Bronchial smooth muscle relaxation and vascular smooth muscle constriction are caused by the direct actions of which system?

1 answer:

7 0

Smooth muscle is present throughout the entire tracheobronchial tree. Bronchial smooth muscle tone is regulated by the vagus nerve, which, when stimulated, causes constriction (bronchospasm), and by the sympathetic nervous system, which produces dilation (bronchodilation).

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Read "Charting the Pathways of Evolution" and answer the questions that follow.Explain the main idea of the article in detail.

IrinaVladis [17]

Answer:

The core concept is the sentence. The start. It's the biggest thought on the subject. There was a mistake. The author will find the principal idea in a paragraph in various ways. The principal concept is normally a phrase, and usually is the first phrase.

Explanation: detailed enough i hope

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3 years ago

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During the process of nerve conduction, a person experiences an increase in synaptic transmissions. Which of the following is a

n200080 [17]

An increase in alcohol consumption

Alcohol can boost GABA activity in the brain in one of two ways: either by acting on the presynaptic cell, which increases GABA release, or. It can influence the postsynaptic (i.e., signal-receiving) neuron, promoting the GABAA receptor's activation.
The brain circuits that regulate motivational processes, such as arousal, reward, and stress, are altered by chronic alcohol consumption. These modifications impact systems that use dopamine, opioid peptides, -aminobutyric acid, glutamate, and serotonin as signaling molecules as well as systems that control the brain's stress response. Frequent episodes of intoxication, obsession with alcohol, use of alcohol in spite of negative effects, and a need to seek out and use alcohol are all signs of alcoholism developing.

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2 years ago

1. Which of these describes a chemical

valentina_108 [34]

The answer is c in my opinion

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4 years ago

How could human activity disrupt the habitat and niche of an organism like the gray fox?

BlackZzzverrR [31]

Answer:

Disruption such as deforestation or mining can destroy the habitat, leading to water pollution, mud slides, and loss of soil. With the habitat affected, the animals the grey fox feeds on, such as rabbits or mice, will be affected as well, leading to the grey fox losing a source of food. By limiting the diet of the grey fox, other predators will be more likely to compete with the grey fox, disrupting its niche.

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3 years ago

In order to make a protein the messenge on DNA must be converted to what?

Soloha48 [4]

Explanation:

-mRNA or messenger RNA

DNA wound into chromosomes within the nucleus is unwound, unzipped and read by enzymes in a complex series of steps known as transcription. The message on DNA, called genes is copied by RNA polymerase, to form mRNA complementary sequence to that of the DNA strand.

Further Explanation:

Nucleic acids are comprised of smaller units called nucleotides and function as storage for the body’s genetic information. These monomers include ribonucleic acid (RNA) or deoxyribonucleic acid (DNA). They differ from other macromolecules since they don’t provide the body with energy. They exist solely to encode and protein synthesis.

Basic makeup: C, H, O, P; they contain phosphate group 5 carbon sugar, these nitrogen bases which may contain single to double bond ring.

Nucleic acids like DNA stores all of an organism’s genetic information. Nucleic acid molecules comprise the nitrogenous bases Guanine, Adenine, Cytosine and Thymine. Conversely, RNA nucleotides are Adenine, Guanine, Cysteine and Uracil. These pair up as base pairs due to their varied structure- largely influenced by the location of N molecule.

In certain combinations, these bases form codons which act as instructions for protein synthesis. Codons are three nucleotide bases encoding an amino acid or signal at the beginning or end of protein synthesis.

RNA codons determine certain amino acids, so the order in which the bases occur within in the codon sequence designates which amino acid is to be made bus with the four RNA nucleotides (Adenine, Guanine, Cysteine and Uracil). Up to 64 codons (with 3 as stop codons) determine amino acid synthesis. The stop codons ( UAG UGA UAA) terminate amino acid/ protein synthesis while the start codon AUG begins protein synthesis.

Thus, these contribute to the broad diversity of living organisms, as varied combinations of these 64 codons can produce many proteins which can be organized into cells, tissues and organisms.

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