Two pathways for stress response - Intro to Psychology

Udacity
23 Feb 201501:07

Summary

TLDRThe script delves into the stress response pathways initiated in the hypothalamus, focusing on the adrenal medullary system. It recounts an encounter with a snake, illustrating the immediate activation of the sympathetic nervous system and the fight or flight response. Catecholamines are released, prompting a decision to flee or fight. While beneficial in emergencies, the script warns of the potential harm from long-term activation of this system, hinting at further discussion on chronic stress's negative impacts.

Takeaways

  • 🧠 The hypothalamus is the starting point for two main stress response pathways.
  • 🐍 Initial stress response, like seeing a snake, triggers the hypothalamus to engage the sympathetic nervous system.
  • 🏃‍♂️ Fight or flight response is an evolutionary benefit for dealing with emergencies or dangerous situations.
  • 💪 Release of catecholamines is part of the fight or flight response, preparing the body for action.
  • 🏃‍♀️ The speaker chose to flee rather than fight, illustrating the behavioral aspect of the stress response.
  • 🚨 Long-term activation of the sympathetic nervous system can lead to serious negative health effects.
  • 💓 Constantly increased heart rate due to chronic stress can cause damage to the body.
  • 🔍 The script hints at further discussion on the negative consequences of chronic stress.
  • 🧬 The activation of the fight or flight response is an important aspect of our evolutionary survival mechanisms.
  • 🤔 The script suggests the importance of understanding the physiological reactions to stress for overall health.
  • 📚 The lesson is likely part of a broader educational series on stress and its effects on the body.

Q & A

  • What are the two main pathways activated during a stress response that start in the hypothalamus?

    -The two main pathways are the adrenal medullary system and the activation of the sympathetic nervous system through the hypothalamus.

  • What is the role of the adrenal medullary system in the stress response?

    -The adrenal medullary system is responsible for the release of catecholamines, which are hormones that prepare the body for the fight or flight response during stress.

  • How does the hypothalamus initiate the fight or flight response?

    -The hypothalamus sends information to the brainstem to activate the sympathetic nervous system, which in turn triggers the fight or flight response.

  • What are the evolutionary benefits of the fight or flight response?

    -The fight or flight response is an evolutionary advantage that allows individuals to react quickly to emergencies or dangerous situations, either by running away or staying to fight.

  • What is the difference between the fight and flight responses?

    -The fight response involves staying and confronting the threat, while the flight response involves running away from the danger.

  • What is the role of catecholamines in the body's stress response?

    -Catecholamines, such as adrenaline and noradrenaline, are hormones released during stress that prepare the body for immediate action by increasing heart rate, blood flow, and other physiological changes.

  • What are the potential negative effects of long-term activation of the sympathetic nervous system?

    -Long-term activation can lead to chronic stress, which may cause damage to the heart and other negative health consequences.

  • Why is it important to understand the negative consequences of chronic stress?

    -Understanding the negative consequences helps individuals to manage stress effectively and prevent potential long-term health issues.

  • Can you provide an example of a situation that might trigger the fight or flight response?

    -An example could be encountering a snake, which would trigger an immediate stress response to either flee or fight.

  • What is the significance of the sympathetic nervous system in the context of the fight or flight response?

    -The sympathetic nervous system is crucial as it initiates the physiological changes necessary for the body to respond to stress effectively, preparing it for action.

  • How does the body behave appropriately during a stress response?

    -The body behaves appropriately by either running away from the threat or staying to confront it, based on the release of catecholamines and activation of the fight or flight response.

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Etiquetas Relacionadas
Stress ResponseFight or FlightCatecholaminesEvolutionary BenefitsSympathetic Nervous SystemAdrenal MedullaryEmergency ReactionHealth ImpactStress ManagementNeuroscience
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