biology

Gluteal sulcus

Gluteal 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 Gluteal sulcus rather than just read about it. In short: The gluteal sulcus (also known as the gluteal fold, tuck, fold of the buttock, horizontal gluteal crease, or gluteal furrow) is an area of the body of humans and anthropoid apes, described by a horizontal crease formed by the inferior aspect of the buttocks and the posterior upper thigh. The gluteal sulcus is formed by the posterior horizontal skin crease of the hip joint and overlying fat and is not formed by the l…

Key takeaways

Gluteal 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 Gluteal sulcus to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Gluteal sulcus from memory before moving on to harder problems.

Reference excerpt

The gluteal sulcus (also known as the gluteal fold, tuck, fold of the buttock, horizontal gluteal crease, or gluteal furrow) is an area of the body of humans and anthropoid apes, described by a horizontal crease formed by the inferior aspect of the buttocks and the posterior upper thigh. The gluteal sulcus is formed by the posterior horizontal skin crease of the hip joint and overlying fat and is not formed by the lower border of the gluteus maximus muscle, which crosses the fold obliquely. It is one of the major defining features of the buttocks. Children with developmental dysplasia of the hips are born with uneven gluteal folds and can be diagnosed with a physical examination and sonogram.

Gluteal muscles The gluteal muscles can be classified into two main groups: The superficial gluteal muscles are responsible for extension and abduction of the hip as well as stabilizing and maintaining the balance of the pelvis during the gait cycle. Deep gluteal muscles control external rotation of the extended hip and abduction of the flexed hip.

Clinical relevance The superolateral region, which is free of nerves and vessels, is used for intramuscular injections. The Trendelenburg gait, consisting of gluteus medius and minimus muscles, is essential to maintaining the balance of the pelvis during the gait cycle. The piriformis syndrome, which is also called deep gluteal syndrome or gluteal pain syndrome, is the pain or numbness in the posterior thigh, the buttock, and the hip, with radiation or radicular pain in the sciatic nerve distribution. This condition may be caused by trauma, hematoma, excessive sitting, and anatomic variations of the muscle and nerve. Superior gluteal nerve palsy causes injury to the superior gluteal nerve, which results in motor loss that manifests as a disabling gluteus medius limp. The most common cause is an iatrogenic injury during hip surgery or an intramuscular injection. Lesions of the inferior gluteal nerve occur through iatrogenic injuries like surgery, trauma, hernias, or pelvic tumors. This condition may result in a functional deficiency of the gluteus maximus muscle, leading to difficulties climbing the stairs or standing up from a chair, also known as the gluteus maximus lurch.

References

External links Media related to Gluteal sulcus at Wikimedia Commons

Illustrations

Worked examples

Example 1 — a first encounter with Gluteal sulcus

Start with the simplest possible case. Write down what Gluteal 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 Gluteal 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 Gluteal 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 Gluteal sulcus

In research: Gluteal 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 Gluteal 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: Gluteal sulcus is common in secondary-school and first-year university syllabi. It links to neighbouring topics Human surface anatomy, Lower limb anatomy, Pelvis, so understanding it makes those chapters shorter.
In everyday life: Look for Gluteal 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 Gluteal sulcus in 20 minutes

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

Frequently asked questions

What is Gluteal sulcus in simple terms?

Why does Gluteal 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 Gluteal 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 Gluteal sulcus.