Page 1 of 74
THE MIND'S MACHINE EXAM WITH VERIFIED ANSWERS
DETAILED RATIONALES GRADED A+
The Mind's Machine: Foundations of Brain and Behavior — Test Bank
SECTION 1: STRUCTURE AND FUNCTION (Questions 1–17)
1. In standard neuroanatomical terminology, a structure described as "rostral" is located
toward which direction?
A. Toward the tail
B. Toward the head
C. Toward the back
D. Toward the belly
Rationale: Rostral means "toward the head" or "toward the beak." In bipeds like humans,
rostral refers to the front of the brain. This is a foundational anatomical orientation term used
throughout neuroscience.
2. Which plane of section divides the brain into equal left and right halves?
A. Horizontal plane
B. Coronal plane
C. Sagittal plane
D. Midsagittal plane
Rationale: The midsagittal plane divides the brain into two equal left and right halves. A sagittal
plane is any parallel section that does not necessarily divide the brain equally.
3. Dendrites are best described as which part of a neuron?
1|Page
,Page 2 of 74
A. The conduction zone
B. The input zone
C. The output zone
D. A type of glial cell
Rationale: Dendrites are the input zone of a neuron, receiving synaptic inputs from other
neurons. The axon is the conduction zone, and the axon terminals are the output zone.
4. Which technique uses magnetic fields to produce detailed images of brain structure
without ionizing radiation?
A. CT scan
B. PET scan
C. MRI
D. EEG
Rationale: MRI (magnetic resonance imaging) uses strong magnetic fields and radio waves to
produce high-resolution images of brain structure without the ionizing radiation used in CT
scans.
5. A researcher wants to measure the brain's electrical activity with excellent temporal
resolution. Which method is most appropriate?
A. fMRI
B. PET
C. EEG
D. MRI
Rationale: EEG (electroencephalography) measures electrical activity directly and offers
excellent temporal resolution (millisecond scale), though with poor spatial resolution compared
to fMRI or PET.
6. The term "gray matter" refers to brain tissue that primarily contains:
2|Page
,Page 3 of 74
A. Myelinated axons
B. Cell bodies and dendrites
C. Blood vessels
D. Cerebrospinal fluid
Rationale: Gray matter contains neuronal cell bodies, dendrites, and unmyelinated axons. White
matter contains myelinated axons, which appear white due to the lipid content of myelin.
7. Which of the following is NOT one of the four functional zones of a neuron?
A. Input zone
B. Conduction zone
C. Output zone
D. Storage zone
Rationale: The four functional zones of a neuron are the input zone (dendrites), conduction
zone (axon), output zone (axon terminals), and integration zone (axon hillock). There is no
"storage zone."
8. The central nervous system consists of:
A. The brain and spinal cord
B. All nerves and ganglia outside the brain and spinal cord
C. The somatic and autonomic nervous systems
D. The sympathetic and parasympathetic nervous systems
Rationale: The central nervous system (CNS) consists of the brain and spinal cord. The
peripheral nervous system includes all other nerves and ganglia.
9. Which glial cell type is responsible for producing myelin in the central nervous system?
A. Schwann cells
B. Oligodendrocytes
C. Astrocytes
D. Microglia
3|Page
, Page 4 of 74
Rationale: Oligodendrocytes produce myelin in the CNS. Schwann cells produce myelin in the
peripheral nervous system. Astrocytes provide structural and metabolic support, and microglia
are the immune cells of the brain.
10. The term "contralateral" refers to:
A. The same side of the body
B. The opposite side of the body
C. Toward the midline
D. Away from the midline
Rationale: Contralateral means "on the opposite side," while ipsilateral means "on the same
side." These terms are essential for describing neural pathways that cross the midline.
11. Which neuroimaging technique measures changes in blood oxygen levels to infer brain
activity?
A. EEG
B. PET
C. fMRI
D. CT
Rationale: fMRI (functional magnetic resonance imaging) measures the BOLD (blood-oxygen-
level-dependent) signal, which reflects changes in blood oxygenation associated with neural
activity.
12. A coronal section divides the brain into which two portions?
A. Left and right
B. Top and bottom
C. Front and back
D. Medial and lateral
4|Page
THE MIND'S MACHINE EXAM WITH VERIFIED ANSWERS
DETAILED RATIONALES GRADED A+
The Mind's Machine: Foundations of Brain and Behavior — Test Bank
SECTION 1: STRUCTURE AND FUNCTION (Questions 1–17)
1. In standard neuroanatomical terminology, a structure described as "rostral" is located
toward which direction?
A. Toward the tail
B. Toward the head
C. Toward the back
D. Toward the belly
Rationale: Rostral means "toward the head" or "toward the beak." In bipeds like humans,
rostral refers to the front of the brain. This is a foundational anatomical orientation term used
throughout neuroscience.
2. Which plane of section divides the brain into equal left and right halves?
A. Horizontal plane
B. Coronal plane
C. Sagittal plane
D. Midsagittal plane
Rationale: The midsagittal plane divides the brain into two equal left and right halves. A sagittal
plane is any parallel section that does not necessarily divide the brain equally.
3. Dendrites are best described as which part of a neuron?
1|Page
,Page 2 of 74
A. The conduction zone
B. The input zone
C. The output zone
D. A type of glial cell
Rationale: Dendrites are the input zone of a neuron, receiving synaptic inputs from other
neurons. The axon is the conduction zone, and the axon terminals are the output zone.
4. Which technique uses magnetic fields to produce detailed images of brain structure
without ionizing radiation?
A. CT scan
B. PET scan
C. MRI
D. EEG
Rationale: MRI (magnetic resonance imaging) uses strong magnetic fields and radio waves to
produce high-resolution images of brain structure without the ionizing radiation used in CT
scans.
5. A researcher wants to measure the brain's electrical activity with excellent temporal
resolution. Which method is most appropriate?
A. fMRI
B. PET
C. EEG
D. MRI
Rationale: EEG (electroencephalography) measures electrical activity directly and offers
excellent temporal resolution (millisecond scale), though with poor spatial resolution compared
to fMRI or PET.
6. The term "gray matter" refers to brain tissue that primarily contains:
2|Page
,Page 3 of 74
A. Myelinated axons
B. Cell bodies and dendrites
C. Blood vessels
D. Cerebrospinal fluid
Rationale: Gray matter contains neuronal cell bodies, dendrites, and unmyelinated axons. White
matter contains myelinated axons, which appear white due to the lipid content of myelin.
7. Which of the following is NOT one of the four functional zones of a neuron?
A. Input zone
B. Conduction zone
C. Output zone
D. Storage zone
Rationale: The four functional zones of a neuron are the input zone (dendrites), conduction
zone (axon), output zone (axon terminals), and integration zone (axon hillock). There is no
"storage zone."
8. The central nervous system consists of:
A. The brain and spinal cord
B. All nerves and ganglia outside the brain and spinal cord
C. The somatic and autonomic nervous systems
D. The sympathetic and parasympathetic nervous systems
Rationale: The central nervous system (CNS) consists of the brain and spinal cord. The
peripheral nervous system includes all other nerves and ganglia.
9. Which glial cell type is responsible for producing myelin in the central nervous system?
A. Schwann cells
B. Oligodendrocytes
C. Astrocytes
D. Microglia
3|Page
, Page 4 of 74
Rationale: Oligodendrocytes produce myelin in the CNS. Schwann cells produce myelin in the
peripheral nervous system. Astrocytes provide structural and metabolic support, and microglia
are the immune cells of the brain.
10. The term "contralateral" refers to:
A. The same side of the body
B. The opposite side of the body
C. Toward the midline
D. Away from the midline
Rationale: Contralateral means "on the opposite side," while ipsilateral means "on the same
side." These terms are essential for describing neural pathways that cross the midline.
11. Which neuroimaging technique measures changes in blood oxygen levels to infer brain
activity?
A. EEG
B. PET
C. fMRI
D. CT
Rationale: fMRI (functional magnetic resonance imaging) measures the BOLD (blood-oxygen-
level-dependent) signal, which reflects changes in blood oxygenation associated with neural
activity.
12. A coronal section divides the brain into which two portions?
A. Left and right
B. Top and bottom
C. Front and back
D. Medial and lateral
4|Page
