biology

High anterior hairline

High anterior hairline 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 High anterior hairline rather than just read about it. In short: High anterior hairline is a dysmorphic feature in which the frontal hairline which defines the top and sides of the forehead is unusually high. This can mean that either the distance between the trichion (hairline) and glabella is more than 2 SD above the mean, or that this distance is apparently (subjectively) increased.

Key takeaways

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

Reference excerpt

High anterior hairline is a dysmorphic feature in which the frontal hairline which defines the top and sides of the forehead is unusually high. This can mean that either the distance between the trichion (hairline) and glabella is more than 2 SD above the mean, or that this distance is apparently (subjectively) increased.

Conditions High anterior hairline is seen in the following conditions and syndromes:

ADNP-related multiple congenital anomalies Alacrima, achalasia, and intellectual disability syndrome Blepharophimosis - intellectual disability syndrome, MKB type Cardiac malformation, cleft lip/palate, microcephaly, and digital anomalies Coffin-Siris syndrome 12 Congenital disorder of glycosylation, type Iw, autosomal dominant Congenital heart defects and ectodermal dysplasia Curry-Jones syndrome Developmental and epileptic encephalopathy, 83 Granulocytopenia with immunoglobulin abnormality Intellectual developmental disorder with hypertelorism and distinctive facies Intellectual developmental disorder, X-linked 108 Metaphyseal chondrodysplasia-retinitis pigmentosa syndrome Neurodevelopmental disorder with hypotonia and brain abnormalities Neurodevelopmental disorder with hypotonia and dysmorphic facies Neurofacioskeletal syndrome with or without renal agenesis Noonan syndrome 4 Orofacial cleft 15 SIN3A-related intellectual disability syndrome due to a point mutation Singleton-Merten syndrome 1

See also Hair loss Low anterior hairline

References

Illustrations

Worked examples

Example 1 — a first encounter with High anterior hairline

Start with the simplest possible case. Write down what High anterior hairline 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 High anterior hairline 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 High anterior hairline 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 High anterior hairline

In research: High anterior hairline 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 High anterior hairline 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: High anterior hairline is common in secondary-school and first-year university syllabi. It links to neighbouring topics Anatomical pathology, Face, Hair, so understanding it makes those chapters shorter.
In everyday life: Look for High anterior hairline 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 High anterior hairline in 20 minutes

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

Frequently asked questions

What is High anterior hairline in simple terms?

Why does High anterior hairline 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 High anterior hairline?

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 High anterior hairline.