2 gross brain and spinal cord anatomy Flashcards

1
Q

what does cortical mean

A

relating to or consisting of the cerebral cortex

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2
Q

what separates the 2 hemispheres of the telencephalon

A

falx cerebri

longitudinal fissure

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3
Q

what part of the telencephalon functions to integrate motor and sensory information and serves to allow communication between the 2 hemispheres

A

corpus callosum (WHITE MATTER)

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4
Q

what is the function of the anterior and posterior paracentral gyri that surround the paracentral lobule

A

anterior: motor to contralateral lower extremity
posterior: sensory to contralateral lower extremity

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5
Q

what is the function of the cingulate gyrus? and what part of the brain is it located ?

A
  • located in the telencephalon (forebrain)

- functions in memory, learning, and limbic system

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6
Q

what type of matter is the corpus callosum

A

white matter

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7
Q

what is the function of the frontal lobe

A

personality
decision making
motor
speech

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8
Q

what makes up the primary motor cortex

A

precentral gyrus + anterior paracentral gyrus

located in the frontal lobe

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9
Q

what are the 3 parts of the inferior frontal lobe

A
  1. pars opercularis (most superior/posterior)
  2. pars triangularis
  3. pars orbitalis (most inferior/anterior)
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10
Q

what makes up broccas area

A
  • in frontal lobe, part of the inferior frontal gyrus of the dominant hemisphere (usually left)
    1. pars triangularis
    2. pars opercularis
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11
Q

what is important about the middle frontal gyrus

A

location of frontal eye fields

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12
Q

function of the parietal lobe

A

sensory and association

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13
Q

what makes up wernickes area

A

*in inferior parietal lobe/ left temporal lobe
[1 and 2 in inferior parietal lobule; 3 in temporal lobe]
1. supramarginal gyrus (around the lateral fissure)
2. angular gyrus (around the superior temporal sulcus)
3. superior temporal gyrus (parts of)

*posterior superior temporal gyrus

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14
Q

function of the temporal lobe

A
  1. processing/interpreting of initial auditory stimuli
  2. memory
  3. organizing/comprehending language
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15
Q

what makes up the primary auditory cortex

A
  • the superior temporal gyrus and transverse temporal gyrus
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16
Q

function of the occipital lobe

A

integrate/process visual stimuli

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17
Q

what makes the primary visual cortex

A
  • *gyri around the calcimine sulcus
    1. cuneus gyrus
    2. lingual gyrus

*on occipital lobe

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18
Q

function of the insular lobe

A

unclear

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19
Q

parts of the basal ganglia

A
  1. caudate nucleus
  2. globus pallidus (medial)
  3. putamen (lateral)
  4. thalamus
  5. internal capsule
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20
Q

what space is between the thalami of the 2 hemispheres

A

3rd ventricle

21
Q

which pituitary gland is considered part of the dicephalon

A

posterior pituitary

22
Q

posterior commissure separates what 2 structures

A

pineal gland

superior colliculus

23
Q

function of the mammillary bodies

A

recollective memory

24
Q

where does CN 3 (oculomotor) exit specifically

A

-interpeduncular fossa between the cerebral peduncles of the mesencephalon (mid brain)

25
Q

what part of the brain is the medial and lateral geniculate bodies apart of

A

diencephalon

26
Q

what is the function of the superior and inferior colliculus on the posterior mescenphalon (superior brainstem)

A

superior: receives visual information from the lateral geniculate body
inferior: sends auditory information to the medial geniculate body (part of ascending auditory path)

27
Q

what ventricle is located about the rhomboid fossa

A

4th ventricle

28
Q

what separates the pons and medullary parts of the rhomboid fossa

A

the stria medullaris acoustica

29
Q

what separates the facial colliculus and the vestibular area of the rhomboid fossa

A

the sulcus limitans

30
Q

what is the 2 parts of the pons

A
  1. basilar pons (more anterior; has descending cortical tracts)
  2. tegmentum pons (more posterior)
31
Q

Where does cortical spinal tracts split into anterior and lateral parts

A

at the pyramidal decussation (oblique crossing of the tracts on the pyramids)

32
Q

where does the rhomboid fossa come together inferiorly on the posterior aspect

A

obex

33
Q

function of the tubercular cuneatous

A
ascending tract (sensory) for proprioceptive and tactile information of the contralateral upper extremity 
(sends info to the CNS)
34
Q

what is responsible for motor learning

A

inferior olivary nuclear complex

35
Q

where do you do a lumbar puncture

A

b/t: L3/L4

or L4/L5

36
Q

where does the spinal cord begin

A

foramen magnum

37
Q

spinal cord is attached laterally by _____ and causally by ____

A

lateral - denticulate Ligaments (pia matter than connect SC to lateral dura matter)

caudal- filum terminale (internum @ S2 and externum @ coccyx)

38
Q

after the spinal cord ends it becomes

A

spinal cord–> conus medullaris –> cauda equina

39
Q

where does the fasiculus cuneatus start? where on the spinal cord is it? what does it do? and what separates it from the gracilis in the spinal cord?

A

starts at T6
lateral part of the posterior funiculus of white matter
upper extremity
separated by the posterior intermediate sulcus (which also starts at T6 and only seen in upper thoracic and cervical spinal cord)

*fasiculus gracilis ascends from lumbar and does LE

40
Q

where do dorsal (sensory) roots enter the spinal cord

A

posterolateral sulcus

41
Q

what is located in the anterior median fissure of the spinal cord ? what’s its function?

A

anterior spinal artery that supplies the anterior 2/3 of the spinal cord

42
Q

in the spinal cord, white matter is separated into ___ and gray matter is separated into ___

A

white- funiculus (anterior, lateral, posterior)

gray- horns (anterior, posterior, intermediate zone connection)

43
Q

what part of the spinal cord holds the spinal thalamic tract and the anterolateral system

A

lateral funiculus (white matter)

44
Q

where are preganglionic SNS neurons located in the spinal cord

A

thoracic
-lateral horn
(protrusion of the lateral funiculus)

45
Q

posterior horn as what lamina ? anterior? intermediate?

A

posterior: lamina 1-6
intermediate: 7
anterior: 8-9

*10 in center

46
Q

what nuclei are associated with lamina located in the posterior horn

A

1- marginal zone
2- substantia gelatinous
3-6: body of posterior horn

47
Q

what nuclei are associated with the lamina located in the intermediate horn

A

7- clark nucleus
7- interomedial column
7- sacral parasympathetic nucleus

48
Q

what nuclei are associated with the lamina located in the anterior horn

A

9- accessory nucleus

9- phrenic nucleus