Explanation:
a. Nasal cavity: the epithelium in this zone is meant to provide a physical barrier to the invasion of microorganism or particles, it also secretes and remove mucus and foreign particles, these epithelial cells are also involved in the igE producing process (perpetuating allergic responses. <em>The nose is the first barrier to the air that enters our body, that's why the epithelial cells in this zone focus in filtering foreign particles. </em>
b. Bronchiole: epithelium is ciliated and no ciliated, it becomes cuboidal in smaller passages as it continues to branch. The no ciliated cells, also known as club cells are the ones that produce surfactant. <em>Since bronchioles are passages to direct the air to the alveoles epithelial cells in this zone have adapted to go from larger branches to smaller ones to reach the alveoli. </em>
c. Alveolus: it's composed of two types of cells, type one, that constitute the air-blood barrier and type two, cells that produce surfactant to reduce surface tension to keep the alveolus shape when breathing.<em> Since alveoli's function is to allows oxygen/carbon dioxide to move between bloodstream the epithelial cells in this organ evolved to cover this job.</em>
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Drug use can be defined as the consumption of legal and illegal drugs.
A drug is any substance that changes the way a person thinks, feels, and behaves. Legal drugs such as alcohol and tobacco are commonly used.
Many people take prescription medications such as pain relievers, sleeping pills, and antidepressants under the supervision of a doctor.
However, many prescription drugs are used off-label.
Drug abuse and use of illegal drugs such as cocaine, LSD, amphetamines and heroin can cause problems in people's lives.
Drug use can also affect people's health and relationships. Many people lose their jobs or have financial problems.
In general, people take medications for a variety of reasons.
- To feel good. Drugs can cause intense pleasure.
- Feel better. Some people who suffer from social anxiety, stress, and depression use drugs to reduce anxiety.
- Do better. Some people feel the need to improve their concentration at school or work, or to improve their skills in sports.
- Curiosity and social pressure.
Full question here :
Q. Choose the best answer from the given options. What is drug use in general?
A. Excessive over-the-counter use
B. Illegal drug use only
C. Legal drug use only
D. Legal and illegal drug use
Learn more about drugs here : brainly.com/question/26254731
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Answer:
\rb. To accelerate the heart rate by interfering with vagal impulses
Explanation:
Digoxin is a cardiac glycoside which has both the cardiac as well as the electric effects. The most important electrical effect includes early parasympathomimmetic responses(decrease in heart rate) which are followed by late arrhythmogenic actions. Thus the parasympathetic effects of digoxin specifically on atria and AV node results in a decrease in heart rate while atropine in given in this condition because it is a parasympatholytic drug thus it reverses the bradycardia induced by digoxin by interfering with vagal impulses and increases the heart rate .
Hence the option \rb. To accelerate the heart rate by interfering with vagal impulses is true.
Jellyfish have glowing protein as well as fireflies, corals, species of fish and certain species of frogs. Basically any animal or plant you see in nature that produces its own fluorescent light.
