science

Oblique arytenoid

Oblique arytenoid 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 Oblique arytenoid rather than just read about it. In short: The oblique arytenoid is bilaterally paired intrinsic muscle of the larynx. It is superficial to the transverse arytenoid; the oblique and transverse arytenoids are often considered two parts of a single muscle - the interarytenoid muscle (which is then said to have an oblique part and a transverse part).

Key takeaways

Oblique arytenoid belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Oblique arytenoid to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Oblique arytenoid from memory before moving on to harder problems.

Reference excerpt

The oblique arytenoid is bilaterally paired intrinsic muscle of the larynx. It is superficial to the transverse arytenoid; the oblique and transverse arytenoids are often considered two parts of a single muscle - the interarytenoid muscle (which is then said to have an oblique part and a transverse part). Each oblique arytenoid muscle attaches to both arytenoid cartilages; the two oblique arytenoids thus cross each other. Some muscle fibres of the oblique arytenoid muscle proceed to extend laterally around the apex of arythenoid cartilage into the aryepiglottic fold, thus forming the aryepiglottic muscle.

Anatomy

Attachments Each oblique arytenoid muscle attaches to the posterior aspect of the muscular process of arytenoid cartilage of one side, and to the apex of the arytenoid cartilage of the opposite side; the two oblique arytenoid muscles thus cross each other obliquely.

Vasculature Arterial supply is provided by laryngeal branches of superior thyroid arteries and inferior thyroid arteries.

Innervation The muscle receives motor innervation from the recurrent laryngeal nerve (a branch of the vagus nerve (CN X)) (as is the case with all intrinsic muscles of the larynx except the cricothyroid muscle).

Function Together with the aryepiglottic muscles, the two oblique arytenoid muscles function as a sphincter of the laryngeal inlet by adducting aryepiglottic folds, and approximating the arytenoid cartilages and the tubercle of epiglottis. The muscles act during swallowing or coughing.

References

External links lesson11 at The Anatomy Lesson by Wesley Norman (Georgetown University) (larynxmuscles)

Illustrations

Worked examples

Example 1 — a first encounter with Oblique arytenoid

Start with the simplest possible case. Write down what Oblique arytenoid 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 Oblique arytenoid 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 Oblique arytenoid 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 Oblique arytenoid

In research: Oblique arytenoid 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 Oblique arytenoid 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: Oblique arytenoid is common in secondary-school and first-year university syllabi. It links to neighbouring topics Muscle stubs, Muscles of the head and neck, so understanding it makes those chapters shorter.
In everyday life: Look for Oblique arytenoid 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 Oblique arytenoid in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Oblique arytenoid means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Oblique arytenoid out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Oblique arytenoid in simple terms?

Why does Oblique arytenoid 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 Oblique arytenoid?

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 Oblique arytenoid.