BASIC MEDICAL NEUROSCIENCE -
GMS 6706-001 - UNIT 4 - PRACTICE
QUIZ QUESTIONS AND ANSWERS
Monosodium glutamate corresponds to which of the following tastes?
a. Sour
b. Sweet
c. Bitter
d. Umami - Answer-d. Umami
Binding of an odorant by G-protein coupled receptors results in activation of:
a. Adenylate cyclase
b. Tyrosine hydroxylase
c. Acetylcholinesterase
d. Choline acetyltransferase - Answer-a. Adenylate cyclase
Which of the following cells function to replace aging olfactory receptor neurons?
a. Epithelial
b. Endothelial
c. Stem
d. Ganglion - Answer-c. Stem
Visceral chemoreceptors monitor the internal concentration of:
a. Glucose
b. Glycine
c. Glycogen
d. Glutamate - Answer-a. Glucose
Axons of olfactory receptor neurons form which cranial nerve?
a. CN VII
b. CN I
c. CN II
d. CN X - Answer-b. CN I
Taste cells respond to the lowest concentration of which taste sensation?
a. Sour
b. Sweet
c. Bitter
d. Salty - Answer-c. Bitter
Action potentials in muscle fibers cause release of:
a. Na+
b. K+
c. Cl-
d. Ca++ - Answer-d. Ca++
, Motor neuron excitatory connections involve which of the following
neurotransmitters?
a. Serotonin
b. Dopamine
c. Glutamate
d. Acetylcholine - Answer-d. Acetylcholine
Duchenne's muscular dystrophy is caused by a lack of:
a. Gamma motor neurons
b. Ca++ ions
c. Dystrophin
d. Nicotinic acetylcholine receptors - Answer-c. Dystrophin
Slow twitch muscle fibers differ from fast twitch fibers in the number of:
a. Mitochondria
b. Lysosomes
c. Golgi
d. Peroxisomes - Answer-a. Mitochondria
Which of the following spinal chord segments innervate bicep muscles?
a. L3
b. S1
c. C5
d. C6 - Answer-d. C6
The number of different types of motor units:
a. 2
b. 3
c. 1
d. 4 - Answer-b. 3
Which of the following muscle fibers generate a constant twitch force over the
longest period of time?
a. Fast fatigue-resistant
b. Fast fatiguable
c. None of the above
d. Slow twitch - Answer-d. Slow twitch
Curare, the alkaloid used to prevent skeletal muscle contractions has no effect on
the CNS because?
a. It only affects receptors in the peripheral nervous system
b. It binds to dopamine receptors
c. It only inhibits G-protein coupled receptors
d. It does not cross the blood-brain barrier - Answer-d. It does not cross the blood-
brain barrier
Lower motor neuron firing triggers muscle fibers in the order:
a. S > FR > FF
b. FF > S > FR
c. FR > FF > S
GMS 6706-001 - UNIT 4 - PRACTICE
QUIZ QUESTIONS AND ANSWERS
Monosodium glutamate corresponds to which of the following tastes?
a. Sour
b. Sweet
c. Bitter
d. Umami - Answer-d. Umami
Binding of an odorant by G-protein coupled receptors results in activation of:
a. Adenylate cyclase
b. Tyrosine hydroxylase
c. Acetylcholinesterase
d. Choline acetyltransferase - Answer-a. Adenylate cyclase
Which of the following cells function to replace aging olfactory receptor neurons?
a. Epithelial
b. Endothelial
c. Stem
d. Ganglion - Answer-c. Stem
Visceral chemoreceptors monitor the internal concentration of:
a. Glucose
b. Glycine
c. Glycogen
d. Glutamate - Answer-a. Glucose
Axons of olfactory receptor neurons form which cranial nerve?
a. CN VII
b. CN I
c. CN II
d. CN X - Answer-b. CN I
Taste cells respond to the lowest concentration of which taste sensation?
a. Sour
b. Sweet
c. Bitter
d. Salty - Answer-c. Bitter
Action potentials in muscle fibers cause release of:
a. Na+
b. K+
c. Cl-
d. Ca++ - Answer-d. Ca++
, Motor neuron excitatory connections involve which of the following
neurotransmitters?
a. Serotonin
b. Dopamine
c. Glutamate
d. Acetylcholine - Answer-d. Acetylcholine
Duchenne's muscular dystrophy is caused by a lack of:
a. Gamma motor neurons
b. Ca++ ions
c. Dystrophin
d. Nicotinic acetylcholine receptors - Answer-c. Dystrophin
Slow twitch muscle fibers differ from fast twitch fibers in the number of:
a. Mitochondria
b. Lysosomes
c. Golgi
d. Peroxisomes - Answer-a. Mitochondria
Which of the following spinal chord segments innervate bicep muscles?
a. L3
b. S1
c. C5
d. C6 - Answer-d. C6
The number of different types of motor units:
a. 2
b. 3
c. 1
d. 4 - Answer-b. 3
Which of the following muscle fibers generate a constant twitch force over the
longest period of time?
a. Fast fatigue-resistant
b. Fast fatiguable
c. None of the above
d. Slow twitch - Answer-d. Slow twitch
Curare, the alkaloid used to prevent skeletal muscle contractions has no effect on
the CNS because?
a. It only affects receptors in the peripheral nervous system
b. It binds to dopamine receptors
c. It only inhibits G-protein coupled receptors
d. It does not cross the blood-brain barrier - Answer-d. It does not cross the blood-
brain barrier
Lower motor neuron firing triggers muscle fibers in the order:
a. S > FR > FF
b. FF > S > FR
c. FR > FF > S
