science

Sublingual gland

Sublingual gland is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Sublingual gland rather than just read about it. In short: The sublingual gland (glandula sublingualis) is a seromucous polystomatic exocrine gland. Located underneath the oral diaphragm (diaphragma oris), the sublingual gland is the smallest and most diffuse of the three major salivary glands of the oral cavity, with the other two being the submandibular and parotid.

Key takeaways

Sublingual gland belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
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Reproduce the core statement of Sublingual gland from memory before moving on to harder problems.

Reference excerpt

The sublingual gland (glandula sublingualis) is a seromucous polystomatic exocrine gland. Located underneath the oral diaphragm (diaphragma oris), the sublingual gland is the smallest and most diffuse of the three major salivary glands of the oral cavity, with the other two being the submandibular and parotid. The sublingual gland provides approximately 3-5% of the total salivary volume.

Structure The sublingual glands are located anterior and superior to the submandibular gland and inferior and lateral to the tongue, as well as inferior to the mucous membrane of the floor of the mouth. They are bound laterally by the bone of the mandible and inferolaterally by the mylohyoid muscle. The glands can be palpated posteriorly to each mandibular canine. Placing one index finger within the mouth and the fingertips of the opposite hand outside it, the compressed gland is manually palpated between the inner and outer fingers.

The sublingual gland is constituted by one major duct and approximately 20 small excretory ducts, with the latter often being referred to as ducts of Rivinus. The largest of all, the sublingual duct (of Bartholin) joins the submandibular duct to drain through the sublingual caruncle. The sublingual caruncle is a small papilla near the midline of the floor of the mouth on each side of the lingual frenum. Most of the remaining small sublingual ducts (of Rivinus) open separately into the mouth on an elevated crest of mucous membrane, the plica sublingualis (aka sublingual fold), formed by the gland and located on either side of the frenulum linguae.

Microanatomy The sublingual gland consists mostly of mucous acini having serous demilunes and is therefore categorized as a mixed mucous gland with mostly a mucous product. Striated and intercalated ducts are also present.

Blood supply The gland receives its blood supply from the sublingual and submental arteries. Lymph from the sublingual salivary gland drains into the submandibular lymph nodes.

Nerve supply The chorda tympani nerve (from the facial nerve via the submandibular ganglion) is secretomotor and provides parasympathetic supply to the sublingual glands. The path of the nerve is as follows: junction between pons and medulla, through internal acoustic meatus and facial canal to chorda tympani, through middle ear cavity, out petrotympanic fissure to join the lingual nerve, travels with lingual nerve to synapse at the submandibular ganglion, then postganglionic fibers travels to the sublingual gland.

Development The sublingual salivary glands appear in the eighth week of prenatal development, two weeks later than the other two major salivary glands. They develop from epithelial buds in the sulcus surrounding the sublingual folds on the floor of the mouth, lateral to the developing submandibular gland. These buds branch and form into cords that canalize to form the sublingual ducts associated with the gland. The rounded terminal ends of the cords form acini.

Clinical significance

Ranulas are the most common pathologic lesion associated with the sublingual glands.

Additional images

References

External links Anatomy photo:34:st-0701 at the SUNY Downstate Medical Center - "Oral Cavity: Glands" cranialnerves at The Anatomy Lesson by Wesley Norman (Georgetown University) (VII) "Anatomy diagram: 25420.000-1". Roche Lexicon - illustrated navigator. Elsevier. Archived from the original on 2015-02-26. Salivary gland infections from Medline Plus Salivary gland cancer from American Cancer Society

Illustrations

Worked examples

Example 1 — a first encounter with Sublingual gland

Start with the simplest possible case. Write down what Sublingual gland claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Sublingual gland before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Sublingual gland ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Sublingual gland

In research: Sublingual gland appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Sublingual gland in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Sublingual gland is common in secondary-school and first-year university syllabi. It links to neighbouring topics Glands of mouth, Otorhinolaryngology, so understanding it makes those chapters shorter.
In everyday life: Look for Sublingual gland outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Sublingual gland in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Sublingual gland means in your own words.
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Frequently asked questions

What is Sublingual gland in simple terms?

Why does Sublingual gland matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Sublingual gland?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Sublingual gland.