rima glottidis. Part_8/chapter_53.html: Basic Human Anatomy at Dartmouth Medical School figures/chapter_53/53-10. HTM: Basic Human Anatomy at Dartmouth Medical School lesson11 at The Anatomy Lesson by Wesley Norman Diagram at sci.port.ac.uk