Water-soluble molecules such as glucose and amino acids move across the blood-brain barrier by
A. diffusion.
B. endocytosis.
C. exocytosis.
D. mediated transport.
E. filtration.
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Question 2) The Roman numerals assigned to each cranial nerve reflect
A. the order of their discovery.
B. the sequence from anterior to posterior in which they emerge from the brain.
C. their importance, with highest numbers being the most important.
D. the complexity of each nerve, with complex nerves having higher numbers.
E. the sequence from posterior to anterior in which they emerge from the brain.
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Question 3) Cranial nerve function includes
A. somatic motor.
B. sympathetic control.
C. cognitive skills.
D. regulation of emotions.
E. None of these choices are correct.
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Question 4) What structural feature of the brain regulates the movement of materials from the blood into the brain?
A. myelin sheath
B. Circle of Willis
C. meninges
D. blood-brain barrier
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Question 5) Henry has a thrombus just beyond where the vertebral arteries join on the base of the pons. Which vessel is affected?
A.
dural sinuses
B.
basilar artery
C.
cranial artery
D.
None of the choices are correct.
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Question 6) Sixteen year-old Jake is diagnosed with hydrocephaly. What will this do if left untreated?
A.
The brain will shrink and shrivel.
B.
The excess fluid will exert pressure on his brain.
C.
The cerebral cortex will absorb the excess fluid and swell.
D.
Tthe choroid plexus will enlarge.
E.
The arachnoid granulations will halt their function.
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Question 7) Cerebrospinal fluid is produced by the ____ and is reabsorbed by the ____.
A. choroid plexus, arachnoid granulation
B. arachnoid granulation, choroid plexus
C. dural sinus, dura mater
D. dura mater, dural sinus
E. septa pellucida, cerebral aqueduct
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Question 8) The blockage of CSF inside the brain is a condition called
A. internal hydrocephalus.
B. ventricular hydrocephalus.
C. external hydrocephalus.
D. internal hematoma.
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Question 9) Which ventricle is located between the two halves of the thalamus?
A. first ventricle
B. second ventricle
C. third ventricle
D. fourth ventricle
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Question 10) The cerebral aqueduct connects
A. the two lateral ventricles.
B. the third ventricle to the fourth ventricle.
C. connects the lateral ventricles to the third ventricle.
D. connects the fourth ventricle to the subarachnoid space.
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