The nursing instructor is teaching student nurses about the process of hemostasis after an injury. What does the nursing instructor include as the initial event in this process?
1. Platelets become sticky.
2. Plasma proteins convert to active forms.
3. The vessel spasms.
4. Von Willebrand's factor is activated.
Correct Answer: 3
Rationale: The blood vessel spasms, causing constriction during the initial event in the hemostasis process. Platelets do not become sticky during the initial event in the hemostasis process. Von Willebrand's factor is not activated during the initial event in the hemostasis process. Plasma proteins do not convert to active forms during the initial event in the hemostasis process.
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