Flashcards in Brain Deck (29)
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1
what is the purpose of the reticular system?
alertness
-connects with cerebrum, spinal cord and cerebellum
2
what are common fixtures throughout the brainstem?
ascending sensory
descending motor
cranial nerve nuclei
3
what are the mamillary bodies?
part of the limbic system
4
what do the colliculi do?
assoc with vision and hearing
5
superior colliculi
part of visual pathway (bulbs on posterior side of midbrain)
6
inferior colliculi
part of auditory pathway (bulbs on posterior side of midbrain)
7
what is the pineal gland located?
epithalamic
8
what is the mesencephalon?
midbrain
9
what does pons do?
nuclei for heart rate and breathing rate
cranial nerve for 5, 6, 7 and 8
connections with the cerebellum (peduncles)
10
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)
11
what are parts of the cerebral white matter?
association tracts
commissural tracts (connect gyrus in one hemisphere to gyrus of opposite hemisphere)
projection tracts (connect lower brain to higher centers)
12
what is the function of the thalamus?
major sensory relay station
13
what is the cortiospinal pathway
from cerebral cortex to spinal cord
14
what is the corticopontine pathway
from cerebral cortex to pons
15
what is the corticobulbar pathway
from cerebral cortex to medulla
16
where does the superior cerebellar peduncle extend?
from cerebellum to red nuclei
17
where does the middle cerebellar peduncle extend?
from pontine nuclei to cerebellum
18
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
19
which embryonic portion becomes the cerebrum?
telencephalon
20
which embryonic portion becomes the pons and cerebellum?
metencephalon
21
which embryonic portion becomes the medulla and spinal cord?
myelenchephalon
22
what dura mater layer separates cerebrum from cerebellum?
tentorium cerebelli
23
what type of CT is the dura mater?
dense irregular
24
what type of CT is arachnoid mater?
collagen and elastic fibers
25
what type of CT is pia mater?
delicate collage and elastic fibers
26
what are the main functions of CSF?
shock absorption
pH
transports proteins
exchange of nutrients and wastes to blood
27
what is an infection of the spinal cord?
myelitis
28
what is kernig's sign?
pain on flexion of legs (sign of meningitis)
29
