Write paper on PREHENSION Research Example | Topics and Well Written Essays - 500 words

Write on PREHENSION - Research Paper Example movements of the several segments of fingers and hand we can hold, maintain, release, take the hand to objects or handle them and move them in all directions. Although the hand has multiple functions, the essential function is prehension. Such capacity appears from the tweezers lobster to the hand of the monkey, but in humans prehension reached its highest degree of functionality. This is due to a particular provision of thumb, which may object to all other fingers (Kapandji 1980).Human manipulative tasks are carried out by hand movements, that frequently involve forceful movements and prehension. The movement of the thumb causes the hand to be aligned with the forearm, resulting in a slight ulnar deviation of the wrist. The large number of muscles and joints of the hand obviously provides the equipment for numerous and varied patterns of movement. Not so evident, but equally important in determining complexity and dexterity of motion, are the large areas of the cerebral cortex given over to the coordination of motion and sensation in the hand. Thus, in the motor cortex the area devoted to the hands approximately equals the total area devoted to arms, trunk, and legs.  This circumstance ensures great potentiality for coordinated movement and for learning new activities. Similarly, the sensory areas are large, so that they determine such advanced functions as stereognosis, the ability to recognize the shape of an object simply by holding it in the hand. The great tactile sensitivity of the hand is, of course, in large part due to the rich supply of sense organs in the hand surface itself. The threshold for touch in the finger tip, for example, is 2 gm. per sq. mm. as compared to  33  and 26 for the forearm and abdomen respectively. Insertion of flexor and extensor muscle systems into several major segments along the proximal distal axis provides a variety of flexion extension patterns in the digits. With these attachments, fixation of carpal and metacarpal

Globalization in Morocco Essay Example | Topics and Well Written Essays - 1500 words

Globalization in Morocco - Essay Example The population of Morocco is approximately 33,757,175 (World Fact Book) with a mixture of ethnic groups like Muslims, Christians, Arabs, Jewish and others. The official language spoken is Arabic and its dialects and the language used for business is French. Their legal system is based on Islamic law and French and Spanish civil law systems. The economic policies of Morocco brought some stability to the country in the 1990’s but could not initiate sufficient growth to put an end to the prevailing unemployment problems. The problem worsened when draught reduced the output in agriculture and as a result wheat had to be imported at sky rocketing world prices. Trying to build up small and medium enterprises and its continued dependence on foreign energy slowed down the economy still further. Therefore Moroccan authorities realize that understanding the reasons for their poverty and providing jobs to beat the problem of unemployment and improving agriculture are the key points necessary to improve domestic security and further development. To improve the living conditions of its people the Moroccan Government is trying to implement a few reforms in their effort of opening its economy to foreign investors. Their currency the dirham is wholly convertible only for current account transactions. In 2005, the Moroccan Government launched the National Initiative for Human Development (INDH), a $2 billion social development plan that addressed the poverty and unemployment issues of the country and to improve the conditions of the urban slums in the country. (World Fact Book) In 2006, it also took part in the FTA (Free Trade Agreement) (World Fact Book) with the United States to resolve some of the long term issues associated with improvement in education and Job prospects for Moroccan youth. The FTA is also responsible for bridging the gap between the rich and the poor by encouraging tourism and boosting competition in the textile