science

Long posterior ciliary arteries

Long posterior ciliary arteries 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 Long posterior ciliary arteries rather than just read about it. In short: The long posterior ciliary arteries are arteries of the orbit. There are long posterior ciliary arteries two on each side of the body.

Key takeaways

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

Reference excerpt

The long posterior ciliary arteries are arteries of the orbit. There are long posterior ciliary arteries two on each side of the body. They are branches of the ophthalmic artery. They pass forward within the eye to reach the ciliary body where they ramify and anastomose with the anterior ciliary arteries, thus forming the major arterial circle of the iris.The long posterior ciliary arteries contribute arterial supply to the choroid, ciliary body, and iris.

Anatomy There are two long ciliary arteries. They are branches of the ophthalmic artery.

Course and relations The long posterior ciliary arteries first run near the optic nerve before piercing the posterior sclera near the optic nerve. They pass anterior-ward - one along each side of the eyeball - between the sclera and choroid to reach the ciliary muscle where they divide into two branches which go on to form the major arterial circle of the iris.

Anastomoses Non-terminal branches of the long posterior ciliary arteries anastomose with branches of the short posterior ciliary arteries. Upon reaching the ciliary body, the long posterior ciliary arteries ramify superiorly and inferiorly, the branches forming anastomoses with each other and with those of the anterior ciliary arteries to form the major arterial circle of the iris.

Distribution The long posterior ciliary arteries supply the choroid, ciliary body, and iris. Non-terminal branches are distributed to the ciliary muscle/ciliary body, and anterior choroid. Terminal branches are distributed to the iris and ciliary body via the major arterial circle of the iris.

See also Short posterior ciliary arteries

References

External links

Illustrations

Worked examples

Example 1 — a first encounter with Long posterior ciliary arteries

Start with the simplest possible case. Write down what Long posterior ciliary arteries 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 Long posterior ciliary arteries 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 Long posterior ciliary arteries 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 Long posterior ciliary arteries

In research: Long posterior ciliary arteries 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 Long posterior ciliary arteries 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: Long posterior ciliary arteries is common in secondary-school and first-year university syllabi. It links to neighbouring topics Arteries of the head and neck, Cardiovascular system stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Long posterior ciliary arteries 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 Long posterior ciliary arteries in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Long posterior ciliary arteries 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 Long posterior ciliary arteries out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Long posterior ciliary arteries in simple terms?

The long posterior ciliary arteries are arteries of the orbit. There are long posterior ciliary arteries two on each side of the body.

Why does Long posterior ciliary arteries 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 Long posterior ciliary arteries?

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 Long posterior ciliary arteries.