Using a Transducer to Transmit Ultrasound Waves into the Chest

question 72

Multiple Choice

Using a transducer to transmit ultrasound waves into the chest is a diagnostic test for cardiovascular disease called

• A)a chest X-ray.
• B)an electrocardiogram.
• C)an echocardiogram.
• D)computed tomography.

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Definitions:

Antigen-MHC Complex

A molecular complex on the cell surface where an antigen is presented by major histocompatibility complex molecules for recognition by T-cells.

T Cytotoxic Cells

A type of T cell that kills cancer cells, cells that are infected (particularly with viruses), or cells that are damaged in other ways.

Cell-Mediated Immunity

A type of immune response that does not involve antibodies but rather the activation of phagocytes, antigen-specific cytotoxic T-lymphocytes, and the release of various cytokines in response to an antigen.

B Cells

A type of white blood cell that plays a vital role in the immune system by producing antibodies to combat pathogens.