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DochEvi [55]
2 years ago
5

"botox injections smooth facial wrinkles because _____ is an acetylcholine antagonist that blocks the underlying facial muscles.

"
Biology
2 answers:
Lapatulllka [165]2 years ago
8 0

Answer:

Botulinum

Explanation:

Botox is used cosmetically to remove wrinkles and to treat certain muscular conditions. It is made from Botulinum neurotoxin obtained from the bacteria <em>Clostridium botulinum</em>. It is a very powerful neurotoxin but in Botox procedure it is used in extremely small concentration so it does not cause harmful effects. Botox process usually lasts for four to six months.

Botulinum acts as acetylcholine antagonist and inhibits the release of acetycholine neurotransmitter at the neuromuscular junction. This inhibits the signalling between motor neurons and facial muscles. As a result, the facial muscles are not able to contract and hence wrinkles are not formed on skin.

nevsk [136]2 years ago
5 0

Answer;

-Botulin

Explanation;

Botox injections smooth facial wrinkles because botulin is an ACh antagonist that blocks the underlying facial muscles.

-Botox injections are the best known of a group of medications that use various forms of botulinum toxin to temporarily paralyze muscle activity. This toxin is produced by the microbe that causes botulism, a type of food poisoning.

-These botox injections have the ability to reduce the appearance of some facial wrinkles. They are also used to treat such problems as repetitive neck spasms, excessive sweating, overactive bladder and lazy eye.

-Botulinum toxin acts by binding presynaptically to high-affinity recognition sites on the cholinergic nerve terminals and decreasing the release of acetylcholine, causing a neuromuscular blocking effect.

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Answer:

in male lion, two methyl groups are present in its structure  while in female lion, two hydroxl groups are present in its structure

Explanation:

The chemical structure of the carbon atom is different in both male and female lion because both male and female lions have different sex harmones which are totally different from one another. In male lion, testosterone is a sex hormone whose chemical formula is C19H28O2 and two methyl groups and one hydroxl group are present in its structure while in female lion, oestradiol is a sex hormone having a chemical formula C18H24O2  and two hydroxyl groups are present.

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adell [148]

Answer:

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Caffeine is  central-nervous-system stimulant and the mechanisms of its action usually are: mobilization of intracellular calcium or inhibition of specific phosphodiesterases.

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2 years ago
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Answer:

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1 year ago
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satela [25.4K]
I had this problem before I put 75%
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