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Answer : B

A diagnostic technique that detects regions of heat and cold in the body is called thermography. Thermography involves the use of infrared cameras to capture temperature variations on the surface of the body. This technique is useful for identifying areas of inflammation, abnormal blood flow, and other conditions that cause changes in skin temperature.

Answer : B

A technique that employs high-frequency, inaudible sound waves which bounce off body tissues and are then recorded is called a sonogram or echogram. This imaging technique is widely known as ultrasound and is commonly used in medical diagnostics to visualize muscles, tendons, and internal organs, capture their size, structure, and any pathological lesions. Reference: Nationally Registered Certified Medical Assistant study materials, radiology and imaging textbooks.

Answer : B

Myocardial infarction (MI), commonly known as a heart attack, occurs when blood flow to a part of the heart muscle is blocked for an extended period, leading to damage or death of the heart muscle cells. This blockage is usually caused by a buildup of plaque in the coronary arteries, which supply blood to the heart muscle. Plaque is composed of fat, cholesterol, and other substances. When a plaque ruptures, it can form a clot that obstructs the blood flow. Symptoms of an MI include chest pain, shortness of breath, nausea, and sweating. Immediate medical attention is crucial to restore blood flow and minimize heart damage.

Answer : D

When a patient is bleeding heavily from a wound, the immediate priority is to control the bleeding. The best initial action is to apply direct pressure to the wound using a clean cloth or bandage. This helps to stem the flow of blood and allows time for clotting to begin. Elevating the limb can also help reduce blood flow to the area, but applying direct pressure is the primary and most effective method. Tourniquets are used only as a last resort when direct pressure and elevation do not control the bleeding.

American Red Cross First Aid Manual

Emergency Care and Transportation of the Sick and Injured (AAOS)

Answer : D

Palpation is done by feeling a part with the hand. It is a technique used by healthcare providers to examine the body through touch to assess the size, shape, firmness, or location of a structure. Palpation is commonly used in physical examinations to detect abnormalities such as swelling, tenderness, or lumps. Reference: Nationally Registered Certified Medical Assistant study materials, clinical examination techniques.