Answer:
Hematoxylin and eosin (H&E) is the most widely used stain in histology and allows localization of nuclei and extracellular proteins. Hematoxylin, not a dye itself, produces the blue Hematin via an oxidation reaction with nuclear histones causing nuclei to show blue.
Explanation:
Answer: B. blowout fracture.
Explanation:
The blowout fracture or orbital flow fracture is caused by the trauma in the orbital bones. The causes of this fracture are the attack with a blunt object, vehicular accidents, sky fall, blow by a fist and others.
The symptoms of the fracture includes bruising, swelling, redness of eye, double vision (observing two images at the same time), nose bleeds, numbness of cheek, air under the skin below the eye and others.
On the basis of above description, blowout fracture is the suspected fracture in 52 year old women.
Answer:
Tolerance means that due to repititve use of the drug, initial dose is unable to prpduce the same effect beacuse the receptors has been desensitized.
If An initial dose is 100 mg then dose higher than this which may be 2 or 3 times more potent may reverse this tolerance of the drug and it may then produce similar effects at a higher dose.
Explanation:
Tolerance is said to be the decreased response by the drug because of the continuous exposure to the drug at the receptor molecules. Due to this contionuous exposure the receptors become desensitized.
Tolerance occurs when the person no longer responds to the drug in the way that person initially responded. Tolerance can be reversed by increasing the dose of the drug lets say initial dose was 100 mg. To reverse the tolerance, a dose of 500 mg may be required or even more.
Answer:
Oropharynx
Explanation:
Oropharynx is a common route for both the respiratory and the digestive systems.
The passage for the air, and the passage for the food and the liquid (water), begin separately at nose and mouth respectively. Air passes backward through nasopharynx. On the other hand, food and the liquid (water) pass backward through oral cavity. The two passages unite at the oropharynx.
The two passages then separate again in the hypopharynx. The food and the liquid pass backward into esophagus which leads to the stomach. The air we breath passes forward through larynx and then into trachea which leads to the lungs.
Answer:
Superior Vena Cava -> Right Atrium -> Right Ventricle -> Pulmonary Artery -> Lungs -> Left Atrium -> Left Ventricle -> Aorta -> Rest of Body
Answer:
Superior Vena Cava -> Right Atrium -> Right Ventricle -> Pulmonary Artery -> Lungs -> Left Atrium -> Left Ventricle -> Aorta -> Rest of Body is correct!
Mitral regurgitation is a leakage of blood that flows backward via the mitral valve during contraction of the left ventricle which results in systolic murmur.
Explanation:
Mitral valve is seen between the left atrium and left ventricle,it prevents the back flow of blood during left ventricular contraction. In case of mitral valve regurgitation or stenosis condition it results in back flow of blood to left atrium it further results in increased blood pressure in left atrium and fluid buildup in lungs and leads to systolic murmur. During cardiac cycle systole occurs when heart contracts and diastole occurs when heart relaxes.
A systolic murmur, like in Mr. G's case, is caused by a mitral valve defect. The valve leaks during systole, causing abnormal blood flow, which in turn leads to the creation of the murmur.
Mr. G's mitral valve defect could have caused a systolic murmur due to the leaking of the valve. In a healthy heart, the mitral valve should close during the process of systole to prevent the backflow of blood. However, in Mr. G's case, the mitral valve leaks, leading to an abnormal flow of blood. This irregular flow creates a noise known as a murmur. This is specifically termed a systolic murmur because it happens during systole - the phase of the heart beat when the heart muscle contracts and pumps blood out of the heart.
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