Final Answer:
When taking a blood pressure, the first sound that is heard when the pressure in the cuff is slowly released and blood flow just starts to resume through the partially collapsed artery is known as the a) Systolic.
Step-by-step explanation:
Systolic: The correct answer is (a) Systolic. This refers to the first sound heard during blood pressure measurement, occurring when the heart contracts and pushes blood into the arteries. It indicates the maximum pressure exerted by the heart.
Diastolic and Mean Arterial: While these are essential components of blood pressure, they do not correspond to the described sound. Diastolic (b) is the pressure in the arteries when the heart is at rest between beats, and Mean Arterial (c) is an average pressure throughout the cardiac cycle.
Pulse Pressure: This is the difference between systolic and diastolic pressures but does not represent the specific sound mentioned in the question.