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Anatomy and Physiology Flashcards

6 cards from real NCCT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Anatomy and Physiology flashcards as text

  1. What percentage of blood is composed of plasma?

    Answer: 55%

    Plasma makes up approximately 55% of blood volume, with the remaining 45% consisting of cellular elements (red cells, white cells, platelets).

  2. Which term describes the collapse of a vein during blood collection?

    Answer: Vein collapse

    Vein collapse occurs when excessive vacuum pressure causes the vein walls to cave inward, blocking blood flow into the tube.

  3. Where is the antecubital fossa located?

    Answer: Inner bend of the elbow

    The antecubital fossa is the triangular depression on the anterior surface of the elbow, where the major venipuncture veins are accessed.

  4. What does the term 'hematocrit' measure?

    Answer: Percentage of blood volume occupied by red blood cells

    Hematocrit (HCT) is the proportion of red blood cells relative to total blood volume, expressed as a percentage.

  5. Which vessel is palpated and avoided during venipuncture because it pulses?

    Answer: Brachial artery

    The brachial artery runs near the antecubital veins and must be avoided during venipuncture to prevent arterial puncture.

  6. What is the normal pH range of human blood?

    Answer: 7.35–7.45

    Normal blood pH is maintained between 7.35 and 7.45; values outside this range indicate acidosis or alkalosis.

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