Phys II Midterm Flashcards
Responsible for most of spinal cord integrative function
Interneurons
Excite nuclear bad intrafusal fibers
Gamma-dynamic
Endolymph is found in the scala media
True
Afferent fibers in golgi tendon
Ib
T or F Helicotrema where hair cells become smallest?
False
Order of sound entering ear
Tympanic membrane-maleus-incus-stapes-oval window
Renshaw cells
Lateral inhibition
Separates scala media from scala vestibuli
Reissner’s membrane (vestibular membrane)
T or F When you age …. 1000 decibels
False
Where does crossing over occur between the right and left pathways?
Trapezoid body of medulla
How a person determines the direction from which sound comes
Auditory association cortex
Question about reflex
Answer had extension (believe it was quadriceps and excitatory out of choices)
Tectorial membrane sits between
Scala vestibuli/scala media
Hair cells bent…secrete…
K+
Impedence matching due to
Difference in size between …. and round window
Which of the below is NOT part of the Analgesia system
Nucleus Ruber
Location for control functions for muscle movements of the axial body, neck, shoulders and hips
Vermis
T or F The cerebellum is not required for locomotion
True
Associated with vestibular system
Flocculonodular lobe
Muscle movement
Dorsal spinocerebellar
Axons form climbing fibers
Neurons project from inferior olivary nuclei
Involved in coordination of skilled movements and speech
Cerebrocerebellum
Which one of these is NOT a function of spinocerebellar
Plans as much as tenths of a second in advance of actual movements: Referred to as “motor imagery”
Axons from parallel fibers in cortex
Granular cells
ONLY output from cortex
Purkinje cells
Neurotransmitter that is always inhibitory
GABA
Which one of these statements is incorrect
Parkinson’s disease
All of the following except…
Thalamus
Putamen
Subconscious execution of learned patterns of movement
Lesions - results in flicking movements hand, face = chorea
Globus Pallidus
Part of basal nuclei, motor activity
Lesions - spontaneous writhing movements of a hand, arm neck or face = athetosis
Pontine Nucleus
Pontine reticular nuclei
Excite antigravity (axial) muscles
Fibers make up the pontine reticulospinal tract
Reticular Nuclei
Medullary reticullar nuclei
Relax antigravity muscles
Fibers make up the medullary reticulospinal tract
Subthalmic nucleus
Couldn’t find lots of info
Part of basal nuclei
Fastglial Nucleus
Fibers project to reticular formation and vestibular nuclei
Related to posture and limb movements (without won’t be able to stand upright)
Lesion - trunk ataxia
Putamen Circuit
Cerebral cortex –> Putamen –> Globus pallidus –> Thalamic relay nuclei –> Primary motor cortex
(Bypasses caudate nucleus)
