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In biology, a motor unit is made up of a motor neuron and all of the skeletal muscle fibers innervated by the neuron's axon terminals, including the neuromuscular junctions between the neuron and the fibres. [1] Groups of motor units often work together as a motor pool to coordinate the contractions of a single muscle.
Anatomical analysis has validated this evolutionary prediction: in the average adult human, the motor pool for the tongue contains between 7,093 and 8,817 motor neurons. This neuron density far exceeds that measured in other mammals, and even exceeds the motor pool size for many muscles in the human body: biceps brachii , for example, is ...
The gradient of motor unit force is correlated with a gradient in motor neuron soma size and motor neuron electrical excitability. This relationship was described by Elwood Henneman and is known as Henneman's size principle , a fundamental discovery of neuroscience and an organizing principle of motor control.
Kinesiology (from Ancient Greek κίνησις (kínēsis) 'movement' and -λογία-logía 'study of') is the scientific study of human body movement. Kinesiology addresses physiological, anatomical, biomechanical, pathological, neuropsychological principles and mechanisms of movement.
Feedback is regarded as a critical variable for skill acquisition and is broadly defined as any kind of sensory information related to a response or movement. [7] Intrinsic feedback is response-produced — it occurs normally when a movement is made and the sources may be internal or external to the body.
Kinaesthetics (or kinesthetics, in American English) is the study of body motion, and of the perception (both conscious and unconscious) of one's own body motions. [1] Kinesthesis is the learning of movements that an individual commonly performs. [ 2 ]
Woodlouse activity decreases as humidity increases.. Kinesis, like a taxis or tropism, is a movement or activity of a cell or an organism in response to a stimulus (such as gas exposure, light intensity or ambient temperature).
Exercise physiology is the physiology of physical exercise. It is one of the allied health professions , and involves the study of the acute responses and chronic adaptations to exercise. Exercise physiologists are the highest qualified exercise professionals and utilise education, lifestyle intervention and specific forms of exercise to ...