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Orthostatic intolerance occurs in humans because standing upright is a fundamental stressor, so requires rapid and effective circulatory and neurologic compensations to maintain blood pressure, cerebral blood flow, and consciousness. When a human stands, about 750 ml of thoracic blood are abruptly translocated downward.
Standing, also referred to as orthostasis, is a position in which the body is held in an upright (orthostatic) position and supported only by the feet. Although seemingly static, the body rocks slightly back and forth from the ankle in the sagittal plane , which bisects the body into right and left sides.
Standing with folded arms; Standing contrapposto, with most of the weight on one foot so that its shoulders and arms twist off-axis from the hips and legs in the axial plane; Standing at attention, upright with an assertive and correct posture: "chin up, chest out, shoulders back, stomach in", arms at the side, heels together, toes apart
Misericord from the Charterhouse of Florence (Tuscany, Italy), depicting a mascaron With the seat lifted (as at left), the misericord provides a ledge to support the user. A misericord (sometimes named mercy seat, like the biblical object) is a small wooden structure formed on the underside of a folding seat in a church which, when the seat is folded up, is intended to act as a shelf to ...
The Ivy League nude posture photos were taken in the 1940s through the 1970s of all incoming freshmen at Harvard, Yale, Princeton, the University of Pennsylvania (which are members of the Ivy League) and Seven Sisters colleges (as well as Swarthmore), ostensibly to gauge the rate and severity of rickets, scoliosis, and lordosis in the population.
The Cossack Drag or Death Drag. Trick riding by Mr. Price in the 18th Century Roman riding Stunt riding at the King of the Ranges competition day, Murrurundi, NSW. Trick riding refers to the act of performing stunts while horseback riding, such as the rider standing upright on the back of a galloping horse, using a specially designed saddle with a reinforced steel horn, and specialized kossak ...
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For example, as humans are approximately bilaterally symmetrical organisms, anatomical descriptions usually use the same terms as those for other vertebrates. [59] However, humans stand upright on two legs, meaning their anterior/posterior and ventral/dorsal directions are the same, and the inferior/superior directions are necessary. [60]