physics

Mechanics of human sexuality

Mechanics of human sexuality is a physics 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 Mechanics of human sexuality rather than just read about it. In short: The mechanics of human sexuality or mechanics of sex, or more formally the biomechanics of human sexuality, is the study of the mechanics related to human sexual activity. Examples of topics include the biomechanical study of the strength of vaginal tissues and the biomechanics of male erectile function.

Key takeaways

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

Reference excerpt

The mechanics of human sexuality or mechanics of sex, or more formally the biomechanics of human sexuality, is the study of the mechanics related to human sexual activity. Examples of topics include the biomechanical study of the strength of vaginal tissues and the biomechanics of male erectile function. The mechanics of sex under limit circumstances, such as sexual activity at zero-gravity in outer space, are also being studied. Pioneering researchers studied the male and female genitals during coitus (penile-vaginal penetration) with ultrasound technology in 1992 and magnetic resonance imaging (MRI) in 1999, mapping the anatomy of the activity and taking images illustrating the fit of male and female genitals. In the research using MRI, researchers imaged couples performing coitus inside an MRI machine. The magnetic resonance images also showed that the penis has the shape of a boomerang, that one third of its length consists of the root of the penis, and that the vaginal walls wrap snugly around it. Moreover, MRI during coitus indicate that the internal part of the clitoris is stimulated by penile-vaginal movements. These studies highlight the role of the clitoris and indicate that what is termed the G-spot may only exist because the highly innervated clitoris is pulled closely to the anterior wall of the vagina when the woman is sexually aroused and during vaginal penetration.

References

Further reading Bondil, P; Costa, P; Daures, JP; Louis, JF; Navratil, H (1992). "Clinical study of the longitudinal deformation of the flaccid penis and of its variations with aging". European Urology. 21 (4): 284–6. doi:10.1159/000474858. PMID 1459150. Traxer, Olivier; Haab, François; Anidjar, Maurice; Gattegno, Bernard; Cussenot, Olivier; Thibault, Philippe (1999). "Comparaison des propriétés biomécaniques de l'ancrage vaginal dans les suspensions du col vésical selon la technique de Burch et une technique percutanée" [Comparison of biomechanical properties of the vaginal fixation in bladder neck suspensions according to the Burch technique and a percutaneous technique] (PDF). Progrès en Urologie (in French). 9 (4): 727–30. PMID 10555228. Archived from the original (PDF) on 2013-06-03. Retrieved 2010-10-05.

Illustrations

Worked examples

Example 1 — a first encounter with Mechanics of human sexuality

Start with the simplest possible case. Write down what Mechanics of human sexuality claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, 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 Mechanics of human sexuality 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 Mechanics of human sexuality 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 Mechanics of human sexuality

In research: Mechanics of human sexuality appears in physics 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 Mechanics of human sexuality 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: Mechanics of human sexuality is common in secondary-school and first-year university syllabi. It links to neighbouring topics Biomechanics, Human sexuality, so understanding it makes those chapters shorter.
In everyday life: Look for Mechanics of human sexuality 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 Mechanics of human sexuality in 20 minutes

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

Frequently asked questions

What is Mechanics of human sexuality in simple terms?

Why does Mechanics of human sexuality matter?

Because it connects several physics 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 Mechanics of human sexuality?

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 Mechanics of human sexuality.