Basal Nuclei & Ventricles Flashcards
Basal nuclei are masses of ββββ in the ββββββ-?
Gray matter in the base of cerebral hemispheres
Basal nuclei are imp in the ββββ&ββββ?
Control posture & voluntary movement
TRUE OR FALSE
Basal nuclei are not connected directly to the spinal cord ?
True
( Slide 28 )
Basal nuclei include ? (3)
1- corpus striatum ( caudate & lentiform nuclei )
2- amygdaloid
3- claustrum
The head of caudate nucleus forms βββ& ββ- wall of ββ- lateral ventricle ?
Floor & lateral wall of anterior horn
The head of caudate nucleus fuses inferiorly with ββ?
Lentiform
body caudate nucleus forms ββββ of central part of ββ- ventricle ?
Floor , lateral
Tail caudate nucleus forms ?
Roof of tail of lateral ventricle
Tail of caudate nucleus continues with ββββ?
Amygdala
In between caudate & lentiform is βββ-?
Internal capsule
The parts of lentiform nucleus ?
1- putamen (large dark )
2- Globus pallidus ( small pale )
External capsule separates lentiform laterally from ββββ-?
Claustrum
Internal capsule separates lentiform medially from ββββ-?
Caudate & thalamus
Corpus striatum is ?
Caudate & lentiform with anterior limb of internal capsule in between
Caudate & lentiform are important ββββ- nuclei ?
Extrapyramidal nuclei
Clausrum site ?
Deep to insula lateral to external capsule
Amygdala site ?
Tip of inferior horn of lateral ventricles
Amygdala function?
Part of limbic system
Blood supply of basal nuclei anterior part ?
Anterior cerebral A
Blood supply of basal nuclei posterior part ?
Middle cerebral artery
Lesion of basal nuclei causes (7)?
1- movement : involuntary or slow
2- inc muscle tone
3- muscle spasm & rigidity
4- problem finding the words
5- tremors
6- uncontrolled repeated movement (tics )
7- walking difficulty
Lateral connected to 3rd ventricle by βββ- foramen?
Interventricular (monro )
Lateral connected to 3rd ventricle by βββ- foramen?
Interventricular (monro )
Lateral ventricle has 4 parts ?
1- anterior horn
2- Central (body
3- posterior horn
4- inferior horn
Anterior horn of lateral ventricle lies in ?
Frontal lobe
In front of interventricular foramen
Roof of Anterior horn of lateral ventricle ?
Corpus callosum
Anterior to Anterior horn of lateral ventricle ?
Genu of corpus callosum