CNS, PNS, and brain regions
Fri, Mar 12, 2027 · Week 8 · Human Anatomy & Physiology (Human Body Systems)
Today's goal: Analyze how the CNS and PNS divide labor and connect regions to functions.
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 (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 action | CNS or PNS | Why |
|---|---|---|
| Deciding to wave | CNS | Brain initiates the plan |
| Feeling a hot pan | PNS | Sensory nerve relays toward CNS |
| Arm muscle pulling back | PNS | Motor nerve relays command out |
| Storing the memory | CNS | Processed in the brain |
This model shows the level of evidence and organization needed to complete: 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.
- Date and label the entry.
- Record the procedure, observation, or design decision clearly.
- End with what the evidence means and the next step.
Keep the structure. Replace the question, facts, measurements, and evidence. Then recheck units, vocabulary, and whether the conclusion goes beyond the evidence.
Also due today: Submit your sorting table and region-function matches as a single document.
Turn in: CNS/PNS sorting and region-function matches
Go to Schoology to turn this in.
Submit one PDF. Put your first and last name in the document header. Name the file: FirstName LastName - Assignment Title - YYYY-MM-DD.pdf.
Open Schoology PDF upload helpIf you cannot get in, see Mr. Mendoza. Do not skip the work.
Claim ceiling: Today's evidence supports a classroom claim about today's lesson. It cannot prove causation, diagnose a real patient, or justify action outside this room.
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.
Tap an answer to see the full explanation. Nothing is recorded or graded.
It builds this reusable test skill: Distinguishing CNS and PNS roles and applying it to injury recovery.
- Name the concept or data pattern being tested.
- Cross out choices that violate that rule or the evidence.
- Justify the best remaining choice before checking the answer.