Overview of the Nervous System

Overview of the Nervous System is topic 1.2 of AP Psychology, inside Biological Bases of Behavior. This page works through three real practice questions on it, with the full reasoning behind each credited answer.

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44 questionsConcept Application100% with a figure
Worked examples

Three real overview of the nervous system questions

From the practice pool, not the mock papers — each with the reasoning that produces the answer.

100% of them come with a figure. Reading the graph or diagram correctly is most of the work here before any content knowledge applies.

Concept Application · with figure

After narrowly missing a bicyclist, a driver notices a pounding heart, tense muscles, and rapid breathing. Several minutes later, the driver's breathing slows and digestion feels normal again. Which nervous-system process best explains the later change?

  1. AThe somatic system sends a voluntary command to skeletal muscles.
  2. BParasympathetic activity helps return internal functions toward a resting state.correct
  3. CA spinal reflex bypasses the brain to produce an immediate withdrawal response.
  4. DThe motor cortex stores the emotional memory of the event.
Why B is correct

The scenario asks about recovery after a threat response; parasympathetic activity best fits that task.

"After narrowly missing a bicyclist, a driver notices a pounding heart, tense muscles, and rapid breathing." details toward parasympathetic activity, not just a familiar Biological Bases of Behavior label. The credited option, "Parasympathetic activity helps return internal functions toward a resting state", is supported because The parasympathetic branch supports recovery and maintenance after sympathetic arousal. "A spinal reflex bypasses the brain to produce an immediate withdrawal response" is a real-looking alternative, but A reflex describes a fast protective action, not minutes-long recovery after danger; "The motor cortex stores the emotional memory of the event" also fails because The motor cortex is not responsible for restoring digestion and breathing after arousal. The aim is to connect the concrete evidence to the psychological mechanism, then reject choices that shift the process, time frame, or research logic away from the scenario pattern.

Concept Application · with figure

Chemical messengers enter the bloodstream and influence distant organs over several minutes. Which communication network is most directly involved?

  1. ASomatic nervous system
  2. BOccipital cortex
  3. CEndocrine systemcorrect
  4. DEchoic memory
Why C is correct

The key clue is blood-borne chemical signaling.

autonomic nervous system explains the evidence in "Chemical messengers enter the bloodstream and influence distant organs over several minutes.". The credited option, "Endocrine system", is supported because Endocrine glands release hormones into the bloodstream for slower, widespread effects. "Echoic memory" is a real-looking alternative, but That is brief auditory sensory memory; "Somatic nervous system" also fails because That division controls voluntary skeletal-muscle movement. The aim is to connect the concrete evidence to the psychological mechanism, then reject choices that shift the process, time frame, or research logic away from the scenario pattern.

Concept Application · with figure

A person decides to lift a backpack and the arm muscles contract. Which division most directly carries the voluntary command?

  1. AParasympathetic branch
  2. BSomatic nervous systemcorrect
  3. CEndocrine glands
  4. DAuditory cortex
Why B is correct

The movement is voluntary and skeletal-muscle based.

"A person decides to lift a backpack and the arm muscles contract." details toward autonomic nervous system, not just a familiar Biological Bases of Behavior label. The credited option, "Somatic nervous system", is supported because The somatic system controls voluntary skeletal-muscle movement. "Parasympathetic branch" is a real-looking alternative, but That branch regulates calming and internal organ activity; "Endocrine glands" also fails because Hormonal signaling is slower and not the direct command for lifting. The aim is to connect the concrete evidence to the psychological mechanism, then reject choices that shift the process, time frame, or research logic away from the scenario pattern.

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Last reviewed 2026-08-28. Topic and unit names follow the College Board course framework. Question counts describe the PrepScore practice bank, not the exam.
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Work overview of the nervous system until the reasoning is automatic.

Real AP questions with a full explanation on every answer, and a mistake bank that only clears when you get it right.

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