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salantis [7]
2 years ago
13

A clue that you are dealing with a really complex organism is:

Biology
1 answer:
Leto [7]2 years ago
6 0

uhhhhh I think that its A

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The neuromuscular junction is a well-studied example of a chemical synapse. Which of the following statements describes a critic
WITCHER [35]

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.

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2 years ago
When two species have a very
Nesterboy [21]

Answer:

i say competition

Explanation:

i say competition because they are the same so they might fight alot for resources

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3 years ago
How to increase white blood cell count in dogs?
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Which of the following statements is true for a cell placed in beaker containing an isotonic solution?
loris [4]
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3 years ago
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When muscle tissue dies, it usually is replaced with dense collagenous connective tissue. How do these tissues differ in structu
Korolek [52]

Answer:

Damaged muscle tissue is replaced by fibrous scar tissue. This is called as 'Fibrosis'. Thicker than the surrounding tissue, scar tissue is paler and denser because it has a limited blood supply; although it takes the place of damaged or destroyed tissue, it is limited in function, including movement, circulation, and sensation.

Dense irregular connective tissue contains fibroblasts scattered amongst randomly oriented collagen fibers, whereas muscular tissues contain multinucleated muscle cells that are able to contract upon stimulation. Because the connective tissue cells cannot contract, the muscle will lose strength, and so muscle function will become impaired.

7 0
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