Answer:
A- Acetylcholine is released by axon terminals of the motor neuron.
Explanation:
The general mechanism of muscle contraction can be explained as follows:
a) The action potential which is generated, travels along the motor nerve to its ends on muscle fiber (or motor end plate) at the neuro-muscular junction.
b) The nerve endings then secrete small amounts of neurotransmitter called acetylcholine.
c) The actylecholine binds to the receptors on the membrane of muscle fiber and opens the voltage gated sodium channels.
d) Opening of these channels leads to flow of large quantities of sodium ions into the muscle fiber which ultimately results in initiation of action potential in muscle fiber.
e) This action potential depolarizes the fiber including the T-tubules, triggering the release of calcium ions from sarcoplasmic reticulum.
f) The calcium ions thus released initiated the process of muscle contraction.
Answer:
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Explanation:
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Photosynthesis? Its when a plant takes in sunlight for ATP (energy).
Answer:
Possible options are:
a. the microbe would survive inside the phagocyte
b. the microbe would be expelled from the residual body
c. the microbe would be killed by the lysosome's enzymes
d. the microbe would cause the phagocyte to go through apoptosis
Answer is A
Explanation:
If microbe were capable of preventing a phagosome from fusing with a lysosomes it means microbes would survive inside phagocyte.The bacteria survive inside of phagosomes because they prevent the discharge of lysosomal contents into the phagosome environment. Specifically, phagolysosome formation is inhibited in the phagocyte.
