Description of neurotransmitter of neuromuscular junction
Give a brief description of neurotransmitter of neuromuscular junction? How does nervous system trigger the muscle contraction?
Expert
Nervous cells which trigger muscle contraction are motor neurons. Neurotransmitter of motor neurons is acetylcholine. When a motor neuron is stimulated depolarizing current flows along the membrane of its axon till reaching the synapse at neuromuscular junction (neural impulse passage zone between axon extremity and sarcolemma). Near the axonal extremity depolarization permits entrance of calcium ions in the axon (note that calcium also has a relevant function here). The calcium ions excite the neuron to liberate acetylcholine in synapse.
Acetylcholine then binds to special receptors into outer surface of sarcolemma, permeability of this membrane is changed and an action potential is created. The depolarization is then conduced along sarcolemma to sarcoplasmic reticulum that thus liberates calcium ions for sarcomere contraction.
What is the basic difference between venous and arterial blood? Answer: Arterial blood is the oxygen-rich and carbon-dioxide poor blood which irrigates the tissues. Venous blood is the oxygen poor and carbon-dioxide rich bl
What is the action method of the antiretroviral drugs termed protease inhibitors and employed against HIV infection?
Why the pteridophytes are better adapted to the dry land as compared to the bryophytes? Were pteridophytes always less abundant rather than the phanerogamic plants?
Importance of organization Organization is the back bone of the management is any enterprise. It establishes the relationship on the one hand betwee
In FIN 620 each student is required to complete a paper that demonstrates effective communication skills, research competence, and technology fluency. The paper should demonstrate the ability to clearly communicate ideas about financial management in a professional ma
Suppose XYZ Airlines Ltd, better known as Superair, is XYZ’s third largest airline. Its passenger service and freighter network covers destinations across the Asia Pacific area. Since of the rising price of crude oil, Superair suffered a huge loss in the past fi
Difference between Management & Leadership Management
How are gases exchanged in sponges?
How carbon dioxide is released by the cellular respiration, transported from the tissues, which is to be eliminated through the lungs?
Matrix organizations According to Stanley Davis and Paul Lawrence, the matrix organization is "any organization that employs a multiple command system that includes
18,76,764
1953564 Asked
3,689
Active Tutors
1434338
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!