1. Action potential reaches the axon terminal and depolarizes it.
2. Depolarization opens voltage-gated calcium channels, enabling influx of Ca into the neuron.
3. Calcium binds to specialized proteins on vesicles (containing pre-made acetylcholine) and triggers them to fuse with the neuron membrane at the synapse.
4. Exocytosis of acetylcholine into the synaptic cleft occurs.
5. Acetylcholine diffuses across the synapse and binds to nicotinic receptors on the end plate of the myocyte.
6. Activated nicotinic receptors, themselves ion channels, cause cation influx into the myocyte and generate an end plate potential. This eventually gives rise to the full depolarization within the myocyte that enables contraction.
Answer:
Cork is a protective tissue that separates the living cells of the plant from the outside environment. The formation of cork in the periderm is the result of the activity of a secondary meristem, the cork cambium, or phellogen.
Explanation:
Answer:
True
Explanation:
The lumen of a blood vessel helps determine blood pressure as blood flows through lumen and bp is measured in the lumen of artery
The nitrogen base will be uracil
Answer is C) - Nuclear power produces no carbon dioxide emissions unlike coal or oil power production.
Nuclear power use natural Uranium to make energy and water is used as cooling process. Hence, nuclear power production uses natural resources.
The waste is very harmful in nuclear power production. That should be managed by a proper way.
Although nuclear power can produce a huge energy, the availability of nuclear power is less than coal and fossil fuels.
But the greatest benefit of nuclear power is, it does not emit carbon dioxide which contributes to global warming.
