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.
Name the valve which separates the right ventricle from pulmonary artery? Why is that valve significant?
Contract Negotiations: The contract negotiation is any discussion, either in person or via electronic means, which has as its main goal to come to a written agreement regarding a business matter. Such a contract can be for almost anything, though the
Explain the working of the contraceptive diaphragm? Specify the limitations of this contraceptive method?
Describe Lungs? Briefly explain it.
Name the fruiting bodies existed in some fungi?
List in order the steps involved in the break down of glucose
Inventory Planning: It is the process of determining the optimal quantity and timing of inventory for the aim of aligning it with production and sales capacity. Inventory planning has a direct impact on company's cash flow and gain margins particularl
Define the term hexoses? What are some illustrations of hexoses with significant biological functions?
State the generic functions of the leukocytes? What are leukopenia and leukocytosis?
Do octopus and squids have exoskeleton? Answer: Octopus and squids generally do not produce external shell (some squid species can have an internal shell). One cepha
18,76,764
1938007 Asked
3,689
Active Tutors
1422670
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!