Maximus Gage
The larynx, commonly known as the voice box, is an organ at the top of the neck that plays a role in breathing, sound production, and protecting the trachea from food aspiration. The muscles of the larynx can be divided into two groups: external muscles, which elevate or depress the larynx, and internal muscles, which move the individual components of the larynx and are essential for breathing and phonation. This text will focus on the muscles responsible for elevating the larynx.
| Characteristics | Values |
|---|---|
| Muscles that elevate the larynx | Suprahyoid muscles, stylopharyngeus, thyrohyoid, digastric, mylohyoid, stylohyoid, geniohyoid, hyoglossus, genioglossus |
| Muscles that depress the larynx | Infrahyoid muscles, sternohyoid, omohyoid, sternothyroid |
Explore related products
What You'll Learn
Suprahyoid muscles elevate the larynx
The larynx, commonly referred to as the voice box, is an organ at the top of the neck that is involved in breathing, producing sound, and protecting the trachea against food aspiration. The muscles of the larynx can be divided into two groups: the external muscles and the internal muscles. The external muscles, or extrinsic muscles, act to elevate or depress the larynx during swallowing. The internal muscles, or intrinsic muscles, act to move the individual components of the larynx and play a vital role in breathing and phonation.
The suprahyoid muscles are a group of four muscles located superior to the hyoid bone. They include the digastric, mylohyoid, geniohyoid, and stylohyoid muscles. These muscles function to position the hyoid bone and coordinate the movements of the floor of the mouth and the hyoid bone during swallowing or vocalization. They are also referred to as accessory muscles of mastication due to their contribution during chewing or mastication.
The stylohyoid muscle, when contracted, is believed to function as a stabilizer, retractor, and elevator of the hyoid bone. It also helps to keep the pharynx open during inspiration by tensing the floor of the mouth. The mylohyoid muscle elevates the hyoid bone and the floor of the mouth when the mandibular attachment is fixed. When the hyoid attachment is fixed, it depresses the mandible. The geniohyoid muscle has its origin on the inferior mental spine, and its fibers radiate posteroinferiorly to the body of the hyoid.
The suprahyoid muscles, along with the stylopharyngeus, are responsible for elevating the larynx. They attach the larynx to the hyoid bone and elevate the hyolaryngeal complex. The hyoid bone is the only bone in the larynx and articulates with many extrinsic laryngeal muscles. The anterior prominence of the thyroid cartilage is a notable external landmark of the larynx. The hyoid bone is palpable superiorly, and the thyroid gland is palpable inferiorly.
Cardio's Muscle Burn: What, Why, and How to Avoid It
You may want to see also
Explore related products
$28.04 $29.69
Stylopharyngeus elevates the larynx
The larynx, commonly referred to as the voice box, is an organ at the top of the neck that is involved in breathing, producing sound, and protecting the trachea against food aspiration. The muscles of the larynx can be divided into two groups: the external muscles and the internal muscles. The external muscles, or extrinsic muscles, act to elevate or depress the larynx during swallowing. The internal muscles, or intrinsic muscles, act to move the individual components of the larynx, playing a vital role in breathing and phonation.
The stylopharyngeus is an extrinsic muscle of the larynx that acts to elevate the larynx. It is a long, slender, tapered pharyngeal muscle that originates from the temporal styloid process. Some of its fibres insert onto the thyroid cartilage, while others end by intermingling with proximal structures. It is innervated by the glossopharyngeal nerve (cranial nerve IX). The stylopharyngeus is the only muscle of the pharynx innervated by the glossopharyngeal nerve. It is also the only muscle of the pharynx that does not originate in the pharyngeal wall.
The stylopharyngeus is involved in elevating the pharynx and larynx, which is important during swallowing and speaking. The swallowing reflex is triggered once the food bolus touches the pharyngeal wall. Firstly, the pharyngeal constrictor muscles propel the bolus through the pharynx towards the oesophagus. Then the internal pharyngeal longitudinal muscles, including stylopharyngeus, elevate the pharynx to receive the food bolus. The stylopharyngeus is a long, thin muscle that is shaped like a cylinder superiorly and becomes flat inferiorly. It originates from the medial base of the styloid process of the temporal bone. The muscle extends inferiorly, travelling along the sides of the pharynx between the superior and middle pharyngeal constrictor muscles.
The stylopharyngeus muscle is also involved in dilating the pharynx, thus facilitating swallowing. It passes inferior-ward along the side of the pharynx between the superior pharyngeal constrictor and the middle pharyngeal constrictor, before spreading out beneath the mucous membrane. It arises from the medial side of the base of the temporal styloid process. The stylopharyngeus muscle is situated in between the external carotid artery and internal carotid artery. On the lateral pharyngeal wall, it is situated posterior to the superior constrictor muscle and anterior to the buccopharyngeal fascia.
Measuring Muscle Force: Understanding the Science of Strength
You may want to see also
Explore related products
Thyrohyoid muscles elevate the larynx
The larynx, commonly referred to as the voice box, is an organ located at the top of the neck. It is involved in breathing, sound production, and protecting the trachea from food aspiration. The laryngeal muscles are critical to voice production, breathing, and protecting the airway during swallowing. These muscles can be divided into two groups: extrinsic and intrinsic muscles. The extrinsic muscles act to elevate or depress the larynx during swallowing, while the intrinsic muscles act to move the individual components of the larynx, playing a vital role in breathing and phonation.
The thyrohyoid muscle is one of the extrinsic muscles that elevate the larynx. It is inserted on the superior aspect of the hyoid bone, along with other muscles such as the geniohyoid, digastric, mylohyoid, and stylohyoid muscles. These muscles work in conjunction with muscles inserted on the pharynx, such as the stylopharyngeus, palatopharyngeus, and pharyngeal constrictor muscles, to elevate the larynx.
The hyoid bone is the only bone in the larynx and articulates with many extrinsic laryngeal muscles. The anterior prominence of the thyroid cartilage is a notable external landmark of the larynx. The hyoid bone is palpable superiorly, and the thyroid gland is palpable inferiorly. The larynx is divided into three main regions: the supraglottis, glottis, and subglottis.
The suprahyoid muscles, including the thyrohyoid muscle, are responsible for elevating the larynx during swallowing. This elevation, along with the closure of the vocal cords, is essential for preventing food or liquid from entering the larynx and protecting the airway. The intrinsic laryngeal muscles, on the other hand, act on the individual components of the larynx, such as controlling the shape of the rima glottidis (the opening between the vocal folds and the arytenoid cartilages) and the length and tension of the vocal folds.
The thyrohyoid muscle, as part of the suprahyoid group, plays a crucial role in elevating the larynx during swallowing. This elevation is a protective mechanism that prevents foreign objects from entering the lungs and initiates a cough reflex when necessary.
Avoiding Trapezius Muscle Strain: Tips for Prevention and Care
You may want to see also
Explore related products
Digastric muscles elevate the larynx
The digastric muscle is one of the muscles that elevates the larynx. The larynx, commonly called the voice box, is an organ in the top of the neck involved in breathing, producing sound, and protecting the trachea against food aspiration. The muscles of the larynx can be divided into two groups: external muscles and internal muscles. The external muscles act to elevate or depress the larynx during swallowing. The internal muscles act to move the individual components of the larynx, playing a vital role in breathing and phonation.
The digastric muscle has two bellies with different innervations. The anterior belly is innervated by the mylohyoid nerve (a branch of the mandibular nerve). The posterior belly is innervated by the facial nerve (cranial nerve VII). The digastric muscle is one of the suprahyoid muscles, which attach to the superior aspect of the hyoid bone and function to fixate and elevate it along with the larynx. The suprahyoid muscles and the stylopharyngeus elevate the larynx, while the infrahyoid muscles depress the larynx.
The hyoid is the only bone in the larynx and articulates with many extrinsic laryngeal muscles. The extrinsic muscles act to move the larynx superiorly and inferiorly. They are comprised of the suprahyoid and infrahyoid groups, and the stylopharyngeus (a muscle of the pharynx). The supra- and infrahyoid muscle groups attach to the hyoid bone, which is bound to the larynx by strong ligaments, allowing the whole of the larynx to be moved as one unit.
Several cervical muscles act extrinsically on the larynx to aid in phonation and swallowing. Muscles inserted on the superior aspect of the hyoid (geniohyoid, digastric, mylohyoid, thyrohyoid, and stylohyoid muscles) and pharynx (stylopharyngeus, palatopharyngeus, and pharyngeal constrictor muscles) act in conjunction to elevate the larynx. Those muscles inserted on the inferior surface of the hyoid (sternohyoid and omohyoid muscles) and the sternothyroid muscle act to depress the larynx.
Muscle Rev Xtreme: Legit Results or Scam?
You may want to see also
Explore related products
Mylohyoid muscles elevate the larynx
The larynx, commonly called the voice box, is an organ at the top of the neck involved in breathing, producing sound, and protecting the trachea against food aspiration. The muscles of the larynx can be divided into two groups: extrinsic and intrinsic muscles. The extrinsic muscles act to elevate or depress the larynx during swallowing, while the intrinsic muscles act to move the individual components of the larynx, playing a vital role in breathing and phonation.
The extrinsic muscles that elevate the larynx include the suprahyoid muscles and the stylopharyngeus. The suprahyoid muscles include the mylohyoid muscles, which are inserted on the superior aspect of the hyoid bone and function to elevate it along with the larynx. The stylopharyngeus muscle is not attached directly to the hyoid bone but acts indirectly to elevate both the hyoid bone and the larynx.
The intrinsic laryngeal muscles serve various functions, many of which can be categorized by their action on the vocal ligament. The adductors are the thyroarytenoid (vocalis), lateral cricoarytenoid, and interarytenoid muscles. The abductors are the posterior cricoarytenoid muscles, which are the only muscles capable of widening the rima glottidis. The transverse and oblique arytenoids muscles adduct the arytenoid cartilages, closing the posterior portion of the rima glottidis.
The hyoid bone is the only bone in the larynx, and it articulates with many extrinsic laryngeal muscles. The anterior prominence of the thyroid cartilage is a notable external landmark of the larynx. The hyoid bone is palpable superiorly, and the thyroid gland is palpable inferiorly. The larynx is divided into the supraglottis, glottis, and subglottis.
Fasting: Muscle Recovery Friend or Foe?
You may want to see also
Frequently asked questions
The muscles that elevate the larynx are the suprahyoid muscles, the stylopharyngeus, and the thyrohyoid, digastric, stylohyoid, mylohyoid, geniohyoid, hyoglossus, and genioglossus muscles.
The larynx, commonly called the voice box, is an organ in the top of the neck involved in breathing, producing sound, and protecting the trachea against food aspiration.
The muscles of the larynx are divided into two groups: intrinsic and extrinsic. The extrinsic muscles produce the movements of the hyoid bone and include the suprahyoid and infrahyoid groups. The intrinsic muscles move the vocal cords to produce speech sounds.
The suprahyoid muscles are attached to the superior aspect of the hyoid bone and elevate it along with the larynx. The infrahyoid muscles attach to the lower larynx and the inferior aspect of the hyoid bone and work to lower the larynx and the hyoid bone.
