Search for dissertations about: "spindle motor"

Showing result 1 - 5 of 9 swedish dissertations containing the words spindle motor.

2. 1. A sensory role for the cruciate ligaments : regulation of joint stability via reflexes onto the γ-muscle-spindle system

   Author : Per Sjölander; Håkan Johansson; Uwe Windhorst; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Joint afferent; Mechanoreceptor; Cruciate ligament; Fusimotor neuron; reflex; muscle spindle afferent; motor control; cat;

   Abstract : Reflex effects evoked by graded electrical stimulation of the posterior articular nerves (PAN) of the ipsi- and contralateral knee joints were investigated using both micro-electrode recordings from 7 - motoneurones and recordings from single muscle muscle spindle afferents. Spindle afferent responses were also recorded using natural stimulation of different types of receptors, to elucidate if the articular reflexes onto the y -motoneurones were potent enough to significantly alter the muscle spindle afferent activity. READ MORE

4. 2. Extra- and intrafusal muscle fibre type compositions of the human masseter at young age. : In perspective of growth and functional maturation of the jaw-face motor system

   Author : Catharina Österlund; Per-Olof Eriksson; Lars-Eric Thornell; Per Stål; Malin Ernberg; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; jaw; limb; human; muscle; morphology; fibre type; myosin heavy chain; muscle spindle; Morphology; Morfologi; anatomi; Human Anatomy;

   Abstract : Muscles control body posture and movement by extrafusal and intrafusal (muscle spindle) fibres. The purpose of this thesis was to provide insight into the muscular basis for human jaw function at young age. READ MORE

5. 3. Microtubule and spindle pole body regulation in the budding yeast mitotic spindle

   Author : Marjan Abbasi; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : The microtubule organizing center (MTOC) is a specialized structure with a main function in microtubule (MT) nucleation and organization. In higher eukaryotes, the main MTOC is known as the centrosome, and its functional equivalent in yeast is the spindle pole body (SPB). READ MORE

6. 4. Human muscle spindles : complex morphology and structural organisation

   Author : Jing-Xia Liu; William K. Ovalle; Umeå universitet; []
   Keywords : human; muscle spindle; intrafusal fiber; aging; biceps brachii; deep muscles of the neck; MyHC; mATPase; SERCA; anatomi; Human Anatomy;

   Abstract : Muscle spindles are skeletal muscle mechanoreceptors that mediate the stretch reflex and provide axial and limb position information to the central nervous system. They have been proposed to play a major role in the pathophysiology of muscle pain. READ MORE

7. 5. On amino acid neurotransmitters in the spinal cord motor nuclei

   Author : Göran Örnung; Karolinska Institutet; Karolinska Institutet; []
   Keywords : neurotransmitter; aspartate; glutamate; GABA. glycine; homocysteate; taurine; ultrastructure; freeze-substitution; immunocytochemistry; bouton; synaptic input; motoneuron; strech reflex; spinal cord; cat. rat;

   Abstract : Using pre- and post-embedding immunocytochemistry, the distribution of six amino acid neurotransmitter candidates, with special reference to y-amino-butyric acid (GABA), glycine and glutamate was examined in boutons apposing somata and dendrites in the lumbar motor nuclei of the cat spinal cord. The monosynaptic connection between muscle spindle I a afferents and motoneurons regarding content of neuroactive amino acid and complement of amino acid receptors in the postsynaptic membrane was studied in the rat. READ MORE