Infrahyoid muscles
(Redirected from Musculi infrahyoidei)
Infrahyoid muscles are a group of four muscles located beneath the hyoid bone in the neck. These muscles include the sternohyoid, omohyoid, sternothyroid, and thyrohyoid muscles. They are primarily responsible for the downward movement of the hyoid bone and larynx during swallowing and speech.
Anatomy[edit | edit source]
The infrahyoid muscles are situated in the anterior part of the neck, beneath the hyoid bone. They are divided into two groups: the superficial group, which includes the sternohyoid and omohyoid muscles, and the deep group, which includes the sternothyroid and thyrohyoid muscles.
Sternohyoid[edit | edit source]
The sternohyoid muscle is a thin, narrow muscle attaching the hyoid bone to the sternum. It functions to depress the hyoid bone after it has been elevated during swallowing.
Omohyoid[edit | edit source]
The omohyoid muscle, named for its two bellies separated by an intermediate tendon, extends from the upper border of the scapula to the lower border of the hyoid bone. It aids in lowering the hyoid bone and larynx during swallowing and speech.
Sternothyroid[edit | edit source]
The sternothyroid muscle is a wide, thin muscle that lies under the sternohyoid muscle. It depresses the thyroid cartilage and plays a crucial role in vocal pitch modulation.
Thyrohyoid[edit | edit source]
The thyrohyoid muscle, located above the sternothyroid, depresses the hyoid bone and elevates the larynx, playing a significant role in speech and swallowing.
Function[edit | edit source]
The primary function of the infrahyoid muscles is to depress the hyoid bone and larynx during swallowing and speech. This action helps in the opening of the esophagus, allowing food and liquid to pass into the stomach. Additionally, these muscles play a role in the modulation of vocal pitch.
Clinical significance[edit | edit source]
Dysfunction or injury to the infrahyoid muscles can lead to difficulties in swallowing and speech. Conditions such as dysphagia (difficulty swallowing) and dysphonia (voice disorders) may occur if these muscles are affected.
See also[edit | edit source]
| Infrahyoid muscles Resources | |
|---|---|
|
 |
Search WikiMD
Ad.Tired of being Overweight? Try W8MD's physician weight loss program.
Semaglutide (Ozempic / Wegovy and Tirzepatide (Mounjaro / Zepbound) available.
Advertise on WikiMD
|
WikiMD's Wellness Encyclopedia |
| Let Food Be Thy Medicine Medicine Thy Food - Hippocrates |
Translate this page: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
தமிழ்,
తెలుగు,
Urdu,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
বাংলা
European
español,
Deutsch,
français,
Greek,
português do Brasil,
polski,
română,
русский,
Nederlands,
norsk,
svenska,
suomi,
Italian
Middle Eastern & African
عربى,
Turkish,
Persian,
Hebrew,
Afrikaans,
isiZulu,
Kiswahili,
Other
Bulgarian,
Hungarian,
Czech,
Swedish,
മലയാളം,
मराठी,
ਪੰਜਾਬੀ,
ગુજરાતી,
Portuguese,
Ukrainian
Medical Disclaimer: WikiMD is not a substitute for professional medical advice. The information on WikiMD is provided as an information resource only, may be incorrect, outdated or misleading, and is not to be used or relied on for any diagnostic or treatment purposes. Please consult your health care provider before making any healthcare decisions or for guidance about a specific medical condition. WikiMD expressly disclaims responsibility, and shall have no liability, for any damages, loss, injury, or liability whatsoever suffered as a result of your reliance on the information contained in this site. By visiting this site you agree to the foregoing terms and conditions, which may from time to time be changed or supplemented by WikiMD. If you do not agree to the foregoing terms and conditions, you should not enter or use this site. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates Wikipedia, licensed under CC BY SA or similar.
Contributors: Prab R. Tumpati, MD
