• Organs in animal bodies work together like the members of a super-talented orchestra.
• How? By communication and transferring stuff like materials and energy.

🌏 Real-world Example: Think of a sports team. For them to score, they need to communicate seamlessly, both verbally (shouting to pass the ball) and non-verbally (knowing where team members will be). Just like that, our organs need to be in sync!

• Endocrine System

  • Role: Sends out chemical messages (hormones).
  • Where from? Glands.
  • How? Using our bloodstream.
  • Whom to? Pretty much anywhere in our body.
  • But, only certain cells, the "chosen ones", respond!

• Nervous System

  • Role: Sends electrical messages (nerve impulses).
  • Where from? Neurons.
  • How? Using the neuron superhighway.
  • Whom to? Specific places (like sending a private message).

🌏 Real-world Example: If your body was the internet

• Endocrine System = Broadcasting a post on social media. Everyone sees it, but only interested folks interact.
• Nervous System = Direct messaging a friend. Only they see and respond.

• Hormonal Signalling

  • Signal: Chemical
  • Transmission: Bloodstream
  • Response Type: Growth, mood changes (like feeling thirsty), puberty things, and metabolic stuff (like regulating blood sugar).
  • Speed: Slow and steady.
  • Duration: Long, like a marathon, until the hormone breaks down.

• Nervous Signalling

  • Signal: Electrical, thanks to cations crossing membranes.
  • Transmission: Neurons
  • Response Type: Muscle movements (walking, heartbeat), or gland secretion (like sweating).
  • Speed: Lightning-fast! ⚡
  • Duration: Short, like a sprint.

🌏 Real-world Example

• Hormonal Signalling = Snail mail. Takes time but has a lasting impact.
• Nervous Signalling = Text message. Quick, to the point, and short-lived.