State function question as it applies to Biology/Physiology

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SUMMARY

The discussion centers on the concept of state functions in the context of biology and physiology, specifically regarding blood pressure and body temperature. Participants agree that a state function is a property dependent solely on the current state of a system, not on its history. However, they debate whether blood pressure and body temperature qualify as state functions due to their susceptibility to real-time changes influenced by various factors. The conversation highlights the complexity of defining state functions within biological systems.

PREREQUISITES
  • Understanding of thermodynamic principles, specifically state functions
  • Basic knowledge of human physiology, particularly blood pressure and body temperature
  • Familiarity with the concepts of normal sinus rhythm (NSR) and ventricular tachycardia (V-tach)
  • Awareness of the differences between local and systemic physiological responses
NEXT STEPS
  • Research the definition and examples of state functions in thermodynamics
  • Explore the physiological factors affecting blood pressure and body temperature
  • Study the implications of local vs. systemic temperature variations in biological systems
  • Investigate the impact of cardiac rhythms on blood pressure measurements
USEFUL FOR

This discussion is beneficial for nursing students, healthcare professionals, and anyone interested in the intersection of thermodynamics and physiological processes.

taimcampos92
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Hi everyone! Hope you all are doing great. I'm currently starting a new course mixed with Chemistry, Biochemistry, and Physics-related to Nurse anesthesia. While reading about State function a question arrived on my team. We all agreed that a State Function "is a property or characteristic of a system that depends only on its current state and not on how it reached that state"; however, can a person's Blood pressure or body temperature can be considered state functions?
 
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Welcome to PF. :smile:

Can you give a reference to your source of information on State Functions? Is it referring to biological and physiological systems mainly, or is it a general systems reference?

The issue with BP and body temperature is that they are affected by many things in real time. And it seems like elevated local temperature due to local swelling is different from uniform body temperature. Similarly, low BP due to being in V-tach is different from low BP with a NSR...
 
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berkeman said:
Welcome to PF. :smile:

Can you give a reference to your source of information on State Functions? Is it referring to biological and physiological systems mainly, or is it a general systems reference?

The issue with BP and body temperature is that they are affected by many things in real time. And it seems like elevated local temperature due to local swelling is different from uniform body temperature. Similarly, low BP due to being in V-tach is different from low BP with a NSR...
I see, thanks for the quick reply,

Still becomes somehow confusing to me to actually understand and fully recognize it. I'll do a little more research, thank you
 

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