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Marginal sulcus

Marginal sulcus is a biology 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 Marginal sulcus rather than just read about it. In short: In neuroanatomy, the marginal sulcus (margin of the cingulate sulcus) is a sulcus (crevice) that may be considered the termination of the cingulate sulcus. It separates the paracentral lobule anteriorly and the precuneus posteriorly.

Marginal sulcus — main illustration
Marginal sulcus — illustration

Key takeaways

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

Reference excerpt

In neuroanatomy, the marginal sulcus (margin of the cingulate sulcus) is a sulcus (crevice) that may be considered the termination of the cingulate sulcus. It separates the paracentral lobule anteriorly and the precuneus posteriorly.

Additional images

References This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

https://web.archive.org/web/20070416083824/http://www.med.harvard.edu/AANLIB/cases/case3/mr1/033.html

Illustrations

Marginal sulcus illustration
Marginal sulcus illustration
Marginal sulcus illustration

Worked examples

Example 1 — a first encounter with Marginal sulcus

Start with the simplest possible case. Write down what Marginal sulcus claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, 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 Marginal sulcus 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 Marginal sulcus 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 Marginal sulcus

In research
Marginal sulcus appears in biology 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 Marginal sulcus 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
Marginal sulcus is common in secondary-school and first-year university syllabi. It links to neighbouring topics Neuroanatomy stubs, Parietal lobe, Sulci (neuroanatomy), so understanding it makes those chapters shorter.
In everyday life
Look for Marginal sulcus 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 Marginal sulcus in 20 minutes

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

Frequently asked questions

What is Marginal sulcus in simple terms?

In neuroanatomy, the marginal sulcus (margin of the cingulate sulcus) is a sulcus (crevice) that may be considered the termination of the cingulate sulcus. It separates the paracentral lobule anteriorly and the precuneus posteriorly.

Why does Marginal sulcus matter?

Because it connects several biology 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 Marginal sulcus?

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 Marginal sulcus.

Tags

  • Neuroanatomy stubs
  • Parietal lobe
  • Sulci (neuroanatomy)

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