What are the boundaries of the submandibular space?
Anatomic boundaries the skin, superficial fascia, platysma muscle and superficial layer of the deep cervical fascia inferiorly and laterally, the medial surface of the mandible anteriorly and laterally, the hyoid bone posteriorly, the anterior belly of the digastric muscle medially.
What is sublingual space?
The sublingual space is a part of the floor of mouth 1. As the sublingual space is not bounded by fascia posteriorly, some authors consider the sublingual space a component of the submandibular space 2. More commonly, however, the sublingual and submandibular spaces are discussed separately 3-5.
Which muscle separates the sublingual and submandibular spaces?
The mylohyoid muscle
The mylohyoid muscle ( arrows ) separates the sublingual space from the submandibular space and is a key landmark in imaging of the oral cavity.
Where is the submandibular space located?
The submandibular space extends from the hyoid bone to the mucosa of the floor of the mouth, and is bound anteriorly and laterally by the mandible and inferiorly by the superficial layer of the deep cervical fascia.
What forms the superior border of the submandibular space?
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 are the boundaries of the submental triangle?
Borders. The submental triangle, also referred to as the suprahyoid triangle, is an unpaired suprahyoid area lying inferior to the chin. It is limited by the body of the hyoid bone inferiorly, laterally by the right and left anterior bellies of the digastric muscles.
What are the contents of the sublingual space?
This space contains the lingual artery and nerve, the hypoglossal nerve, the glossopharyngeal nerve, Wharton’s duct, and the sublingual salivary gland, which drains into the oral cavity through several small excretory ducts in the floor of the mouth and a major duct known as Bartholin’s duct.
How many sublingual spaces are there?
two sublingual spaces
Medial: intrinsic muscles of the tongue and genioglossus separate the two halves of the sublingual space. Note that anteriorly, the two sublingual spaces are communicating just below the frenulum via a small isthmus.
What is the space under the tongue called?
The lingual frenulum is a fold of mucus membrane that’s located under the center portion of your tongue.
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.
Is submaxillary and submandibular space same?
Some also subsume the submental space and others further include the sublingual space, as these spaces communicate freely 5,6. In the latter case, the portion of the submandibular space inferior to the mylohyoid muscle sling is also known as the submaxillary space or submylohyoid space 6.
What are the boundaries of digastric triangle?
What are the borders of the occipital triangle?
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.
What is the space between your chin and neck called?
Submental space
The submental space is a fascial space of the head and neck (sometimes also termed fascial spaces or tissue spaces). It is a potential space located between the mylohyoid muscle superiorly, the platysma muscle inferiorly, under the chin in the midline.
Where is Wharton duct opening?
major duct of each (Wharton’s duct) opens into the floor of the mouth at the junction where the front of the tongue meets the mouth’s floor. A capsule of tissue also surrounds each of these glands, which give off mixed secretions mostly serous in nature.
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.
Which teeth drain to sublingual space?
Submandibular and sublingual spaces Infection in these spaces usually arises from the second and third mandibular molar teeth because their root apices lie inferior to the mylohyoid muscle.
What are the boundaries of the submandibular triangle?
It is bounded: above, by the lower border of the body of the mandible, and a line drawn from its angle to the mastoid process; below, by the posterior belly of the Digastricus; in front, by the anterior belly of the Digastricus.
What are the boundaries of submental triangle?
What are the borders of the submandibular triangle?
The boundaries of the submandibular triangle are:
- Superiorly – body of the mandible.
- Anteriorly – anterior belly of the digastric muscle.
- Posteriorly – posterior belly of the digastric muscle.
What are the boundaries of the sublingual space?
The sublingual space is V-shaped, with the apex pointing to the anterior. Its boundaries are: medially, the intrinsic muscles of the tongue and genioglossus separate the two halves of the sublingual space. The sublingual space communicates posteriorly around the posterior free border of the mylohyoid muscle with the submandibular space.
Where is the Isthmus of the sublingual space located?
Each sublingual space communicates with contralateral sublingual space via a small isthmus just below the frenulum. It is like an inverted V with its apex pointing anteriorly and is located between: 1. La’porte SJ, Juttla JK, Lingam RK.
How does the sublingual space affect the mylohyoid?
The sublingual space communicates posteriorly around the posterior free border of the mylohyoid muscle with the submandibular space. Infections of the sublingual space may also erode through the mylohyoid, or spread via the lymphatics to the submandibular and submental spaces.
What causes a ranula in the sublingual space?
There are many causes, as well sequelae of inflammation and infection within the sublingual and submandibular spaces. Proper localisation of the abnormality is useful in determining aetiology. Among the differential diagnosis of cystic lesions in the sublingual space, a ranula is a commonly acquired lesion (Table 2 ).