--%>
Assignment Help - homework help

Neurotransmitter of neuromuscular junction

What do you mean by the neurotransmitter of neuromuscular junction? Explain, how the nervous system triggers the muscle contraction?

E

Expert

Verified

Nervous cells which result in contraction of muscles are motor neurons. The neurotransmitter of motor neurons is known as acetylcholine. Whenever a motor neuron gets excited the depolarizing current flows all along the membrane of its axon until reaching the synapse at neuromuscular junction: the neural impulse passage zone between the sarcolemma and the axon extremity. Near to the axonal extremity the depolarization permits entrance of the calcium ions to the axon. The calcium ions stimulate neuron in order to release acetylcholine in synapse. Then acetylcholine binds to the special receptors in outer surface of sarcolemma, permeability of this membrane is changed and action potential gets created. Depolarization is conduced all along the sarcolemma to sarcoplasmic reticulum which therefore releases calcium ions for the contraction of the sarcomere.

   Related Questions in Biology

  • Q : Presence of exoskeleton-Small size of

    How does presence of the exoskeleton describe basic small size of the arthropods?

    		•
  • Q : Define Mass Merchandising Mass

    Mass Merchandising: A practice in which a large group of individuals, as a group of employees, all assure with similar company, and remit premiums into a lump sum. Plan for insure particular members of a group, as employees of firms or members of labo

    		•
  • Q : Characterization of respiratory system

    How is the respiratory system in the aquatic molluscs characterized? What adaptive respiratory structure does terrestrial molluscs exists?

    		•
  • Q : Importance of Customer to an

    Explain in your own words the value of a customer to an organization and what supporting methodology should be used to ensure their satisfaction and what elements should be applied to the methodology to ensure the information received is salient.

    		•
  • Q : Which kinds of food encompass chemical

    By usually dividing food into fats, carbohydrates and proteins and considering the digestive procedure until the pylorus (that is, exit of stomach), which of such mentioned kinds of food encompass already undergone chemical digestion?

    		•
  • Q : Resource Management and Allocation

    Resource Management and Allocation:A) When resources are not capable of meeting peak demand requirements and are constrained, the project manager has to: Level resource usage. Prioritise and

    		•
  • Q : Strategic Management Project Assignment

    follow the guidelines mentioned in Individual Project Guidelines_VS.docx and the Project should be in Strategic Management. Use the document (b) as an example and develop the project. The quality should be excellent as per the American Universities and the person should be qualified MBA(Strategic M

    		•
  • Q : Germ layers present in the cnidarians

    Which germ layers present in the cnidarians? Which tissues of animal do they originate?

    		•
  • Q : What do you mean by the term Aquaculture

    What do you mean by the term Aquaculture? Also state the major kinds of aquaculture?

    		•
  • Q : Role of flagellum of sperm cell Specify

    Specify the role of flagellum of the sperm cell? How is it generated?

    		•