Advocates in Bangalore

General Knowledge Pt-IV

What is a kymograph?

Kymograph is an electrical device used in preclinical medical research to record the biological responses (muscular motion, change in BP, and Advocates in Bangalore) of various tissues. It was invented by Carl Ludwig (1847) to record the change in arterial BP. It consists of an electrically driven gear box with a vertical spindle carrying a drum, and is disengaged before changing the gear box or moving the drum manually By convention, the drum rotates in the clockwise direction, so all kymograph records should be read from left to right.

What is the source of allethrin?
Allethrins are compounds used in household insecticides like mosquito coils because they have low toxicity for humans. They are sourced from chrysanthemum flowers, found in Asia and eastern Europe. These plants, which have large white, yellow, pink or red flower heads, are cultivated for ornamental, culinary or insecticidepreparation purposes. The flowers are pulverized and the allethrin compounds found in the seed cells are extracted and sold to insecticide makers.

Advocates in Bangalore Xenotransplantation is the use of non-human animal cells, tissues and organs in human patients. These cells can be implanted or enclosed in a device used outside the body. The tissue is harvested from animals already being butchered. Immune rejection remains the biggest challenge for a xenotransplant. Cross-species transplants are more likely to produce host-vs-graft problems. A worrisome element of xenotransplant is the potential for infectious disease from donor animals which is called xenozoonosis.
What is gradenigo's syndrome?
Gradenigo, an Italian otolaryngologist from the University of Naples, described this syndrome in 1904, Painful anaesthesia in the first division of the fifth cranial nerve supplying the forehead with sixth cranial nerve palsy occurs in this syndrome. It happens as a result of a lesion at the apex of petrous temporal bone outside the dura mater. It may be due to infection, trauma or infiltration of the nasopharyngeal cancer. Additionally, the patient may have deep retro-orbital pain and swelling of the same side of face and scalp. The syndrome may be associated with vertigo and hearing loss. An MRI is better than CT scan for early diagnosis.
Who were the hobbits?
Most know hobbits as the fictional dwarf-like creatures from JRR Tolkein's 'The Lord of the Rings' trilogy. But scientists discovered the fossilized remains of hobbit like creatures in a remote island in Indonesia. They believed them to be a separate species and called them Homo florsiensis or Man of Flores. However, some anthropologists refuted the claim that they were a separate species and said the diminutive size of the hobbit-like cave dwellers was probablydue to an iodine deficiency during pregnancy due to which their growth was stunted.