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Posterior fontanelle

Posterior fontanelle 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 Posterior fontanelle rather than just read about it. In short: The posterior fontanelle (lambdoid fontanelle, occipital fontanelle) is a gap between bones in the human skull (known as fontanelle), triangular in form and situated at the junction of the sagittal suture and lambdoidal suture. It generally closes in 6–8 weeks from birth.

Posterior fontanelle — main illustration
Posterior fontanelle — illustration

Key takeaways

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

Reference excerpt

The posterior fontanelle (lambdoid fontanelle, occipital fontanelle) is a gap between bones in the human skull (known as fontanelle), triangular in form and situated at the junction of the sagittal suture and lambdoidal suture. It generally closes in 6–8 weeks from birth. The cranial point in adults corresponding the fontanelle is called lambda. A delay in closure is associated with congenital hypothyroidism.

References This article incorporates text in the public domain from page 196 of the 20th edition of Gray's Anatomy (1918)

Illustrations

Posterior fontanelle illustration

Worked examples

Example 1 — a first encounter with Posterior fontanelle

Start with the simplest possible case. Write down what Posterior fontanelle 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 Posterior fontanelle 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 Posterior fontanelle 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 Posterior fontanelle

In research
Posterior fontanelle 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 Posterior fontanelle 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
Posterior fontanelle is common in secondary-school and first-year university syllabi. It links to neighbouring topics Musculoskeletal system stubs, Skull, so understanding it makes those chapters shorter.
In everyday life
Look for Posterior fontanelle 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 Posterior fontanelle in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Posterior fontanelle 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 Posterior fontanelle out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Posterior fontanelle in simple terms?

The posterior fontanelle (lambdoid fontanelle, occipital fontanelle) is a gap between bones in the human skull (known as fontanelle), triangular in form and situated at the junction of the sagittal suture and lambdoidal suture. It generally closes in 6–8 weeks from birth.

Why does Posterior fontanelle 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 Posterior fontanelle?

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 Posterior fontanelle.

Tags

  • Musculoskeletal system stubs
  • Skull

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