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Topic: Thyroid cartilage


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In the News (Thu 16 Feb 12)

  
  Thyroid - Wikipedia, the free encyclopedia
The thyroid is one of the larger endocrine glands - 10-20 grams in adults- and butterfly-shaped: the wings correspond to the lobes and the body to the isthmus of the thyroid.
The superior thyroid artery is the first branch of the external carotid, and supplies mostly the upper half of the thyroid gland, while the inferior thyroid artery is the major branch of the thyrocervical trunk, which comes off of the subclavian artery.
A nodule or lobe of the thyroid is sometimes removed for biopsy or for the presence of an autonomously functioning adenoma causing hyperthyroidism.
en.wikipedia.org /wiki/Thyroid   (2135 words)

  
 Thyroid Gland - MSN Encarta   (Site not responding. Last check: 2007-11-01)
Thyroid Gland, endocrine gland found in almost all vertebrate animals and so called because it is located in front of and on each side of the thyroid cartilage of the larynx (see Endocrine System).
Thyroid scanning with radioiodine or technetium-99m is especially useful for detecting or ruling out cancer of the thyroid in persons who have a palpable nodule, or thyroid lump.
The thyroid gland appears to be quite sensitive to irradiation: during the 1970s an increased incidence of thyroid cancer was found among people who had been treated early in life with X rays for such conditions as acne, ringworm, and tonsilitis.
encarta.msn.com /encnet/refpages/RefArticle.aspx?refid=761556732   (637 words)

  
 Adam's apple - Wikipedia, the free encyclopedia
At the front is the thyroid cartilage, creating the lump at the front of the neck, known as the laryngeal prominence or more commonly as the Adam's apple.
The entire superior edge of the thyroid cartilage is attached to the hyoid bone by the thyroid membrane.
The thyroid cartilage forms the bulk of the anterior wall of the larynx, and serves to protect the vocal folds ("vocal cords") which are located directly behind it.
en.wikipedia.org /wiki/Thyroid_cartilage   (578 words)

  
 Thyroid
The thyroid is quite large for an endocrine gland -\n15-30 grams - and butterfly-shaped: the wings correspond to the lobes and the body to the isthmus of the thyroid.
The follicles are made of a single layer of thyroid epithelial cells,which secrete T3 and T4, inside the follicles is a colloid which is rich in a protein called thyroglobulin.
Newborn children in many developed counties are now routinely tested for thyroid hormone deficiency; this is done by analysis of a small drop of blood from the child (usually, the blood also is tested for phenylketonuria and several other metabolic diseases of genetic etiology).
encyclopedia.codeboy.net /wikipedia/t/th/thyroid.html   (620 words)

  
 eMedicine - Thyroid Anatomy : Article by David Lemaire, MD   (Site not responding. Last check: 2007-11-01)
The thyroid gland is ensheathed by the visceral fascia, a division of the middle layer of deep cervical fascia, which attaches it firmly to the laryngoskeleton.
The inferior thyroid artery arises from the thyrocervical trunk, a branch of the subclavian artery.
Mansberger AR Jr, Wei JP: Surgical embryology and anatomy of the thyroid and parathyroid glands.
www.emedicine.com /ent/topic532.htm   (2190 words)

  
 Airway Anatomy   (Site not responding. Last check: 2007-11-01)
The rigid laryngeal structures are the hyoid bone, thyroid cartilage, cricoid cartilage and arytenoid cartilage.
Inferior to the cricoid cartilage are tracheal cartilages.
Palpate the thyroid cartilage and move down to the space between the thyroid and cricoid cartilages to identify the membrane.
gasnet.med.yale.edu /airway/anat01.htm   (114 words)

  
 THE LARYNX: THYROID AND CRICOID CARTILAGES   (Site not responding. Last check: 2007-11-01)
Most prominent is the thyroid cartilage, which consists of two plates of hyaline cartilage arranged in a wedge-shape.
Attached to the inferior margins of the thyroid cartilage is the cricoid cartilage.
Inferior to the cricoid cartilage is the trachea.
www.getbodysmart.com /ap/respiratorysystem/larynx/thyroid_cricoid/tutorial.html   (172 words)

  
 [No title]
The thyrohyoid membrane connects the superior border of the thyroid cartilage with the inferior margin of the greater cornu of the hyoid bone.
The pre-epiglottic space is bounded by the hyoepiglottic ligament superiorly, the thyroid cartilage and the thyrohyoid membrane anteriorly, and the epiglottis and thyroepiglottic ligament posteriorly.
The supraglottic larynx is comprised of the epiglottis, the false vocal cords, the aryepiglottic fords, the arytenoid cartilages, and the ventricle.
www.utmb.edu /oto/Grand_Rounds_Earlier.dir/Conservative_Larynx_Surgery_1996.txt   (3868 words)

  
 Section 2 Chapter 7 Thyroid and Parathyroid Procedures
The thyroid is retracted anteriorly and medially and the carotid sheath laterally; this retraction places tension on the middle thyroid veins and helps expose the area posterolateral to the thyroid, where the parathyroid glands and the recurrent laryngeal nerves are situated.
The thyroid tissue that is to remain is oversewn with a 2-0 silk ligature.
The superior thyroid artery and veins are identified by retracting the thyroid inferiorly and medially.
www.acssurgery.com /acsonline/chapters/ch0207.htm   (5464 words)

  
 UNSW Embryology- Endocrine Development - Thyroid
Surgical anatomy and embryology of the thyroid gland
Is the endostyle the precursor of the thyroid gland?
Thyroid hormone is essential for the development of the brain, in which local conversion of the prohormone T4 to the active hormone T3 by the type II iodothyronine deiodinase (D2) plays a very important role.
embryology.med.unsw.edu.au /Notes/endocrine8.htm   (2036 words)

  
 Thyroid Cartilage   (Site not responding. Last check: 2007-11-01)
The larynx (voice box) is composed primarily of muscles and cartilages that are bound together by elastic tissues.
The thyroid cartilage was named for the thyroid gland that covers its lower part.
This cartilage is the shieldlike structure that protrudes in the front of the neck and is sometimes called the "Adam's apple." The protrusion is usually more prominent in males than in females because of the effect of male sex hormones on the development of the larynx.
www.innerbody.com /text/card60.html   (78 words)

  
 Thyroid surgery   (Site not responding. Last check: 2007-11-01)
The most common causes of thyroid dysfunction are autoimmune in which a person's own antibodies attack the thyroid directly (Hashimoto's thyroiditis) or stimulate thyroid hormone receptors to over-produce thyroid hormones (Grave's disease).
All or part of the thyroid gland may have to be removed depending on the size of the mass.
Thyroid surgery is done under general anesthesia and is usually performed on an inpatient basis.
www-surgery.ucsd.edu /ent/PatientInfo/th_thyroid.html   (770 words)

  
 Cancer Information, Research, and Treatment for all Types of Cancer | OncoLink
In the thyroid, the most common types of cancer are papillary adenocarcinoma of the thyroid (75-80%) and follicular adenocarcinoma of the thyroid (~15%).
Thyroid cancer is fairly common, as it is found at autopsy in approximately 5% of people with no known thyroid disease.
However, death due to thyroid cancer is uncommon, explained by the fact that thyroid cancer is usually an indolent disease, tending to remain localized to the thyroid gland for many years.
www.oncolink.upenn.edu /types/article.cfm?c=20&s=65&ss=513&id=107   (3248 words)

  
 Congenital Hypothyroidism
The thyroid gland system, which consists of the thyroid gland and two specialized brain centers known as the hypothalamus and pituitary, forms and almost completely matures while a baby is developing in the uterus.
Thyroid hormone is made as part of a very large protein called thyroglobulin which is stored inside the thyroid gland.
After starting thyroid hormone therapy, the child should be monitored on a regular basis to ensure that the thyroid hormone treatment is resulting in normal blood thyroid hormone and TSH levels.
www.thyroid.org.au /ThySoc/ThySocCH.html   (1577 words)

  
 eMedicine - Thyroid Anatomy : Article Excerpt by: David Lemaire, MD   (Site not responding. Last check: 2007-11-01)
The thyroid is a brownish-red and highly vascular gland located anteriorly in the lower neck, extending from the level of the fifth cervical vertebra down to the first thoracic.
Each lobe is 50-60 mm long, with the superior poles diverging laterally at the level of the oblique lines on the laminae of the thyroid cartilage.
Remnants of the thyroglossal duct may persist as accessory nodules or cysts of thyroid tissue between the isthmus and the foramen caecum of the tongue base.
www.emedicine.com /ent/byname/thyroid-anatomy.htm   (344 words)

  
 Finding and treating the cause of hyperthyroidism
Thyroid follicular cells, arranged in circles with colloidal protein in the center, produce thyroglobulin, a protein involved in the synthesis and storage of thyroid hormones.
The thyroid's ability to take in dietary iodine is unique to this gland and enables the use of radioactive iodine to assess thyroid size and activity and to treat overactive thyroids.
The thyroid gland lies approximately 2 to 3 cm below the thyroid cartilage, on either side of the tracheal rings, which may or may not be apparent on visual inspection (see Figure 1).
www.jaapa.com /issues/j20040201/articles/hyperthyroid.html   (3642 words)

  
 Thyroid Cancer Glossary of Terms with Definitions on MedicineNet.com
Thyroid cancer : Cancer of the gland in front of the neck that normally produces thyroid hormone which is important to the normal regulation of the metabolism of the body.
Thyroid gland: A gland that makes and stores hormones that help regulate the heart rate, blood pressure, body temperature, and the rate at which food is converted into energy.
Thyroid hormones: Chemical substances made by the thyroid gland, which is located in the front of the neck.
www.medicinenet.com /thyroid_cancer/glossary.htm   (2580 words)

  
 Evaluation of the Thyroid Nodule [Thyroid Cancer and Benign Disease]
The thyroid is a butterfly shaped gland that sits in front of the trachea, midway between the thyroid cartilage (“Adam’s apple”) and the top of the sternum (Figure 1).
Thyroid function can be assessed with a blood test to measure the level of thyroid stimulating hormone (TSH).
The skin over the thyroid will be cleaned, and a needle will be passed into the thyroid 3-4 times to obtain aspirations from different parts of the nodule.
www.cancernews.com /thyroidcancer.htm   (1133 words)

  
 Surgical Cricothyroidotomy   (Site not responding. Last check: 2007-11-01)
Cricoid cartilage – a continuous cartilaginous ring that forms the next tracheal cartilage caudal to the thyroid cartilage.
Cricothyroid membrane – a fibrocartilagenous membrane that lies between the thyroid cartilage superiorly and the cricoid cartilage inferiorly.
Inferior thyroid veins – arise from a venous plexus on the thyroid and descend anterior to the trachea
www.meddean.luc.edu /lumen/MedEd/Procedures/cricothyroidotomy_anatomy.htm   (263 words)

  
 ~Thyroid Cartilage~Info On Thyroid, Pituitary Gland And Thyroidism~Thyroid Cartilage~   (Site not responding. Last check: 2007-11-01)
In this method, the impedance between two surface electrodes, positioned on either side of the thyroid cartilage, is measured by means of a small electrical cur rent passed between the electrodes.
Identify the cricothyroid membrane, between the cricoid cartilage and the thyroid cartilage.
Thyroid General Information Thyroid gland is located low in the neck, between the thyroid cartilage (Adam's apple) and the collar bones.
www.thyroidorg.com /Thyroid6   (1736 words)

  
 Thyroid Cancer
The thyroid is a gland in the low, front part of the neck which produces special "thyroid hormones" necessarily for life.
The thyroid veins that drain blood from the thyroid form a network ("plexus") on the surface of the organ and empty into the "jugular veins", which return it to the heart.
The thyroid is a gland in the low neck, in front of the windpipe, that controls the bodyÕs metabolic rate.
www.canceranswers.com /Thyroid.Cancer.html   (2130 words)

  
 Thyroid Cartilage Anatomy Update, Portal And Facts   (Site not responding. Last check: 2007-11-01)
Emedicine thyroid anatomy article by david lemaire, md. anatomy of the endocrine system of the neck, thyroid gland, thyroid lobe, thyroid cartilage, thyroid artery, thyroid vein, thyroid muscle, thyroid.
And highly vascular gland that lies inferior to thyroid cartilage at the c5 to c7 level in adult consists.
Thyroid stimulating hormone, TSH, of the anterior pituitary gland is regulated by the binding of the thyroid hormone activated thyroid receptor to the TSH gene at the same time as the binding of the 9 cis retinoic acid activated retinoid X receptor to the same gene.
www.thyroid-research-online.info /thyroid-cartilage-anatomy.html   (1188 words)

  
 Thyroid Problems
The thyroid gland is located on the front part of the neck below the thyroid cartilage (Adam's apple).
Thyroid hormones are important in regulating body energy, the body's use of other hormones and vitamins, and the growth and maturation of body tissues.
One positive note for women with hyperthyroidism is that those with Graves disease or Hashimoto thyroiditis may have improvement in their symptoms during pregnancy.
www.emedicinehealth.com /thyroid_problems/article_em.htm   (777 words)

  
 Thyroid cartilage definition - Medical Dictionary definitions of popular medical terms
Thyroid cartilage: The largest of the cartilages of the larynx (the voice box).
The thyroid cartilage is formed of two approximately quadrilateral plates (called laminae) that are joined anteriorly (in the front) at an angle of from 90° to 120° to create a prominence in the neck.
The thyroid cartilage has nothing to do with the thyroid gland, except for proximity.
www.medterms.com /script/main/art.asp?articlekey=15568   (128 words)

  
 thyroid cartilage   (Site not responding. Last check: 2007-11-01)
thyroid cartilage a large cartilage of the larynx, the projection of which in man forms the Adam's apple.
thyroid cartilage The largest cartilage of the larynx consisting of two laminae fusing anteriorly at an acute angle in the midline of the neck.
This protuberance is part of one of the main skeletal parts of the larynx, the thyroid cartilage.
www.aboutyourthyroid.info /thyroidcartilage   (892 words)

  
 Hypothyroidism During Pregnancy Glossary of Terms with Definitions on MedicineNet.com
Autoimmune thyroid disease: Disease of the thyroid gland due to autoimmunity in which the patient's immune system attacks and damages their thyroid.
Hypothyroid: Deficiency of thyroid hormone which is normally made by the thyroid gland which is located in the front of the neck:
Thyroid hormone: A chemical substance made by the thyroid gland for export into the bloodstream.
www.medicinenet.com /hypothyroidism_during_pregnancy/glossary.htm   (1764 words)

  
 Thyroid : BC Cancer Agency
Thyroid gland is located low in the neck, between the thyroid cartilage (Adam's apple) and the collar bones
This is a rare cause of thyroid cancer which is becoming increasingly less important.
Thyroid operations have some risk of damage to the nerves in the neck that supply the larynx (voice box)
www.bccancer.bc.ca /PPI/TypesofCancer/Thyroid/default.htm   (856 words)

  
 Thyroid   (Site not responding. Last check: 2007-11-01)
The thyroid gland is a butterfly shaped and highly vascular gland that lies inferior to thyroid cartilage at the C5 to C7 level in adult consists of left and right lobes that connect across the middle by the isthmus and is situated at the front and sides of the neck beneath sand fascia layers.
The lobes of the thyroid gland are cone shaped whose apices expand from the middle to low third of the thyroid cartilage to the bases, located between the fifth and sixth tracheal rings.
The arteries that supply the thyroid gland are the external carotid artery, which branches to form the superior thyroid artery and the subclavian artery, which branches to form the inferior thyroid artery.
www.pitt.edu /~anat/Head/Thyroid/Thyroid.htm   (715 words)

  
 Neck, Larynx, & Thyroid
Extends from arytenoid cartilages to anterior commissure of the thyroid cartilage.
Anatomy: Thyroid gland is situated anterior to the trachea and has two lobes with a possible variable pyramidal lobe projecting upwards from the isthmus.
The diseases of the thyroid are most often evaluated by radio-nuclide imaging and ultrasound.
spinwarp.ucsd.edu /NeuroWeb/Text/ent-280.htm   (1502 words)

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