Neurotransmitter of neuromuscular junction
What do you mean by the neurotransmitter of neuromuscular junction? Explain, how the nervous system triggers the muscle contraction?
Expert
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.
How is the sound vibration captured by tympanum transmitted through ossicular chain of middle ear?
Write down some diseases which are characterized by the progressive loss of axonal myelin sheath?
Illustrate the quote Origin of sexual reproduction propose by Brad Harrub and Bert Thompson?
Specify the type of muscle tissue which moves the bones?
Explain the subkingdoms in which the plant kingdom is subdivided?
Write down the life cycle of Plasmodium vivax?
What are various diseases characterized by the progressive loss of axonal myelin sheath?
Which is the normal sign of electric charge between two sides of neuron plasma membrane? Describe potential difference (voltage) generated between these two sides? What is that voltage called?
What do you mean by gonads? Explain the male and the female gonads in humans?
Write down the most abundant form in which nitrogen is found in nature.
18,76,764
1960140 Asked
3,689
Active Tutors
1442734
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!