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stealth61 [152]
3 years ago
12

A student explains the formation of the planetary system as follows.

Biology
1 answer:
Galina-37 [17]3 years ago
4 0
<span>A. The nebula contracts and shrinks instead of expanding

</span><span>Nebula is the cloud of interstellar dust and gas that forms a star. It is collborately shaped during colliding and collapsing of the interstellar mediums this is influenced by the gravitational attraction of the atoms and particles in the entites. Hence, there are three types of nebular namely, are classical nebula, diffuse nebula, planetary nebular and supernova remnants.</span>
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drugs that stimulate alpha receptors, causing constriction of peripheral vessels, are group of answer choices autonomic blocking
Dima020 [189]

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The main neurotransmitter of the parasympathetic nervous system, acetylcholine (ACh), is mimicked or modified by parasympathomimetic medications to have their desired effects. Depending on whether they are direct or indirect agonists of acetylcholine ACh, parasympathomimetic drugs fall into one of two basic types. While indirect agonists raise synaptic levels of Acetylcholine ACh by decreasing the enzyme acetylcholinesterase, direct agonists directly bind and activate muscarinic ACh receptors.

Providers of healthcare should keep an eye on patients receiving parasympathomimetic drugs to make sure the treatment has the desired therapeutic impact. Parasympathetic Patients must be continuously monitored by the provider for any potential side effects. Due to the overstimulation of acetylcholine receptors, an overdose may cause a potentially fatal cholinergic crisis. There are several different formulations of parasympathomimetic drugs available to treat acetylcholine. To cure glaucoma and induce miosis during surgical operations, for instance, topical formulations of carbachol and pilocarpine are available for ocular use. Neostigmine is administered parenterally to treat paralytic ileus and act as a bladder agonist.

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3 0
1 year ago
The phrase of immune response in which suppressor t cells halt it and restore the body's natural balance is called
vlabodo [156]

The answer is inflammatory response. T –suppressor (now referred to as T-regulatory cells) are significant in the negative feedback loop in inflammation. Therefore they downregulate inflammation when an infection has been eliminated.  Only when there is an infection in the body does other factors reduce the suppression by Tregs.






3 0
3 years ago
What system is it: Responding to the environment
weqwewe [10]
Nervous system responds to the environment
6 0
3 years ago
Stem cells are -
Tatiana [17]

Answer:

The correct answer is A or 1 or the first answer choice

6 0
2 years ago
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Which is an abiotic factor that can be found in a rain forest ecosystem?
bagirrra123 [75]

Answer:

rainfall

Explanation:

there is a high rate of rainfall in rainforest, therefore amount of rain fall being abiotic factor can affect rain forest

6 0
1 year ago
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