John Hay
John Hay Biomedical
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Here's an example of what's due today

CNS, PNS, and brain regions

Tue, Mar 16, 2027 · Week 9 · Human Anatomy & Physiology (Human Body Systems)

Today's goal: Analyze how the CNS and PNS divide labor and connect regions to functions.

Learn first

What a finished product looks like

This is a model of the work you should turn in today. Use it to check your own: match the structure and the level of detail, do not copy it. Your data and wording should be your own.

CNS/PNS sorting and region-function matches
Completes: A sorting table that classifies five body actions by whether they are integrated by the CNS or relayed by the PNS with a short justification, plus three brain-region-to-function matches carried over from the brain map.

CNS/PNS sorting (CNS integrates and decides; PNS carries signals to and from the CNS):

  • Deciding to wave hello: CNS, the brain initiates the voluntary plan.
  • Sensing a hot pan on your hand: PNS, sensory nerve carries the signal toward the CNS.
  • The brain interpreting that the pan is hot: CNS, integration of input.
  • Muscle in your arm contracting to pull back: PNS, motor nerve carries the command to the muscle.
  • Storing the memory of the burn: CNS, processed and stored in the brain.

Region-function matches:

1. Cerebrum to voluntary movement and language.

2. Cerebellum to balance and coordination.

3. Brainstem to heart rate and breathing.

Body actionCNS or PNSWhy
Deciding to waveCNSBrain initiates the plan
Feeling a hot panPNSSensory nerve relays toward CNS
Arm muscle pulling backPNSMotor nerve relays command out
Storing the memoryCNSProcessed in the brain
Table sorting four body actions into CNS or PNS with a short reason for each.

Also due today: Submit your sorting table and region-function matches as a single document.

Check yourself

WebXam problem for today's skill

One exam-style question that uses exactly what you practiced today. Try it before you reveal the answer, then read why each choice is right or wrong.

WebXam-style domain: Human Body Form, Function, and PathophysiologySelf-check skill: Distinguishing CNS and PNS roles and applying it to injury recovery
A stroke damages neurons in the brain (CNS), while a separate patient crushes a nerve in the arm (PNS). Based on how these systems differ, which statement is correct?

Tap an answer to see the full explanation. Nothing is recorded or graded.

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