In which diagnostic system, piezoelectric effect and reverse piez

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 Multiple Choice QuestionsMultiple Choice Questions

211.

The carcinoma, a type of cancer, originates from

  • blood

  • connective tissue

  • epithelial tissue

  • lymph gland


212.

Humoral immunity is mediated by

  • cytotoxic T-cell

  • plasma cell

  • eosinophil

  • neutrophil


213.

The expanded name of MRI is

  • Medical Reserach Instrument

  • Magnetic Resonance Imaging

  • Magnetic Research Institute

  • Medical Resonance Imaging


214.

Which one of the following genus of insects prefer to breed in clean water and their larvae lie parallel to the surface of water?

  • Anopheles

  • Culex

  • Aedes 

  • Phlebotomus


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215.

Which one of the following is a correct match?

  • Filariasis - Taenia solium 

  • Encephalitis - Culex vishnui

  • Malaria - Phlebotomus sp.

  • Kala-azar - Anopheles stephensi


216.

Infection of Ascaris usually occurs by

  • drinking water containing egg of Ascaris

  • eating imperfectly cooked port

  • tse-tse fly

  • mosquito bite


217.

The cell-mediated immunity inside the human body is carried out by

  • T-lymphocytes

  • B-lymphocytes

  • thrombocytes

  • erythrocytes


218.

Intermediate host of malarial parasite is

  • pig

  • man

  • mosquito

  • larva of mosquito


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219.

Which of the following human parasites require mosquito to complete their life-cycle?

  • Ascaris tumbricoides and Wuchereria bancrofti

  • Leishmania donovani and Plasmodium ovale

  • Ascaris lumbricoides and Leishmania donovani

  • Wuchereria bancrofti and Plasmodium ovale


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220.

In which diagnostic system, piezoelectric effect and reverse piezoelectric effect are involved?

  • EEG

  • CAT

  • USG

  • MRI


C.

USG

Piezoelectric Effect is the ability of certain materials to generate an electric charge in response to applied mechanical stress. Also, it can be defined as the conversion of electrical energy to mechanical energy. The inverse piezoelectric effect refers to a deformation of the materials that results from the application of an electric field. 

Ultrasound is produced and detected using an ultrasound transducer. Which are capable of sending an ultrasound and then the same transducer can detect the sound and convert it to an electrical signal to be diagnosed. To produce an ultrasound, a piezoelectric crystal has an alternating current applied across it. The piezoelectric crystal grows and shrinks depending on the voltage run through it.


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