Practice question · Select all that apply
Select every statement that is TRUE about the PNS.
Hints
- Two options are misconceptions - one about an on/off switch, one about which branch does fight-or-flight.
- Organ state is a BALANCE, and fight-or-flight is the SYMPATHETIC job.
Show the answer
- B. The somatic nervous system carries commands to skeletal muscle.
- D. Chronic, unrelieved sympathetic dominance is what damages health over time.
- E. The sympathetic and parasympathetic branches usually oppose each other on the same organ.
Why
Somatic-to-muscle, opposing branches, and chronic-dominance harm are all true. The branches are not a full on/off switch (organ state is their balance), and fight-or-flight is sympathetic, not parasympathetic - so those two are false.
Practise Peripheral Nervous System
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