Flashcards in Brain Deck (29)
what is the purpose of the reticular system?
-connects with cerebrum, spinal cord and cerebellum
what are common fixtures throughout the brainstem?
cranial nerve nuclei
what are the mamillary bodies?
part of the limbic system
what do the colliculi do?
assoc with vision and hearing
part of visual pathway (bulbs on posterior side of midbrain)
part of auditory pathway (bulbs on posterior side of midbrain)
what is the pineal gland located?
what is the mesencephalon?
what does pons do?
nuclei for heart rate and breathing rate
cranial nerve for 5, 6, 7 and 8
connections with the cerebellum (peduncles)
what does the medulla do?
regulates heart and breathing rate
nuclei for CN 8, 9, 10, 11, 12
nucleus gracile and nucleus cuneatus (transmits proprioception and vibration and discriminative touch)
what are parts of the cerebral white matter?
commissural tracts (connect gyrus in one hemisphere to gyrus of opposite hemisphere)
projection tracts (connect lower brain to higher centers)
what is the function of the thalamus?
major sensory relay station
what is the cortiospinal pathway
from cerebral cortex to spinal cord
what is the corticopontine pathway
from cerebral cortex to pons
what is the corticobulbar pathway
from cerebral cortex to medulla
where does the superior cerebellar peduncle extend?
from cerebellum to red nuclei
where does the middle cerebellar peduncle extend?
from pontine nuclei to cerebellum
where does the inferior cerebellar peduncle extend?
1. proprioceptors from trunk and limbs to cerebellum
2. vestibular from proprioceptors in head to cerebellum and some that go back
3. from inferior olivary nucleus to cerebellum
4. from cerebellum to reticular formation
which embryonic portion becomes the cerebrum?
which embryonic portion becomes the pons and cerebellum?
which embryonic portion becomes the medulla and spinal cord?
what dura mater layer separates cerebrum from cerebellum?
what type of CT is the dura mater?
what type of CT is arachnoid mater?
collagen and elastic fibers
what type of CT is pia mater?
delicate collage and elastic fibers
what are the main functions of CSF?
exchange of nutrients and wastes to blood
what is an infection of the spinal cord?
what is kernig's sign?
pain on flexion of legs (sign of meningitis)