Week 13 — Quiz (auto-graded) · The Central Nervous System

Course: Anatomy & Physiology I (BIOL 2301 + BIOL 2101) · Silver Oak University (fictional sample) · Prof. Navarro
Objective tested: Objective 7 — brain regions & their functions; the spinal cord; the meninges & cerebrospinal fluid; CNS protection; the reflex arc; gray vs. white matter.
Points: 10 (1 each) · Assignment group: Quizzes (10% of grade) · Due: end of Module 13.

This is the human-readable quiz with its vetted answer key and feedback. The import-ready Classic QTI is in F-quiz-week-13-qti.xml (generated by the shared validated script — parses with 10 items, every single-answer item exactly one correct). The reusable item-bank entries and the Canvas placement block are at the bottom of this file.

Blueprint

No trick questions; distractors target the Week 13 misconceptions named in the lecture outline.

Questions, key, and feedback

Q1 (Matching). Match each CNS region to its primary function.
| Region | Correct function |
|---|---|
| Cerebellum | Coordination, balance, and posture |
| Medulla oblongata | Vital autonomic centers (heart rate and breathing) |
| Hypothalamus | Homeostasis (temperature, hunger, thirst) |
| Occipital lobe | Processing vision |
Feedback: The classic pairings: cerebellum = coordination/balance ("little brain"); medulla = the vital centers that keep you alive (heart rate, breathing); hypothalamus = the homeostasis control center; occipital lobe = vision (it's at the back of the brain).

Q2 (MC). The frontal lobe of the cerebrum is most responsible for —
- A. processing vision
- B. voluntary movement, planning, and personality ✅
- C. hearing and forming memories
- D. coordinating balance and posture
Feedback: The frontal lobe handles voluntary movement, planning, decision-making, and personality (and speech production). Vision is the occipital lobe; hearing/memory the temporal; balance the cerebellum.

Q3 (MC). A patient suffers an injury to the medulla oblongata. Which functions are MOST immediately threatened?
- A. color vision and reading
- B. heart rate, breathing, and blood pressure ✅
- C. long-term memory storage
- D. fine motor coordination of the hands
Feedback: The medulla (lowest brainstem) houses the vital autonomic centers — heart rate, breathing, blood pressure. That's why brainstem injuries are so dangerous. (Vision = occipital; memory = temporal; coordination = cerebellum.)

Q4 (MC). Which structure is the body's main homeostatic control center, regulating temperature, hunger, thirst, and linking the nervous system to the endocrine system?
- A. the cerebellum
- B. the thalamus
- C. the hypothalamus ✅
- D. the medulla oblongata
Feedback: The hypothalamus is the homeostasis center (temperature, hunger, thirst, sleep) and the bridge to the endocrine system. Don't confuse it with the thalamus, which relays sensory signals. Memory hook: thalamus relays; hypothalamus regulates.

Q5 (MC). Damage to the cerebellum would most likely cause —
- A. loss of vision in one eye
- B. clumsy, uncoordinated movements and poor balance ✅
- C. an inability to feel touch on the skin
- D. a stoppage of breathing
Feedback: The cerebellum governs coordination, balance, and smooth movement — so damage makes movement clumsy and unsteady (think of staggering when the cerebellum is depressed by alcohol). Breathing = medulla; touch = parietal lobe; vision = occipital lobe.

Q6 (Matching — ordering). The three meninges wrap the CNS from the outermost layer (against the bone) to the innermost layer (against the brain). Match each position to the correct membrane.
| Position | Correct membrane |
|---|---|
| Outermost (against the skull/vertebrae) | Dura mater |
| Middle (web-like, with the subarachnoid space) | Arachnoid mater |
| Innermost (hugs the brain surface) | Pia mater |
Feedback: Outer → inner: dura mater ("tough mother," against bone) → arachnoid mater (web-like, with the CSF-filled subarachnoid space) → pia mater ("tender mother," on the brain). Memory hook: D-A-P — "down and in." Students reverse this constantly.

Q7 (MC). Which is a primary function of cerebrospinal fluid (CSF)?
- A. carrying oxygen to red blood cells
- B. cushioning the brain and spinal cord and reducing their effective weight ✅
- C. producing the action potential in neurons
- D. secreting digestive enzymes into the gut
Feedback: CSF cushions the CNS, makes the brain buoyant (reducing its effective weight so it doesn't crush itself), and removes waste. It is made in the brain's ventricles — it does not carry oxygen (that's blood).

Q8 (True / False). "The occipital lobe processes hearing."
- True
- False ✅
Feedback: False. The occipital lobe processes vision. Hearing is the job of the temporal lobe (by the ears). This swap is the week's classic error — anchor it: occipital is at the back, where vision lives.

Q9 (Multiple answer — select all that apply). Which of the following help protect the central nervous system?
- A. The meninges ✅
- B. Cerebrospinal fluid (CSF) ✅
- C. The skull and vertebrae ✅
- D. The pleura
- E. Synovial fluid
Feedback: The CNS is protected by the meninges, CSF, and the skull/vertebrae. The pleura is a membrane around the lungs; synovial fluid lubricates joints — neither protects the CNS. Those are the distractors.

Q10 (MC). Which lists the parts of a reflex arc in the correct order, from stimulus to response?
- A. effector → motor neuron → integration center → sensory neuron → receptor
- B. receptor → sensory (afferent) neuron → integration center → motor (efferent) neuron → effector ✅
- C. receptor → motor neuron → effector → sensory neuron → integration center
- D. integration center → receptor → effector → sensory neuron → motor neuron
Feedback: A reflex arc runs receptor → sensory (afferent) neuron → integration center (spinal cord) → motor (efferent) neuron → effector. The decision happens in the spinal cord, so you react before the pain reaches your conscious brain. Memory hook: afferent Arrives; efferent Exits.

Answer key (quick reference)

Quality gate (self-checked): each single-answer item has exactly one correct option; the multiple-answer item (Q9) requires all three CNS-protection structures (A, B, C) selected and both distractors (pleura, synovial fluid) left unselected; the two matching items pair four (Q1) and three (Q6) prompts to distinct correct responses; every brain region→function pairing, the meninges order (dura → arachnoid → pia, outer → inner), the CSF function, and the reflex-arc order are verified against standard anatomy (OpenStax A&P §13.2 The Central Nervous System and §13.3 Circulation & the CNS / meninges & CSF; InnerBody nervous system). Anatomy-accuracy gate: PASS. No computation in this quiz, so no arithmetic to mis-key — the quantitative gate does not apply this week (Week 13 is conceptual; quantitative pockets are W2 pH, W3 osmolarity, and W12 membrane potential).

Item-bank entries (for variants + the midterm/final)

All ten items are tagged course=BIOL2301 · week=13 · objective=7 · topic=central-nervous-system and deposited in Item Bank: Week 13 — The Central Nervous System. The final (Week 16) and the per-term variant updates draw fresh items from this bank. (Tags: q1 brain-region-function-match, q2 cerebral-lobes, q3 medulla-vital-centers, q4 hypothalamus-homeostasis, q5 cerebellum, q6 meninges-order, q7 csf-function, q8 occipital-misconception, q9 cns-protection, q10 reflex-arc-order.)

Canvas placement block

canvas_object   = Quizzes::Quiz
title           = "Week 13 Quiz — The Central Nervous System"
assignment_group = "Quizzes"
points_possible = 10
grading_type    = points
due_offset_days = 5        # 5 days after module start (Tue) -> Sunday
published       = true
shuffle_answers = true
provenance      = "~ Prof. Navarro's edition · Fall 2026 · built with thecoursemaker.com"