NBCE Part I Physiology Practice Exam
Which channels most readily allow ions to cross the plasma membrane of neurons?
A. carbohydrate
B. lipid
C. protein
D. water
C. protein
The release of acetylcholine from the presynaptic terminal is dependent upon _____ influx.
A. calcium
B. sodium
C. potassium
D. magnesium
A. calcium
Which of these statements is not correct regarding the relationship of muscle contraction
velocity to load?
A. Velocity is extremely rapid with no load
B. Velocity is slower as load increases
C. As load equals maximum force, velocity becomes zero.
D. Load has no effect on velocity of contraction
D. Load has no effect on velocity of contraction
Dysdiadochokinesia can be caused by a lesion in the _____.
A. thalamus
B. cerebellum
C. medulla
D. hypothalamus
B. cerebellum
, The most rapid transmission of somatosensory information to the brain is through the _____.
A. dorsal columns
B. sympathetic afferents
C. ventral spinothalamic tracts
D. dorsal spinothalamic tracts
A. dorsal columns
Which of these is/are naturally responsible for producing hyperalgesia in damaged tissue?
A. opioids
B. sodium
C. substance P
D. interleukin-1
A. opioids
Preganglionic sympathetic neurons release _____.
A. glutamate
B. epinephrine
C. acetylcholine
D. norepinephrine
C. acetylcholine
A lesion of the premotor cortex results in _____.
A. agnosia
B. amnesia
C. agnosmia
D. apraxia
D. apraxia
A patient with damage to the Wernicke area most likely has difficulty with _____.
A. coordinating movement
B. interpreting somatic stimuli
C. recognizing scents
D. comprehending language
D. comprehending language
Which channels most readily allow ions to cross the plasma membrane of neurons?
A. carbohydrate
B. lipid
C. protein
D. water
C. protein
The release of acetylcholine from the presynaptic terminal is dependent upon _____ influx.
A. calcium
B. sodium
C. potassium
D. magnesium
A. calcium
Which of these statements is not correct regarding the relationship of muscle contraction
velocity to load?
A. Velocity is extremely rapid with no load
B. Velocity is slower as load increases
C. As load equals maximum force, velocity becomes zero.
D. Load has no effect on velocity of contraction
D. Load has no effect on velocity of contraction
Dysdiadochokinesia can be caused by a lesion in the _____.
A. thalamus
B. cerebellum
C. medulla
D. hypothalamus
B. cerebellum
, The most rapid transmission of somatosensory information to the brain is through the _____.
A. dorsal columns
B. sympathetic afferents
C. ventral spinothalamic tracts
D. dorsal spinothalamic tracts
A. dorsal columns
Which of these is/are naturally responsible for producing hyperalgesia in damaged tissue?
A. opioids
B. sodium
C. substance P
D. interleukin-1
A. opioids
Preganglionic sympathetic neurons release _____.
A. glutamate
B. epinephrine
C. acetylcholine
D. norepinephrine
C. acetylcholine
A lesion of the premotor cortex results in _____.
A. agnosia
B. amnesia
C. agnosmia
D. apraxia
D. apraxia
A patient with damage to the Wernicke area most likely has difficulty with _____.
A. coordinating movement
B. interpreting somatic stimuli
C. recognizing scents
D. comprehending language
D. comprehending language
