JBL EMT Practice Exam

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___________ pressure is the pressure exerted by a liquid that occurs when blood moves through an artery at relatively high pressures.

  1. Diffusion

  2. Hydrostatic

  3. Oncotic

  4. Osmotic

The correct answer is: Diffusion

Hydrostatic is incorrect because it refers to the pressure exerted by a fluid at rest. In this case, we are dealing with a fluid (blood) that is in motion. Oncotic and osmotic pressures generally refer to pressures exerted by proteins and solutes, respectively, not liquid movement. Diffusion refers to the movement of molecules from an area of high concentration to an area of low concentration, which is not the concept being described in the question. Therefore, A is the best answer for this question.

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