Biology HL
Biology HL
4
Chapters
553
Notes
Theme A - Unity & diversity
Theme A - Unity & diversity
Theme B - Form & Function
Theme B - Form & Function
Theme C - Interaction &  Interdependence
Theme C - Interaction & Interdependence
Theme D - Continuity & Change
Theme D - Continuity & Change
IB Resources
Theme C - Interaction &  Interdependence
Biology HL
Biology HL

Theme C - Interaction & Interdependence

Unlocking Spinal Cord Secrets A Hub for Unconscious Acts

Word Count Emoji
575 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 5th Nov 2024

Table of content

Main takeaways

  • Central Nervous System (CNS): The boss of our nervous system. It consists of the brain and spinal cord.
  • Spinal Cord: Think of it as the information highway between your brain and body parts.
  • Spinal Nerves: There are 31 pairs of these nerves connecting different body parts to the spinal cord.
  • White Matter vs Grey Matter: These are two key parts of the spinal cord which help in transmitting and processing info.

Central nervous system (CNS)

Comprises

  • 🧠 Brain: Think of this as the CEO of your body.
  • 🦴 Spinal Cord: Located inside the backbone, it's like the main highway for messages.

Spinal cord fun facts

  • Location: Tucked inside the vertebral column (backbone).
  • Shape: Wide at the top (where it meets the brain) and tapers as it goes down towards your bum.
  • It's like a branching tree, with 31 pairs of spinal nerves spreading left and right from it. Each pair serves a different region of your body—kind of like how different highways take you to different places.

The 'matter' of spinal cord

  • White Matter: Contains myelinated axons and other nerve fibres.
    • Job: Transfer signals from sensors to the brain & vice-versa. Imagine this as high-speed internet cables!
  • Grey Matter: Contains cell bodies of motor neurons and interneurons.
    • Cool Feature: Packed with synapses for processing information and decision-making. It's like a mini-computer within the spinal cord!

Unlock the Full Content! File Is Locked Emoji

Dive deeper and gain exclusive access to premium files of Biology HL. Subscribe now and get closer to that 45 🌟

Nail IB's App Icon
IB Resources
Theme C - Interaction &  Interdependence
Biology HL
Biology HL

Theme C - Interaction & Interdependence

Unlocking Spinal Cord Secrets A Hub for Unconscious Acts

Word Count Emoji
575 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 5th Nov 2024

Table of content

Main takeaways

  • Central Nervous System (CNS): The boss of our nervous system. It consists of the brain and spinal cord.
  • Spinal Cord: Think of it as the information highway between your brain and body parts.
  • Spinal Nerves: There are 31 pairs of these nerves connecting different body parts to the spinal cord.
  • White Matter vs Grey Matter: These are two key parts of the spinal cord which help in transmitting and processing info.

Central nervous system (CNS)

Comprises

  • 🧠 Brain: Think of this as the CEO of your body.
  • 🦴 Spinal Cord: Located inside the backbone, it's like the main highway for messages.

Spinal cord fun facts

  • Location: Tucked inside the vertebral column (backbone).
  • Shape: Wide at the top (where it meets the brain) and tapers as it goes down towards your bum.
  • It's like a branching tree, with 31 pairs of spinal nerves spreading left and right from it. Each pair serves a different region of your body—kind of like how different highways take you to different places.

The 'matter' of spinal cord

  • White Matter: Contains myelinated axons and other nerve fibres.
    • Job: Transfer signals from sensors to the brain & vice-versa. Imagine this as high-speed internet cables!
  • Grey Matter: Contains cell bodies of motor neurons and interneurons.
    • Cool Feature: Packed with synapses for processing information and decision-making. It's like a mini-computer within the spinal cord!

Unlock the Full Content! File Is Locked Emoji

Dive deeper and gain exclusive access to premium files of Biology HL. Subscribe now and get closer to that 45 🌟