Fight or Flight

• What is the primary focus of the A1 Biopsychology section?

  Fight or flight response
• What is the role of adrenaline in the fight or flight response?

  Triggers physiological changes in the body
• What are the steps involved in the fight or flight response?

  1. Stressor perceived
  2. Hypothalamus triggers sympathetic ANS
  3. Adrenaline released from adrenal medulla
  4. Physiological changes occur (e.g., increased heart rate)
  5. Parasympathetic system returns body to resting state
• What happens to the ANS during the fight or flight response?

  It shifts from parasympathetic to sympathetic
• What physiological changes occur due to adrenaline release?

  Increased heart rate and pupil dilation
• What is the term for the body's state after the threat has passed?

  Rest and digest response
• Why do pupils dilate during the fight or flight response?

  To enhance vision in dangerous situations
• What are the correct statements about the fight or flight response?

  • Blood flow is diverted from the skin
  • Digestion is inhibited
• What neurotransmitter is known as ACh?

  Acetylcholine
• What hormone is produced by the thyroid gland?

  Thyroxine
• What is the major endocrine gland located at the base of the brain?

  The pituitary gland
• What system is responsible for the 'rest and digest' response?

  The parasympathetic system
• What is the soma in a neuron?

  The cell body containing genetic material
• What is the function of the cerebral cortex?

  Controls higher mental functions
• What is an action potential in a neuron?

  An electrical impulse created by a stimulus
• What is the role of the spinal cord?

  Passes messages to and from the brain
• What is the node of Ranvier?

  A gap in the myelin sheath
• What are psychoactive drugs used for?

  Treat mental disorders and alter consciousness
• What is the relationship between the endocrine system and the ANS during the fight or flight response?

  • They work together
  • The endocrine system releases hormones
  • The ANS triggers physiological changes
• What is the main purpose of the fight or flight response?

  To help cope in dangerous situations
• How does the fight or flight response prepare the body for action?

  By increasing heart rate and redirecting blood flow
• What physiological changes would you expect during a stressful situation?

  Increased heart rate and pupil dilation
• What are the key components of the fight or flight response?

  • Perception of stressor
  • Activation of the sympathetic ANS
  • Release of adrenaline
  • Physiological changes in the body