Tag: evs - i

Rheumatic fever is an inflammatory disease, that can occur after an infection of the throat with bacterium, Streptococcus pyogenes or group A streptococcus.  Various corticosteroid, such as prednisone may be given for treatment.
Acute glomerulo-nephritis is inflammation of the glomeruli. Corticosteroids and immune-suppressing drugs are taken to control inflammation.
Rheumatoid arthritis is a chronic inflammatory disorder that typically affects the small joints in the hands and feet. NSAIDs or non-steroidal anti-inflammatory drugs are given to relieve pain and inflammation and also, corticosteroid, such as prednisone.
Thus, the correct answer is option D

Valium (diazepam) is a member of benzodiazepine drugs which act on the brain and nerves (central nervous system) to produce a calming effect. It is used to relieve anxiety and nervousness. After taking a valium, a person feels calmness, relaxation, and drowsiness. It is also used to relieve muscle spasms and to provide sedation before medical procedures. It works by enhancing the effects of a certain natural chemical in the body (GABA). Hence, the correct answer is option D.

Aspirin is the non-steroidal anti-inflammatory drug. It is used to reduce fever and pain. Aspirin, a longtime antidote for the side effects of drinking, may actually enhance alcohol's effect. Aspirin significantly lowered the body's ability to break down alcohol in the stomach. Aspirin interferes with the action of an enzyme in the stomach lining called alcohol dehydrogenase and erodes the mucosal lining of the stomach, which breaks down a portion of each drink consumed before it enters the bloodstream. Aspirin probably has no effect on alcohol once it has been absorbed and is circulating.

The chyle entering the large intestine consists of about 75% water and some fatty and proteinaceous substances. Water is absorbed into the blood as the waste materials move through the colon. The symbiotic bacteria E. coli and Streptococcus faecalis normally residing in the human healthy colon, feed on protein contents of chyle, breaking them into amino acids which are absorbed into the blood. The colon bacteria also synthesize vitamin B1, B2, biotin, folic acid and K which are absorbed. They convert bile pigments into brown pigments that give colour to faeces. Intestinal bacteria also produce foul-smelling compounds and gases (methane. hydrogen sulphide) which give the characteristic odour to intestinal gas and faeces. The intestinal bacteria also help prevent pathogenic microorganisms from establishing in the intestine. 

Taenia coli are  three bands of smooth muscles which runs in the length of large intestine. Taenia coli contract lengthwise to produce the haustra, the bulges in the colon.

Large intestine is differentiated into three parts cecum, colon and rectum. Cecum continues into colon. Colon is the middle part of large intestine. The longitudinal muscle coat forms three ribbon like bands called teniae coli. Due to the presence of teniae, pouch like structure develops in lumen of colon called as haustra. The colon then continues in a uniform tube called rectum, which is the storage chamber for faeces.

The solid portion of the earth is called the Lithosphere. It comprises the rocks of the earth’s crust and the thin layers of soil that contain nutrient elements which sustain organisms.

North America is the third largest continent of the world. It is linked to South America by a very narrow strip of land called the Isthmus of Panama.

The lithosphere is the solid, outer part of the Earth. The lithosphere includes the brittle upper portion of the mantle and the crust, the outermost layers of Earth's structure. It is bounded by the atmosphere above and the asthenosphere below.

• During the middle of the 19th century, Africa was referred to as the "Dark Continent," because little was known about the mysterious land itself.
  
•  The term "Dark Continent" was most likely used for the first time by United States explorer and journalist Henry Stanley.
  
•  The reason was that very little was known about Africa - other that its external borders until the Scramble for Africa. Livingstone and other explorers in the middle to late 19th Century "discovered" and mapped internal Africa.