EXAM #2 Flashcards
(25 cards)
Which neuron projects the cerebral cortex somatosensory sensory pathway? A. First-quarter B. Second order C. Third order D. Fourth order
C. Third order
True or false The Raphespinal tract modulates sensory information between the first and second order neurons
True
Most of the fibers of the anterior corticospinal tract… A. Cross the midline of the Medulla B. Cross the midline of the spinal cord C. Cross the midline of the pons D. Remain uncrossed
B. Cross the midline of the spinal cord
The posterior spinocerebellar tract originates from which you nucleus? A. Lumbosacral B. Dorsal thoracic C. Phrenic D. Accessory cuneate
B. Dorsal thoracic
Which transmitter influences movement? A. Adrenaline B. Serotonin C. Dopamine D. Acetylcholine
D. Acetylcholine
Where are the lower motor neuron's that innervate the hand located? A. Ventromedial nucleus B. Intermediolateral nucleus C. Retro dorsal nucleus D. Central nucleus
B. intermediolateral nucleus
Proprioceptive sensation of the upper limb is carried by which tract? A. Anterior spinothalamic B. Gracile C. Lateral spinothalamic D. Cuneate
D. Cuneate
Which is not true of the reticular formation?
A. The neurons are far reaching
B. It is somewhat poorly organized
C. It has developed recently in the animal kingdom
D. It is mainly fibers
C. It has developed recently in the animal kingdom
Which does not contain cortiobulbar fibers? A. Cerebral peduncle B. Lateral corticospinal C. Corona radiata D. Pyramid
B. Lateral corticospinal
Which pathway carries pains and station to the cerebrum? A. Raphespinal B. Spinotectal C. Spinothalamic D. Medial Lemniscus
A. Raphespinal
True or false The reticular formation connects either directly or indirectly with levels of the central nervous system
True
Where are alpha motor neurons found? A. Tegmentum of the brainstem B. Gray matter of the spinal cord C. White matter of the telencephalon D. Anterior surface of the brain stem
B. Gray matter of the spinal cord
Renshaw cells A. Excite motor neurons B. Are upper motor neuron C. Inhibit motor neurons D. Are lower motor neuron's
C. Inhibit motor neurons
True or false the internal capsule contains a sending and descending fibers
True
The vestibulospinal tract is composed of fibers derived from the: A. Lateral vestibular nucleus B. Medial vestibule nucleus C. Superior vestibular nucleus D. Inferior vestibular nucleus
A. Lateral vestibular nucleus
Sensory information typically reaches the cerebral cortex of the contralateral side. The axons that cross the midline to accomplish this are from the
A. Thalami neurons
B. First order neuron
C. Second order or higher order neurons
D. Could be any of the bad depending on the pathway
C. Second order or higher order neurons
The fibers of the cuneate fascicle goal originate from neurons located in the A. Pyramid B. Dorsal root ganglion C. Dentate nucleus D. Olive
B. Dorsal root ganglion
Which nucleus is in the midline? A. Paramedian B. Medial C. Central D. Raphe
D. Raphe
Which contains descending upper motor fibers? A. Pyramid B. Cerebral peduncle C. Internal capsule D. All of the above
D all of the above
Which cerebellar pathway has fibers that cross? A. Cuneospinocerebellar B. Anterior spinocerebellar C. Rostral spinocerebellar D. Posterior Spinocerebellar
A. Anterior spinocerebellar
What transmitter is secreted by raphae neurons? A. Noradrenaline B. Dopamine C. Serotonin D. Acetylcholine
C. serotonin
The ascending reticular activating system (ARAS) controls which particular function? A. Awareness B. Modulating muscle tone C. Control of breathing D. Sensation of pain
A. Awareness
Where is the reticular formation? A. Anterior surface of the brain stem B. Middle of the brainstem C. White matter of the telencephalon D. Gray matter of the spinal cord
B. Middle of the brainstem
Where are the third order neurons of the somatosensory pathway located? A. Thalamus B. Cerebrum C. Medulla D. Cerebellum
A. Thalamus
