the contraction of muscles
61Origin (anatomy) — The anatomical origin is a concept used when describing muscles, tendons, ligaments, nerves, and blood and lymph vessels. While it often has a slightly different meaning depending on which kind of origin is referred to,[1] it is generally used to …
62Embouchure — The embouchure is the use of facial muscles and the shaping of the lips to the mouthpiece of a wind instrument.The word is of French origin and is related to the root bouche (fr.), mouth .The proper embouchure allows the instrumentalist to play… …
63History of electromagnetism — The history of electromagnetism, that is the human understanding and recorded use of electromagnetic forces, dates back over two thousand years ago, see Timeline of electromagnetism. The ancients must have been acquainted with the effects of… …
64Wrist curl — The wrist curl is a weight training exercise for developing just the wrist flexor muscles of the forearm. It is therefore an isolation exercise. Ideally, it should be done in combination with the reverse wrist curl to ensure equal development of… …
65Breathing — The process of respiration, during which air is inhaled into the lungs through the mouth or nose due to muscle contraction, and then exhaled due to muscle relaxation. * * * Inhalation and exhalation of air or gaseous mixtures. SYN: pneusis.… …
66Ridged band — The ridged band is believed to be an anatomically distinct part of the foreskin. John R. Taylor, a Canadian pathologist and medical researcher, first described the ridged band at the Second International Symposium on Circumcision , organized by… …
67Acoustic reflex — The acoustic reflex (stapedius reflex, attenuation reflex, or auditory reflex) is an involuntary muscle contraction that occurs in the middle ear of mammals in response to high intensity sound stimuli.When presented with a high intensity sound… …
68Chondromalacia patellae — The patellofemoral syndrome (PFS), the most common cause of chronic knee pain. PFS characteristically causes vague discomfort of the inner knee area, aggravated by activity (running, jumping, climbing or descending stairs) or by prolonged sitting …
69Housemaid's knee — The patellofemoral syndrome (PFS), the commonest cause of chronic knee pain. PFS characteristically causes vague discomfort of the inner knee area, aggravated by activity (running, jumping, climbing or descending stairs) or by prolonged sitting… …
70Knee jerk — The reflex tested by tapping just below the knee causing the lower leg to suddenly jerk forward. What is tapped to elicit this reaction is the patellar tendon, the tendon that runs down from the quadriceps muscle in the front of the thigh, over… …
