Quotes About Physiology

When you force yourself to laugh, you use different brain circuits and muscles than when you laugh because something is really funny. Humans cannot usually detect the difference. But a biometric sensor could.9

En Homo sapiens, el cerebro supone el 2-3 por ciento del peso corporal total, pero consume el 25 por ciento de la energía corporal cuando el cuerpo está en reposo.

The fact is that a jumbo brain is a jumbo drain on the body. It's not easy to carry around, especially when encased inside a massive skull. It's even harder to fuel. In Homo sapiens, the brain accounts for about 2–3 per cent of total body weight, but it consumes 25 per cent of the body's energy when the body is at rest.

You continually recycle your material body—almost all of it—once a year (stomach lining every five days; skin once a month; skeleton every three months; liver every six weeks; genetic material every six weeks).

No knowledge can be more satisfactory to a man than that of his own frame, its parts, their functions and actions.

Complete knowledge of any alien physiology could be obtained within minutes by Educator Tape, but the skill to use that knowledge—especially in surgery—came only with time.

A frigate bird with a seven-foot wingspan has a skeleton that weighs less than its feathers.

After six months of Premarin, I had another round of levels taken. I was found to have 59 nanograms of estrogen in my system. The average for an adult male is 6. The mean for females is 26.

The human heart: its expansions and contractions, its electrics and hydraulics, the warm tides that move and fill it.

Maybe because the human body was built to float.

Men never feel quite the same about a woman's body once they know it's done that thing: widened and torn to push out a baby's head.

If the labouring woman turned on her right, the uterus might compress the vena cava and reduce blood flow to her heart.)

Men have a brain and a penis, and only enough blood to supply one at a time.

The more you worry, the more you throw off the delicate balance of hormones required for health.

pleasure is just as often a function of our emotional associations as it is of our physical sensations — and for this reason, there can be psychology as well as physiology at play when it comes to pairing beverages with food.

Anatomy is destiny.

The task of physiological psychology remains the same in the analysis of ideas that it was in the investigation of sensations: to act as mediator between the neighbouring sciences of physiology and psychology.

Blood probably tastes like salty water, right?

Tutti dicono che il cervello sia l'organo più complesso del corpo umano, da medico potrei anche acconsentire. Ma come donna vi assicuro che non vi è niente di più complesso del cuore, ancora oggi non si conoscono i suoi meccanismi. Nei ragionamenti del cervello c'è logica, nei ragionamenti del cuore ci sono le emozioni.

Whenever you inhale, you turn on the sympathetic nervous system slightly, minutely speeding up your heart. And when you exhale, the parasympathetic half turns on, activating your vagus nerve in order to slow things down (this is why many forms of meditation are built around extended exhalations).

Basically, your heart is just a dumb, simple mechanical pump, and your blood vessels are nothing more exciting than hoses.

Why else evolve the fusiform? The shape of women's faces changes subtly during their ovulatory cycle, and men prefer female faces at the time of ovulation.

In other cases the challenge is to appreciate how, though human physiology resembles that of other species, we use the physiology in novel ways.

Your heart does roughly the same thing whether you are in a murderous rage or having an orgasm. Again, the opposite of love is not hate, it's indifference.