What is digastric triangle?

The submandibular triangle, also known as the digastric triangle, is bounded anteriorly by the anterior belly of the digastric muscle, posteriorly by the posterior belly of the digastric muscle, superiorly by the mandible, and inferiorly by the mylohyoid

mylohyoid

The mylohyoid muscle or diaphragma oris is a paired muscle of the neck. It runs from the mandible to the hyoid bone, forming the floor of the oral cavity of the mouth. It is named after its two attachments near the molar teeth.

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Mylohyoid muscle - Wikipedia

and hypoglossus muscles.

What is digastric triangle content?

The digastric triangle houses submandibular gland and lymph nodes (anteriorly), caudal part of the parotid gland (posteriorly), facial artery and vein, submental artery and vein, lingual arteries and veins, mylohyoid nerve and the hypoglossal nerve (CN XII).

Where is the digastric triangle?

The submandibular triangle, also known as digastric triangle, is located superior to the hyoid bone. It is bordered: superiorly by the inferior border of the mandible and the mastoid process, posteriorly by the posterior belly of the digastric and stylohyoid muscles, and.

What is in the submandibular triangle?

The anterior part contains the submandibular gland, superficial to which is the anterior facial vein, while imbedded in the gland is the facial artery and its glandular branches. Beneath the gland, on the surface of the Mylohyoideus, are the submental artery and the mylohyoid artery and nerve.

What is a digastric muscle?

The digastric muscle functions during swallowing, chewing, and speech. The anterior belly of the digastric is one of the three suprahyoid muscles which stabilizes the hyoid during swallowing, an action critical in protecting the airway while eating.

Digastric triangle : Boundaries and contents - Animated Gross anatomy head and neck

Where is the digastric muscle?

The digastric muscle consists of the anterior belly and the posterior belly connecting the mandible, hyoid bone and temporal bone.

Where does digastric attach?

The digastric muscle stretches between the mastoid process of the cranium to the mandible at the chin, and part-way between, it becomes a tendon which passes through a tendinous pulley attached to the hyoid bone. It originates from the second pharyngeal arch.

What is the Wharton's duct?

Wharton's duct is a thin tube, about 5 cm in length, and an essential carrier of your saliva. Each submandibular duct begins at the right and left sides of the mouth. The submandibular duct openings are underneath the tongue. These openings that empty into the oral cavity are also known as sublingual caruncles.

What is in the occipital triangle?

Occipital triangle

Its floor consists of the levator scapulae, splenius capitis, and middle and posterior scalene muscles. The semispinalis capitis muscle is sometimes observed at the apex as well as occipital lymph nodes. The triangle is bounded by the superficial and deep layers of the deep cervical fascia.

What is the carotid triangle?

The carotid triangle is one of the natural geometrical formations of the neck. The triangle is located anterolaterally on each side of the neck. It is comprised of various anatomical structures that are noted as theoretical borders.

What is the origin of the digastric?

The digastric muscle stretches between the mastoid process of the cranium to the mandible at the chin, and part-way between, it becomes a tendon which passes through a tendinous pulley attached to the hyoid bone. It originates from the second pharyngeal arch.

What is the anterior triangle of the neck?

The anterior triangles refer to bilateral anatomic subdivisions of the neck comprising the anterior surface of the neck, deep to the superficial cervical fascia and platysma muscle. Laterally, the anterior triangle is bounded by the anterior border of the sternocleidomastoid muscle.

What is sublingual gland?

The sublingual gland is the smallest of the three major salivary glands [1], which also include the parotid and submandibular glands. The sublingual gland lies between the muscles of the floor of the oral cavity, which include the geniohyoid muscle, hyoglossus muscle medially, and the mylohyoid muscle inferiorly.

Why is gastric triangle important?

The importance of the triangle is because it has been known as the source of originating most of the gastrinomas. The appellation is due to Edward Peter Passaro, an American surgeon, who explained it for the first time.

What is the triangle of auscultation?

The triangle of auscultation is a relative thinning of the musculature of the back, situated along the medial border of the scapula which allows for improved listening to the lungs.

What is supraclavicular triangle?

The supraclavicular triangle is one of the paired triangles in the posterior triangle of the neck. The triangles of the neck are surgically focused, first described from early dissection-based anatomical studies which predated cross-sectional anatomical description based on imaging (see deep spaces of the neck).

Where is Pirogov's triangle located?

The Pirogov triangle (also Piragoff's triangle) is an area in the human neck formed by the intermediate tendon of the digastric muscle, the posterior border of the mylohyoid muscle, and the hypoglossal nerve.

What is rivinus duct?

The ducts of Rivinus, a group of excretory ducts, drain the sublingual gland. The largest sublingual gland excretory duct called the sublingual duct of Bartholin joins Wharton's duct near the sublingual caruncle.

What is submandibular duct?

The submandibular duct (also known as Wharton's duct) allows the passage of saliva from the submandibular gland to the sublingual papilla located anteriorly.

What is the largest salivary gland?

The parotid glands are the largest salivary glands. There are 2 parotid glands, one in front of each ear on either side of the face. The parotid gland is divided into 2 lobes, one on each side of the facial nerve. The superficial lobe is closest to the front of the neck.

Why is it called digastric muscle?

The digastric muscle is a small muscle located in the neck, just below the lower jaw. The name comes from the fact that this muscle has two different muscle bellies, anterior belly and posterior belly, that are joined together by a tendon.

Which muscles open the jaw?

Muscles that depress the mandible and thus open the jaw include the anterior digastric, mylohyoid, and inferior head of the lateral pterygoid. Jaw-closer muscles consist of the masseter, temporalis, medial pterygoid, and superior head of the lateral pterygoid.

Can you feel digastric muscle?

Locating your digastric muscle can be tricky, but you may be able to feel the anterior belly contract by placing your finger under your chin and trying to open your mouth against your finger's gentle resistance.