Effect of Physical Activity on Breathing

• Physical activity increases the breathing rate – more breaths per minute, and the tidal volume – more air per breath
• Breathing rate is measured with a spirometer to produce a spirogram.
• During exercise, tissues respire at a higher rate, the change in breathing volume and rate helps to keep CO2 concentration and pH at safe levels.
• What is homeostasis?

  The regulation of internal conditions
• How does the body respond to a rise in temperature?

  By activating sweat glands for heat loss
• What are the key reasons for maintaining a stable internal environment?

  • Optimizes metabolic processes
  • Ensures consistent enzyme activity
  • Allows cells to function efficiently
• What is the purpose of the effector component in the negative feedback loop?

  To generate the response
• What are feedback systems?

  Control mechanisms maintaining homeostasis
• What is the effect of positive feedback?

  It amplifies change
• How do feedback systems maintain homeostasis?

  By reversing or amplifying changes
• What is the purpose of the effector component in the negative feedback loop?

  To generate the response
• What is the stimulus that triggers the negative feedback loop shown in the image?

  Stimulus
• How does the body temperature regulation system differ from the negative feedback loop?

  The body temperature regulation system involves additional components like nerve cells, sweat glands, and heat loss mechanisms
• How are the key factors in homeostasis regulated?

  They are dynamically regulated by the body