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Anatomical variations are categorized into three types including morphometric (size or shape), consistency (present or absent), and spatial (proximal/distal or right/left). [ 1 ] Variations are seen as normal in the sense that they are found consistently among different individuals, are mostly without symptoms, and are termed anatomical ...
Cun - width of the human thumb, at the knuckle; Dactylos - Ancient Greek finger breadth; Digit - length of a human finger Digitus - Ancient Roman digit; Etzba - fingerbreadth; Fathom - the distance between the fingertips of a human's outstretched arms; Finger; Fistmele - the measure of a clenched hand with the thumb extended; Gradus - Ancient ...
The human body consists of biological systems, that consist of organs, that consist of tissues, that consist of cells and connective tissue. The history of anatomy has been characterized, over a long period of time, by a continually developing understanding of the functions of organs and structures in the body.
On this (latter) metric, the most attractive ratio of leg to body for men (as seen by American women) is 1:1, [12] matching the 'four heads:four heads' ratio above. A Japanese study using the former metric found the same result for male attractiveness but women with longer legs than body were judged to be more attractive. [13]
One study of muscle strength in the elbows and knees—in 45 and older males and females—found the strength of females to range from 42 to 63% of male strength. [32] Males have greater hand grip strength than females. [33] [34] Differences in width of arm, thighs and calves appear during puberty.
The following outline is provided as an overview of and topical guide to human anatomy: Human anatomy is the scientific study of the morphology of the adult human. It is subdivided into gross anatomy and microscopic anatomy. Gross anatomy (also called topographical anatomy, regional anatomy, or anthropotomy) is the study of anatomical ...
the pedal region encompassing the foot; the digital/phalangeal region encompassing the toes. The great toe is referred to as the hallux. The regions of the upper limbs, from superior to inferior, are the axillary region encompassing the armpit, the brachial region encompassing the upper arm, the antecubital region encompassing the front of the ...
On 2021, Stephen Quake guessed that the upper limit of the number of human cell types would be around 6000, based on a reasoning that "if biologists had discovered only 5% of cell types in the human body, then the upper limit of cell types to discover is somewhere around 6000 (i.e., 300/0.05)." [10] Other different efforts have used different ...