| Cricoid | | | | Anterolateral view of head and neck. (Cricoid cartilage labeled at center left.) | | | | The ligaments of the larynx. Antero-lateral view. (Cricoid cartilage visible near bottom center.) | | Latin | cartilago cricoidea | | Gray's | subject #236 1074 | | Precursor | 4th and 6th branchial arch | | MeSH | Cricoid+Cartilage | The cricoid cartilage, or simply cricoid (from the Greek krikoeides meaning "ring-shaped"), is the only complete ring of cartilage around the trachea. Image File history File links Gray1194. ...
Image File history File links Gray951. ...
For other uses, see Latin (disambiguation). ...
This article or section is in need of attention from an expert on the subject. ...
In the development of vertebrate animals, the branchial arches (or pharyngeal arches) develop during the fourth and fifth week in utero as a series of mesodermal outpouchings on the left and right sides of the developing pharynx. ...
Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. ...
Cartilage is a type of dense connective tissue. ...
Windpipe redirects here. ...
Location
It sits just inferior to the thyroid cartilage in the neck, and is joined to it medially by the median cricothyroid ligament and postero-laterally by the cricothyroid joints. Inferior to it are the rings of cartilage around the trachea (which are not continuous - rather they are C-shaped with a gap posteriorly). The cricoid is joined to the first tracheal ring by the cricotracheal ligament, and this can be felt as a more yielding area between the firm thyroid cartilage and firmer cricoid. The cartilages of the larynx. ...
For other uses, see Neck (disambiguation). ...
The cricothyroid ligament is the larger part of the laryngeal membrane, continuing inferiorly as a median or anterior part and twin lateral ligaments. ...
The anatomical planes The anatomical position is a schematic convention for describing the relative morphology of the human body. ...
The cricotracheal ligament connects the cricoid cartilage with the first ring of the trachea. ...
It is also anatomically related to the thyroid gland; although the thyroid isthmus is inferior to it, the two lobes of the thyroid extend superiorly on each side of the cricoid as far as the thyroid cartilage above it. For other uses, see Isthmus (disambiguation). ...
The posterior part of the cricoid is slightly broader than the anterior and lateral parts, and is called the lamina, while the anterior part is the band; this may be the reason for the common comparison made between the cricoid and a signet ring. In sciences dealing with the anatomy of animals, precise anatomical terms of location are necessary for a variety of reasons. ...
Lamina is a general anatomical term meaning plate or layer. ...
In zootomy, several terms are used to describe the location of organs and other structures in the body of bilateral animals. ...
Function The function of the cricoid is to provide attachments for the various muscles, cartilages, and ligaments involved in opening and closing the airway and in speech production. For other uses of Muscles, see Muscles (disambiguation). ...
In anatomy, the term ligament is used to denote three different types of structures:[1] Fibrous tissue that connects bones to other bones. ...
Windpipe redirects here. ...
In linguistics, manner of articulation describes how the tongue, lips, and other speech organs involved in making a sound make contact. ...
Composition It is made of hyaline cartilage, and so can become calcified or even ossified, particularly in old age. Cartilage is type of dense connective tissue. ...
Categories: Stub ...
Ossification is the process of bone formation, in which connective tissues, such as cartilage are turned to bone or bone-like tissue. ...
Clinical significance When intubating a patient under general anesthesia prior to surgery, the anesthesiologist will press on the cricoid cartilage to compress the esophagus behind it so as to prevent gastric reflux from occurring. Intubation being practiced on a dummy (conventional technique using a laryngoscope). ...
This article or section may be confusing for some readers, and should be edited to be clearer. ...
An anesthesiologist (American English), or anaesthetist (British English), also anaesthesiologist, is a medical doctor trained to administer anesthesia and manage the medical care of patients before, during, and after surgery. ...
Gastroesophageal Reflux Disease (GERD or GORD using the British Åsophageal) is defined as chronic symptoms or mucosal damage produced by the abnormal reflux in the esophagus[1]. This is commonly due to transient or permanent changes in the barrier between the esophagus and the stomach. ...
Gastric reflux could cause aspiration if this is not done considering the general anesthesia can cause relaxation of the gastro-esophageal sphincter allowing stomach contents to ascend through the esophagus into the trachea. Look up aspiration, aspirate in Wiktionary, the free dictionary. ...
This article is about the cardia in the human body. ...
Additional images Larynx Image File history File links Illu_larynx. ...
| Tracheotomy neck profile.png | Muscles of the pharynx and cheek. Image File history File links No higher resolution available. ...
| The cartilages of the larynx. Posterior view. Image File history File links Download high-resolution version (400x800, 45 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Larynx Epiglottis Wikipedia:Grays Anatomy images with missing articles 19 Posterior cricoarytenoid muscle Cricoid Arytenoid cartilage Stylopharyngeus...
| Ligaments of the larynx. Posterior view. Image File history File links Gray952. ...
| Sagittal section of the larynx and upper part of the trachea. Image File history File links Gray953. ...
| Coronal section of larynx and upper part of trachea. Image File history File links Gray954. ...
| The entrance to the larynx, viewed from behind. Image File history File links Gray955. ...
| Muscles of larynx. Side view. Right lamina of thyroid cartilage removed. Image File history File links No higher resolution available. ...
| Muscles of the larynx, seen from above. Image File history File links Gray960. ...
| Sagittal section of nose mouth, pharynx, and larynx. Image File history File links Download high resolution version (600x861, 185 KB) Summary See image:Gray994-adenoid. ...
| Front view of neck. Image File history File links No higher resolution available. ...
| See also Completed tracheotomy: 1 - Vocal cords 2 - Thyroid cartilage 3 - Cricoid cartilage 4 - Tracheal cartilages 5 - Balloon cuff A tracheotomy is a procedure performed by paramedics, emergency physicians and surgeons in order to secure an airway. ...
External links | General anatomy of neck (Throat • Pharynx • Larynx) | | Cartilages | Cricoid • Thyroid (Laryngeal prominence) • Epiglottis • Arytenoid • Cuneiform • Corniculate | | Ligaments | extrinsic ligaments: Thyrohyoid membrane (Lateral thyrohyoid ligament, Median thyrohyoid ligament) • Hyoepiglottic ligament • Cricotracheal ligament intrinsic ligaments: Cricothyroid ligament | | Folds and related structures | folds: (Glossoepiglottic, Aryepiglottic, Vocal, Vestibular) Vocal ligament • Ventricle of the larynx • Infraglottic cavity • Vestibule of larynx • Rima glottidis • Glottis | | Triangles of the neck | Anterior of the neck (Muscular, Carotid, Submandibular, Submental) Posterior of the neck (Occipital, Subclavian) The State University of New York Health Science Center at Brooklyn, better known as SUNY Downstate Medical Center, is an academic medical center and is the only one of its kind in the Borough of Brooklyn in New York City. ...
Georgetown University is an elite private research university located in Georgetown, Washington, D.C., United States. ...
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The Respiratory System Among four-legged animals, the respiratory system generally includes tubes, such as the bronchi, used to carry air to the lungs, where gas exchange takes place. ...
List of bones of the human skeleton Human anatomy is primarily the scientific study of the morphology of the adult human body. ...
For other uses, see Neck (disambiguation). ...
For other uses, see Throat (disambiguation). ...
The pharynx (plural: pharynges) is the part of the neck and throat situated immediately posterior to the mouth and nasal cavity, and cranial, or superior, to the esophagus, larynx, and trachea. ...
The larynx (plural larynges), colloquially known as the voicebox, is an organ in the neck of mammals involved in protection of the trachea and sound production. ...
Cartilage is a type of dense connective tissue. ...
Adams apple redirects here. ...
The epiglottis is a lid-like flap of fibrocartilage tissue covered with a mucus membrane, attached to the root of the tongue. ...
The arytenoid cartilages are a pair of small pyramid-shaped cartilages, at the upper rear of the larynx, to which the vocal cords are attached. ...
The cuneiform cartilages (cartilages of Wrisberg) are two small, elongated pieces of yellow elastic cartilage, placed one on either side, in the aryepiglottic fold, where they give rise to small whitish elevations on the surface of the mucous membrane, just in front of the arytenoid cartilages. ...
The corniculate cartilages (cartilages of Santorini) are two small conical nodules consisting of yellow elastic cartilage, which articulate with the summits of the arytenoid cartilages and serve to prolong them backward and medialward. ...
In anatomy, the term ligament is used to denote three different types of structures:[1] Fibrous tissue that connects bones to other bones. ...
The hyothyroid membrane (thyrohyoid membrane) is a broad, fibro-elastic layer, attached below to the upper border of the thyroid cartilage and to the front of its superior cornu, and above to the upper margin of the posterior surface of the body and greater cornua of the hyoid bone, thus...
The lateral thyrohyoid ligament (lateral hyothyroid ligament) is a round elastic cord, which forms the posterior border of the hyothyroid membrane and passes between the tip of the superior cornu of the thyroid cartilage and the extremity of the greater cornu of the hyoid bone. ...
The middle thicker part of the thyrohyoid membrane is termed the median thyrohyoid ligament (middle hyothyroid ligament, middle thyrohyoid ligament), its lateral thinner portions are pierced by the superior laryngeal vessels and the internal branch of the superior laryngeal nerve. ...
The Epiglottis is connected with the hyoid bone by an elastic band, the hyoepiglottic ligament, which extends from the anterior surface of the epiglottis to the upper border of the body of the hyoid bone. ...
The cricotracheal ligament connects the cricoid cartilage with the first ring of the trachea. ...
The cricothyroid ligament is the larger part of the laryngeal membrane, continuing inferiorly as a median or anterior part and twin lateral ligaments. ...
The Glossoepiglottic folds are the anterior or lingual surface of the epiglottis is curved forward, and covered on its upper, free part by mucous membrane which is reflected on to the sides and root of the tongue, forming a median and two lateral glossoepiglottic folds; the lateral folds are partly...
The entrance of the larynx (Fig. ...
// Bold textItalic text The vocal folds, also known popularly as vocal cords, are composed of twin infoldings of mucous membrane stretched horizontally across the larynx. ...
The vestibular fold (ventricular fold, superior or false vocal cord) is one of two thick folds of mucous membrane, each enclosing a narrow band of fibrous tissue, the ventricular ligament which is attached in front to the angle of the thyroid cartilage immediately below the attachment of the epiglottis, and...
Enclosed within the vocal folds, there are two strong bands, named the vocal ligaments (inferior thyroarytenoid). ...
The ventricle of the larynx (laryngeal sinus) is a fusiform fossa, situated between the ventricular and vocal folds on either side, and extending nearly their entire length. ...
The infraglottic cavity is the portion of the larynx below the ventricles of the larynx and rima glottidis. ...
The portion of the cavity of the larynx above the vocal folds is called the vestibule; it is wide and triangular in shape, its base or anterior wall presenting, however, about its center the backward projection of the tubercle of the epiglottis. ...
The rima glottidis is the opening between the true vocal cords and the arytenoid cartilages. ...
The space between the vocal cords is called the glottis. ...
Anatomists use the term triangles of the neck to describe the divisions created by the major muscles in the region. ...
The anterior triangle is bounded, in front, by the middle line of the neck; behind, by the anterior margin of the Sternocleidomastoideus; its base, directed upward, is formed by the lower border of the body of the mandible, and a line extending from the angle of the mandible to the...
The inferior carotid triangle (or muscular triangle), is bounded, in front, by the median line of the neck from the hyoid bone to the sternum; behind, by the anterior margin of the Sternocleidomastoideus; above, by the superior belly of the Omohyoideus. ...
The superior carotid triangle (or carotid triangle), is bounded, behind by the Sternocleidomastoideus; below, by the superior belly of the Omohyoideus; and above, by the Stylohyoideus and the posterior belly of the Digastricus. ...
The submandibular triangle (or submaxillary or digastric triangle) corresponds to the region of the neck immediately beneath the body of the mandible. ...
The submental triangle (or suprahyoid triangle) is a division of the anterior triangle of the neck. ...
The posterior triangle (or lateral cervical region) is bounded, in front, by the Sternocleidomastoideus; behind, by the anterior margin of the Trapezius; its base is formed by the middle third of the clavicle; its apex, by the occipital bone. ...
The occipital triangle, the larger division of the posterior triangle, is bounded, in front, by the Sternocleidomastoideus; behind, by the Trapezius; below, by the Omohyoideus. ...
The subclavian triangle, the smaller division of the posterior triangle, is bounded, above, by the inferior belly of the Omohyoideus; below, by the clavicle; its base is formed by the posterior border of the Sternocleidomastoideus. ...
Suboccipital | | Fascia | Deep cervical fascia (Pretrachial fascia, Prevertebral fascia, Investing layer) • Carotid sheath | | Other | Retropharyngeal space | |