Questions: Which of the following do not influence arterial pulse rate? emotions postural changes the vessel selected to palpate activity

The answer is the third one: the vessel selected to palpate.

Explanation for each option:

1. Emotions: Emotions can influence arterial pulse rate. Stress, anxiety, or excitement can increase heart rate due to the release of adrenaline and other stress hormones.

2. Postural changes: Changes in posture can affect pulse rate. For example, standing up quickly can cause a temporary increase in heart rate as the body adjusts to maintain blood pressure and blood flow.

3. The vessel selected to palpate: The vessel selected to palpate does not influence the actual pulse rate. The pulse rate is determined by the heart's activity, not by which artery is used to measure it. Different vessels may make it easier or harder to feel the pulse, but they do not change the rate itself.

4. Activity: Physical activity influences pulse rate. Exercise increases heart rate to supply muscles with more oxygen and nutrients.

In summary, the vessel selected to palpate does not influence the arterial pulse rate, while emotions, postural changes, and activity do.