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Flashcards in Brain Deck (29):
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

what is brudzinskis sign?

flexing the neck causes flexing of the hip and knee (sign of meningitis)

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