15 Questions
What is the role of the hypothalamus in thermoregulation?
It acts as the thermostat for the body temperature
What happens beyond a body temperature of 42°C?
Cytotoxicity occurs with protein denaturation and impaired DNA synthesis
What are the potential consequences of severe hypothermia?
Neuromuscular, cardiovascular, hematological, and respiratory changes with fatal outcomes
How does fetal body temperature compare to maternal body temperature?
Fetal body temperature is usually 0.6 °C above maternal body temperature
What is the main function of thermoregulation in neonates?
Maintaining normal body temperature in a new harsh environment
What is the limit beyond which cytotoxicity occurs with protein denaturation and impaired DNA synthesis?
42°C
What is the potential fatality associated with severe hypothermia?
Respiratory failure
What is the usual difference between fetal body temperature and maternal body temperature?
0.6°C
What is the role of the hypothalamus in thermoregulation?
It regulates body temperature
What is the mechanism by which thermoregulation is impaired beyond normal temperature values?
Denaturation of proteins
What is the main function of neurons?
Generating and transmitting electrical signals
What is the main function of neuroglial cells?
Supporting and protecting neurons
Where are most neuronal cell bodies located?
Within the central nervous system (CNS)
What is the main function of the cell body of a neuron?
Acting as a 'protein factory' and containing the nucleus
What is the main function of dendrites in a neuron?
Receiving incoming signals from other neurons
This lecture covers the pathologies of heat and cold stresses, the differences between hyperthermia and fever, mechanisms of fever development, and human adaptation to extreme temperatures. It also includes a recap of thermoregulation as a homeostatic mechanism.
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