Lesson 8.4.2
8.4.2 Regions of the human brain and brain imaging: MRI, fMRI, PET and CT Quiz: Pearson Edexcel Biology, Unit 8
20 questions
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Lesson 8.4.2, Regions of the human brain and brain imaging: MRI, fMRI, PET and CT: 20 multiple choice questions for the Pearson Edexcel Biology (9BI0), Unit 8: Grey Matter, written with Revision Ninja.
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The 20 questions
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Which brain region is responsible for conscious thought, voluntary movement, and sensory perception?
- Cerebral cortex
- Hypothalamus
- Cerebellum
- Medulla oblongata
-
Which region of the brain coordinates balance, posture, and fine motor movement?
- Cerebellum
- Hypothalamus
- Medulla oblongata
- Cerebral cortex
-
Which brain region controls involuntary processes such as heart rate and breathing?
- Medulla oblongata
- Cerebral cortex
- Hypothalamus
- Cerebellum
-
Which brain region regulates body temperature, thirst, and pituitary gland secretion?
- Cerebellum
- Medulla oblongata
- Thalamus
- Hypothalamus
-
Which imaging technique uses X-rays from multiple angles to produce cross-sectional images?
- fMRI scan
- CT scan
- MRI scan
- PET scan
-
Which imaging technique uses magnetic fields and radio waves to detect hydrogen nuclei?
- MRI scan
- Ultrasound scan
- CT scan
- PET scan
-
Which imaging technique uses a radioactive tracer emitting positrons to assess metabolic activity?
- fMRI scan
- CT scan
- PET scan
- MRI scan
-
What is a main advantage of MRI over CT when scanning soft tissues?
- Clearer bone imaging
- Faster scan speed
- Lower equipment cost
- No ionising radiation
-
What change does functional magnetic resonance imaging (fMRI) detect to map active brain areas?
- Positron emission
- Glucose consumption
- Blood oxygenation
- Electrical voltage
-
What is a major disadvantage of using PET scans compared to MRI?
- Poor metabolic data
- Low image resolution
- Long scan duration
- Ionising radiation exposure
-
Which symptom is most likely caused by a tumour compressing the cerebellum?
- Loss of balance
- Hormonal imbalance
- Irregular heart rate
- Loss of vision
-
Which physiological process is disrupted by damage to the medulla oblongata?
- Body temperature control
- Heart rate regulation
- Fine motor control
- Memory retrieval
-
Which brain imaging technique is best suited for detecting bone fractures in the skull?
- CT scan
- MRI scan
- fMRI scan
- PET scan
-
Which brain imaging technique best shows real-time brain activity while a patient reads?
- X-ray radiograph
- CT scan
- fMRI scan
- Standard MRI scan
-
Which imaging technique provides the highest resolution when examining dense bone structures?
- MRI scan
- CT scan
- fMRI scan
- PET scan
-
What does high uptake of radioactive glucose tracer in a PET scan indicate?
- High metabolic activity
- High tissue density
- Cellular atrophy
- Low blood flow
-
Which region of the brain controls conscious thought, memory and language?
- Cerebral cortex
- Medulla oblongata
- Cerebellum
- Hypothalamus
-
MRI produces detailed soft tissue images by detecting response signals from which nuclei?
- Phosphorus nuclei
- Carbon nuclei
- Calcium nuclei
- Hydrogen nuclei
-
Which imaging technique monitors real-time brain activity without using ionising radiation?
- PET scan
- fMRI
- X-ray radiography
- CT scan
-
What changes does functional magnetic resonance imaging (fMRI) directly measure in the brain?
- Electrical impulse speed
- Neurotransmitter concentration
- Glucose uptake rate
- Blood oxygenation levels
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