Drawing Dynamic Hands - Vẽ bàn tay - Phần 10

Tài liệu tham khảo tiếng Anh về hội họa - Drawing Dynamic Hands - Vẽ bàn tay - Phần 10 | 10. AGING The hand changes radically from infancy to old age not only in size proportion and structure but also in skin texture tissue structure and surface characteristics such as hair density pigmentation and size shape and texture of fingernails. Its dexterity and capabilities its responsiveness its range of gestures and the subtlety of its emotional communications also change. Studies of the developmental and aging aspects of the hand have sometimes been overlooked in anatomical works. This chapter will trace the development of the hand from infancy to old age. 122 INFANCY The infant hand during the first weeks of life is diminutive about the size of an adult thumb although this varies with individuals. At birth it may be thin and wrinkled or somewhat fleshy but the skin texture is fine and satiny. One important characteristic is that there arc no protrusions such as knuckles or prominent wrist bones which mark points at which forms are joined. Instead the infant hand has only dimpled depressions at the finger segments and fatty rolls at the wrist since the skeletal structure of the hand is only partially formed in the finger and metacarpal shanks. The terminals arc cartilaginous material soft and unformed as arc the wrist bones. The top sketch shows the infant hand at six weeks. Note that the length of the outstretched hand from wrist to tip of middle finger is about the same as that from elbow to wrist. Also note the pudgy look of the fingers and the contractions at the joints as described above. The middle and lower sketches show the infant hand at about four to six months. Already the forms arc more defined the fingers more active the behavior more certain. This shows in the hand becoming much more open rather than curled and closed as in the newborn infant. Also note the emerging knuckles. 123 INFANCY TO ONE YEAR The general character of the baby s hand does not change substantially during the first year. The forms are still squat square and fleshy with .

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15    22    4    30-11-2024
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